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Senior Software Engineer Full Stack - Ruby on Rails, React Up to £120k DOE Fully Remote - must be UK based A fast-growing sports tech company building high-performance, data-driven products for a rapidly expanding global audience is searching for a Senior Full Stack Engineer. This is a pivotal role for an experienced engineer who thrives on shaping architecture, driving technical direction, and still remaining hands-on in the codebase. As a technical leader within a cross-functional Product Team, you’ll influence the long-term engineering strategy, guide architectural decisions, and ensure the platform scales reliably as our user base grows. You’ll act as a role model for engineering excellence - mentoring others, elevating standards, and collaborating closely with Product, Design, and Customer Success to build tools our customers truly value. Tech Stack: Ruby on Rails, React, React Native, GraphQL What You’ll Be Leading & Doing • Drive architectural design, long-term technical vision, and scalable system patterns, • Lead complex fullstack development across Rails and React/React Native, • Own technical quality - setting engineering standards, reviewing code, and ensuring maintainability, • Guide the team through key scaling challenges across performance, reliability, and modularity, • Mentor and coach engineers, fostering a culture of learning and high performance, • Work closely with stakeholders and users to translate real-world needs into elegant, robust solutions, • Influence and improve engineering practices, tooling, CI/CD, and operational excellence, • Remain hands-on, contributing significant code while unblocking and supporting the team What We’re Looking For • Extensive experience with Ruby on Rails or similar backend frameworks at scale, • Strong expertise with React and/or React Native, • Experience designing scalable architectures, APIs, and distributed systems, • GraphQL knowledge – highly beneficial, • Excellent communication and leadership skills; able to influence without ego, • Proven ability to guide teams, mentor others, and drive engineering quality, • Someone proactive, independent, and comfortable making high-impact technical decisions, • Thrives in a fast-paced, product-driven environment and enjoys working closely with customers We’re proud to be an equal opportunities employer and encourage applications from all backgrounds.

Senior Software Engineer (Full-stack) - Permanent | On-Site | London Join a rapidly scaling US-backed startup at a pivotal moment. With significant funding secured and strong momentum, they are establishing their UK presence and offering exceptional equity opportunities for early team members. As a Senior Software Engineer, you'll work across our Python and TypeScript stack, contributing wherever the team needs you most. What You'll Be Doing: • Develop and maintain FastAPI (Python) and Next.js (TypeScript) applications., • Own features end-to-end - from user interface through to infrastructure and internal tooling., • Navigate and contribute to diverse codebases across the platform., • Shape product direction and architectural decisions., • Work alongside engineers and AI specialists in a cross-functional environment., • Grow your expertise while sharing knowledge with the team. What We're Looking For: • Growth mindset - You're intentional about self-improvement and continuous learning, • Deep expertise - You've mastered something technical; the specific domain matters less than the depth of skill, • Comfort with ambiguity - You thrive on open-ended challenges and unstructured problems, • Code fluency - You can dive into complex systems and make impactful contributions quickly, • Technical foundation - Strong skills in Python, TypeScript, or both (or genuine enthusiasm to learn), • Collaboration style - You work well with others but are equally effective independently Nice to Have: • Experience with modern frontend frameworks (React, etc), • Background in API development or distributed systems For more information, please apply! *Please note that this role will not be able to provide sponsorship support. Research shows that candidates from underrepresented groups often wait until they meet nearly all requirements before applying, while others apply when meeting just 50-60%. If this role excites you and you meet many—but not all—of these criteria, we still want to hear from you. We actively encourage applications from underrepresented talent and are committed to supporting accessibility needs throughout our hiring process.

This role sits within a high-performing engineering group responsible for building and supporting the core systems that underpin real-time trading activity. The successful candidate will work across the full software development lifecycle, contributing to the design, build, deployment, and optimisation of highly scalable, performance-critical applications. Key Responsibilities • Build, test, and enhance high-performance trading systems using C++ and Python, • Translate quantitative models and trading logic into robust production-ready software, • Develop internal tools and interfaces used directly by front-office trading teams, • Improve market data ingestion, exchange connectivity, and real-time data flows, • Contribute to distributed systems, low-latency communication, and performance tuning initiatives, • Take part in design discussions, code reviews, profiling, and CI/CD improvements, • Gain hands-on exposure to algorithmic trading infrastructure, market structure, and risk platforms Candidate Profile • Early-career experience demonstrated through internships, placements, or academic projects (0–2 years), • Bachelor’s or Master’s degree in Mathematics, Physics, Engineering, or a related discipline (graduating between December 2025 and June 2026), • Strong programming capability in C++ and Python, • Solid foundations in data structures, algorithms, and operating systems, • Comfortable working in Linux/Unix environments, • A strong focus on writing clean, efficient, and maintainable code, • Excellent analytical thinking and problem-solving ability, • Clear communicator with the ability to collaborate effectively in team environments, • Genuine interest in financial markets (prior finance experience not required) Desirable Experience • Exposure to distributed systems, concurrency, or network programming, • Experience working with low-latency or real-time systems, • Familiarity with trading platforms, data pipelines, or simulation tools, • Open-source contributions or personal technical projects that demonstrate initiative Contact Ciara Clarke at Harrington Starr for a confidential discussion.

Software Engineer – High-Performance Computing & Quant Tech HMx Labs – London (Hybrid), Permanent, ~£70k + benefits HMx Labs is a boutique consultancy focused on the messy, interesting intersection of high-performance computing, cloud, and quantitative finance. We help banks, hedge funds, and vendors design, build, and debug serious compute platforms – from CPU/GPU clusters for risk calculations to low-latency analytics and large-scale simulations. We’re hiring a Software Engineer to work in the HPC side of the company. One day you might be talking to finance quants about risk workloads, the next you’re deep in conversation with GPU engineers about kernels, memory layouts and performance – and plenty in between. More than a perfect CV, we care that you’re smart, highly motivated, and that you actually care about HPC (and maybe finance too). You should enjoy understanding how systems behave at a low level and be happy jumping between domains. You must have • The right to live and work in the UK indefinitely, • At least 1 year of experience as a software engineer in paid full-time employment, • Knowledge and commercial experience with at least one of, Java, C# or Python, • Experience with at least one non-managed / manual-memory language, e.g. C, C++, Rust. Experience working in financial services technology (risk, trading, analytics, etc.) Nice to have but not deal-breakers: • Experience with distributed systems, job schedulers, or batch frameworks, • Working with GPUs (CUDA, ROCm, or similar), • Familiarity with numerical methods, Monte Carlo, or risk systems, • Prior consultancy or client-facing experience About HMx Labs We’re a small, specialist shop, not a giant body-shop. That means: • You’ll have real ownership and direct impact on client work, • You’ll see a wide range of interesting HPC and quant problems, not the same ticket farm every day, • You’ll work closely with people who actually care about performance, correctness and cost – not just buzzwords Anyone applying with a recommendation from someone who has worked with HMx Labs goes to the top of the pile. Location, salary & working style • Role: Permanent, full-time, • Location: London-based, hybrid (some time in the office / with clients is expected), • Salary: Around £70k + benefits, depending on experience How to apply (and one important request) I’ll make the same offer as last time: I won’t use AI to filter or assess candidates if you don’t send me AI-generated applications or apply without thought. Deal? That means I will actually read your application, but in return: • Don’t send an obviously AI-generated CV or cover letter, • Your CV, • A short note explaining your experience with either HPC or financial services tech (or both)

Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity Company: I'm looking for Full Stack Engineers who are excited about elegant systems as they are about real-world impact. Their mission is to reduce carbon emissions in the UK building a razor sharp platform for heat pumps to be installed in homes up and down the Country. You'll join a lean, talented team of engineers and work directly on tools that accelerate the energy transition — like: -> Automated design tools for heat pump systems -> A survey app for collecting property data on-site -> 2D/3D floorplan creators (maybe even with LiDAR and CV!) -> Country-wide data tools through large-scale scraping + mapping -> Hardware integrations (e.g. bluetooth laser measures, sensors) -> Offline-first/PWA apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL / PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Requirements for Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity -> 2+ years commercial experience -> STEM Background -> React + TypeScript (you’re confident building fast, dynamic UIs) -> SQL and relational database design -> RESTful APIs and distributed systems -> Scalable and secure architectures -> Owning features end-to-end, from shaping the product idea to shipping the code. Type of engineer for Carbon Emission/Green Tech Start-Up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity ->You’re product-minded — you care about the user and the why behind every line of code. ->You’re impact-driven — you want to move fast and make a real dent in the climate crisis. ->You’re collaborative — you're excited to work closely with a tight-knit, in-person team. ->You’re into sustainable tech, heat pumps, or building a greener future. Remuneration & Benefits -> £50,000 - £110,000 + meaningful equity -> 33 days holiday + work abroad up to 30 days/year -> Hybrid working between London & Bristol studios -> Work closely with a brilliant, mission-led team If you want to hear more about the Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity please apply ASAP with a CV and we will give you a call if we think you are a match! 😊

About Us: We are one of the world’s leading commodities trading houses, leveraging sophisticated technology to trade a broad range of energy, metals, and agricultural commodities globally. Our success is driven by cutting-edge analytics, high-frequency data processing, and a commitment to innovation. We are now looking for a Senior Python Engineer to join our dynamic team in London and drive our next wave of technological advancements. Role Overview: As a Senior Python Engineer, you will be at the heart of our technology platform, building robust systems that enhance our trading strategies, risk management, and data analysis. You will collaborate closely with quants, data scientists, and traders, providing Python-based solutions that directly impact the profitability of the business. This is an exciting opportunity to work in a fast-paced, high-performance environment where you can push the boundaries of technology in financial markets. Key Responsibilities: • Design, develop, and maintain highly efficient Python-based applications for commodities trading, risk management, and real-time data analysis., • Build scalable, high-performance data pipelines to process large datasets from multiple sources, including real-time market data and fundamental data., • Implement robust APIs and microservices to integrate trading systems, analytics platforms, and external data providers., • Optimize performance and scalability of existing systems, ensuring low-latency trade execution and real-time risk monitoring., • Collaborate with quants and traders to prototype and implement algorithms that enhance trading strategies and position management., • Lead code reviews, enforce best practices, and mentor junior developers to foster a culture of excellence., • Work in a collaborative, agile team environment to rapidly develop and iterate on new features and tools. Qualifications: • 5+ years of professional experience in Python development, with a focus on building performant, scalable systems., • Deep understanding of core Python, including its strengths in data manipulation, asynchronous programming, and performance optimization., • Experience with distributed systems, parallel computing, and high-performance processing of large datasets., • Strong experience in data pipelines, working with tools such as Pandas, NumPy, and SQL/NoSQL databases., • Proven experience working in fast-paced environments, ideally within trading, financial services, or high-frequency environments., • Proficiency in developing RESTful APIs, microservices, and working with cloud-based architectures (AWS, GCP, or similar)., • Expertise in testing frameworks, CI/CD, and containerization technologies such as Docker or Kubernetes., • Experience in managing and deploying services in Linux/Unix environments., • Strong analytical and problem-solving skills, with a keen attention to detail and an ability to thrive under pressure., • Fluency in English is required. Preferred Skills: • Experience in commodities markets or broader financial markets., • Knowledge of quantitative modeling, risk management, or algorithmic trading., • Familiarity with big data technologies like Kafka, Hadoop, Spark, or similar. Why Work With Us? • Impactful Work: Directly influence the profitability of the business by building technology that drives trading decisions., • Innovative Culture: Be part of a culture that embraces new ideas, cutting-edge tools, and continuous improvement., • Competitive Compensation: Industry-leading salary, significant performance-based bonuses, and comprehensive benefits package., • Professional Development: Access to world-class learning and development resources, with opportunities for career growth., • Work-Life Balance: Flexible working arrangements, generous holiday allowances, and a strong focus on well-being.

Role: Distributed Systems Software Engineer - Up to £190k + Bonus Salary: Up to £190k + Bonus Location: London (Hybrid) Skills: Language agnostic, just need to be a keen technologist (Ideally experienced in Rust, Python or C++) This firm is an elite company with high tech standards who have previously set tech world records. They are made up of some exceptionally talented individuals who above all are passionate about using the latest and greatest tech and pushing it to the limits. They’ll find the best team to suit your skillset/interests but you could be working on: • Designing and developing scalable, tested and production grade distributed systems, • R&D work for functional programming; either pre-existing languages (such as Rust and Erlang), or purpose-built languages similar to OCaml, • Building out Machine Learning Infrastructure and tweaking research models What else is in it for you? • Software Engineers are treated as the company's #1 asset, • Low attrition rate; people working there love what they do on a daily basis!, • Very friendly, tight-knit environment, • Flat structure, with a clear progression route

About Us: We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience. Role: We’re looking for an experienced Full Stack Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define in-store shopping. You'll help help build engaging & intuitive web experiences and the event-driven & real-time backend services that power them. You’ll work across the stack, implementing highly responsive UI components and real-time data flows and APIs on a backend designed for scale & flexibility. Responsibilities: • Design and implement reactive, real-time web interfaces that help manage & redefine what is possible with in-store content personalisation, • Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources., • Build and document APIs (OpenAPI/AsyncAPI) for mobile and web clients, • Model and manage structured and semi-structured data across storage layers, • Integrate AI-driven personalisation and real-time insights into user flows, • Contribute to overall system design: service boundaries, data ownership, scaling, and observability Essential Qualifications: • Built modern full-stack applications (Python/Java/Go + React), • Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object), • Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE), • Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar), • Experience with container orchestration and service containerisation (Kubernetes, Docker), • Built and deployed services on any major cloud providers' services (Azure, GCP, AWS), • Worked with AI development tools (eg. Bolt, Lovable, Cursor) to speed up iteration & prototyping Nice to Have: • Worked with real-time data collection and/or processing, • Worked in an IoT or Edge-oriented architectures, • Experience or knowledge in retail POS, inventory, or loyalty systems

This role is with one of Dex’s trusted Partner companies. We work closely with their teams to truly understand their culture, goals, and what they’re looking for, so we can match you with the right opportunity for your goals! If you’re interested, apply here, or head over to Dex to find other opportunities with top tech companies, where you can truly find work that matters! The Opportunity Dex is partnering with a rapidly growing Series B company that is fundamentally redefining the CRM landscape for the AI era. Backed by Tier-1 global investors (the same behind Uber, Stripe, and Slack), they are building a "real-time first" platform that combines the power of a database with the usability of consumer social apps. This is a role for an Engineering Lead who refuses to compromise on quality, joining a team that obsesses over real-time infrastructure, massive data synchronization, and an interface that feels instant. What You’ll Work On • Lead a High-Performance Team: Balance hands-on individual contribution with the leadership of a focused, elite team of engineers. You will set the tempo, technical standards, and culture., • Architect for Scale: Design and evolve complex, event-driven architectures capable of handling massive data throughput and real-time synchronization across millions of entities., • Bridge Product & Engineering: Operate with high autonomy, making critical product decisions based on direct customer feedback and translating them into technical reality., • Build the Team: Play a pivotal role in recruiting and developing world-class engineering talent, fostering an environment of rigorous thinking and rapid execution., • Drive End-to-End Delivery: Own the full lifecycle of critical features What You'll Have • Technical, Hands On Experience: Deep, demonstrable expertise in modern cloud architectures and the full web stack. You are most comfortable in TypeScript/Node.js or Go on the backend, and/or React on the frontend., • System Design: Proven experience designing secure, scalable, and reliable backend systems on GCP or AWS. You understand the nuances of distributed systems and real-time data., • Leadership DNA: You have a track record of not just writing code, but growing great engineers. You know how to influence technical decisions and unblock your team., • Product Fluency: You don't wait for a spec sheet. You understand the business context and communicate technical trade-offs to stakeholders clearly., • Rigorous Thinking: You thrive on complex problems. You care about the "why" behind the architecture and strive for elegance in complexity., • Ambition: You want to work at the bleeding edge of the AI-native shift, building tools that define how the next generation of go-to-market teams operate. To be considered for this role and others like it, apply directly, or sign up to Dex to find other opportunities for work you're actually excited by!

AI Startup - Backend Python Engineer A pair of second time founders who have already built and exited successful ventures are assembling a new elite engineering team for their next AI startup! They have secured top tier backing (8 figures!), built early traction with thousands of users and are now searching for exceptional Founding Backend Engineers to scale a deeply ambitious product at breakneck speed. This is a ground floor opportunity to own the backend systems that could redefine how people interact with AI every day! 💡 The Role • Build core backend services, APIs and distributed systems in Python, • Design architecture, data flows and infrastructure foundations from day zero, • Work directly with the founders on product strategy and technical direction, • Move fast in an iterative environment while maintaining high engineering quality, • Shape backend engineering culture, tooling and processes for a rapidly scaling product 🛠️ Tech Environment • Python with FastAPI, • PostgreSQL, • Event driven backend services and data heavy workflows, • Modern AI frameworks and agent driven systems integrated into backend pipelines, • Engineers who love solving performance, scaling and reliability challenges 🥷 What You Need • 5+ years experience in high growth early stage startups, • BSc or MSc from a highly ranked university (Oxford Cambridge Imperial UCL, or similar), • A desire to work in a fast paced startup that pushes technical and product limits 💸 What’s on Offer • Very competitive salary (top of market) + meaningful equity, • Work directly with two founders who have built and exited successful ventures, • Huge ownership over backend architecture infrastructure and technical direction, • Build a category defining AI platform with the potential for global scale, • Join a small elite engineering team moving at exceptional speed If you want to join a high velocity AI venture at the earliest stage and help build something truly transformative let’s talk!

Senior DevOps Engineer London (Hybrid: 2–3 days onsite) £500-£520 per day | Outside IR35 | 6-month contract Contact: Overview We are seeking a Lead DevOps Engineer to support mission-critical platforms in the financial risk and compliance space. This is a hands-on role focused on CI/CD, deployment automation, and Kubernetes-based infrastructure supporting highly reliable, scalable services. You will work closely with engineering and QA teams to ensure efficient, compliant, and traceable delivery across multiple environments. Key Responsibilities • Lead and optimise CI/CD pipelines to improve deployment speed, reliability, and consistency., • Automate deployments and environment configuration using infrastructure-as-code (e.g. Terraform)., • Embed deployment best practices across development and QA workflows., • Support production handover, incident triage, and defect prioritisation., • Promote resilient, self-healing microservices and strong operational practices., • Manage stakeholder communication and track delivery risks and dependencies., • Maintain a strong understanding of end-to-end architecture and system integrations. Required Experience • Strong background in DevOps practices, tooling, and automation., • Proven experience leading DevOps initiatives across development and operations teams., • Hands-on experience with Kubernetes, Linux/Unix, and containerised systems., • Experience building and operating deployment pipelines and debugging distributed systems., • Knowledge of relational databases (SQL) and NoSQL technologies., • Familiarity with modern architectures including containers, APIs, and streaming platforms., • Experience working in Agile environments and using Git with established branching strategies., • Ability to produce clear operational documentation (e.g. runbooks).

🚀 About Ten-Xer At Ten-Xer, we match people to roles where they can actually build and grow. We partner with startups that want operators, not passengers, and help them hire talent who move fast and deliver outcomes. About Crimson Crimson is an AI productivity platform built for litigators. Litigation teams use Crimson to analyze case files, answer case-specific questions and draft documents tailored to each dispute. By automating manual workflows across the life cycle of a case, Crimson helps lawyers find key evidence faster, streamline case management and save 10+ hours per week on common litigation tasks. Crimson is a small, high-ownership team of three co-founders building a category-defining AI platform for high-stakes litigation. They work with major UK and US law firms on highly sensitive case files. The culture is product-driven and security-obsessed: engineers talk directly to users, own features end-to-end, and care deeply about accuracy, reliability and speed. YC-backed and focused on shipping quickly while learning from demanding users. 🧩 What You'll Do • Build core product features across the stack from cloud infrastructure to prompting to UX, including Python backend, Next.js with TypeScript frontend, PostgreSQL, and Azure-hosted LLM workloads with CI/CD pipelines via GitHub Actions and IaC such as Bicep, • Work directly with litigators and knowledge workers to understand how lawyers work, what they need, and how Crimson can fit into their workflows, • Architect and scale document ingestion and processing pipelines to power fast, accurate search, summarization and data extraction over large volumes of legal documents, • Design and implement intelligent, multi-step agent workflows that autonomously handle complex legal tasks from surfacing key testimony to generating fact chronologies and spotting inconsistencies in filings, • Design and ship intuitive, AI-native user experiences tailored to litigation workflows in partnership with founders and early customers, • Improve system performance, stability and observability as the platform scales to more cases, larger datasets and additional firms, • Shape engineering culture and team standards from best practices and code quality to interviewing, hiring, and mentoring future engineers ⚡ What You Bring • 3+ years building and shipping production web applications full-stack, ideally in startups or small, high-ownership teams, • Strong backend experience with Python or similar, PostgreSQL, and cloud infrastructure with Azure preferred but AWS or GCP also relevant, • Frontend experience with modern TypeScript frameworks like Next.js or React, and an eye for building clean, intuitive product experiences, • Experience designing and operating data pipelines or distributed systems that handle large volumes of text or documents, • Comfort working with LLMs and applied AI including prompting, integrating model APIs, and thinking carefully about correctness, reliability and UX for AI-powered features, • Excellent product judgment, communication skills and attention to detail with comfort talking to demanding users and turning their feedback into shipped features, • High agency and bias for shipping with a preference for owning problems end-to-end and seeing your work used in real cases, • Bonus: interest or background in legal tech, disputes, or working with professional services users 📌 Why this role matters You'll be building tools that change how some of the most critical legal disputes get resolved. Your work will directly impact case outcomes, billable efficiency and how litigation teams operate under pressure. You'll have equity, direct access to founders and users, and the chance to define what AI tooling for law should actually look like.

Join a Tier 1 Investment bank in their leading global FX trading platform as a Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration management, and support for quantitative research and trading teams. Key Responsibilities: • Develop scalable backend systems to support high-frequency FX trading, • Collaborate with quants and traders to deliver platform enhancements, • Drive performance tuning and solve low-level technical bottlenecks, • Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: • Strong proficiency in core Java, • Exposure to JavaScript/TypeScript & HTML5 is a plus, • Deep understanding of data structures, algorithms, and performance optimization, • Familiar with modern SDLC tools and CI/CD workflows Competitive compensation package and a flexible hybrid working model.

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high-performance, scalable software for real-world, high-traffic systems. About the Role You’ll join a permanent feature team, taking end-to-end ownership of services, from design and development to testing, deployment, and optimisation. Your focus will be on building robust microservices that support high-traffic user experiences, serving thousands or millions of concurrent users. What We’re Looking For • Proven experience developing Java microservices for high-traffic applications (retail, e-commerce, media, or streaming platforms)., • Hands-on experience with the full software lifecycle in agile environments and CI/CD pipelines., • Strong understanding of performance, scalability, security, and observability in distributed systems., • Ability to translate complex requirements into resilient, production-ready software., • Excellent collaboration and communication skills. Why This Role This is your chance to work with a leading bank while applying your expertise in high-traffic, consumer-facing microservices and shape platform-level solutions outside traditional financial systems. Contact Harry – Paritas Recruitment Email: Mobile: +44 7702 946 250

Humanoid is the first AI and robotics company in the UK, creating the world’s most advanced, reliable, commercially scalable, and safe humanoid robots. Our first humanoid robot HMND 01 is a next-gen labour automation unit, providing highly efficient services across various use cases, starting with industrial applications. Our Mission At Humanoid we strive to create the world’s leading, commercially scalable, safe, and advanced humanoid robots that seamlessly integrate into daily life and amplify human capacity. Vision In a world where artificial intelligence opens up new horizons, our faith in its potential unveils a new outlook where, together, humans and machines build a new future filled with knowledge, inspiration, and incredible discoveries. The development of a functional humanoid robot underpins an era of abundance and well-being where poverty will disappear, and people will be able to choose what they want to do. We believe that providing a universal basic income will eventually be a true evolution of our civilization. Solution As the demands on our built environment rise, labour shortages loom. With the world’s workforce increasingly moving away from undesirable tasks, the manufacturing, construction, and logistics industries critical to our daily lives are left exposed. By deploying our general-purpose humanoid robots in environments deemed hazardous or monotonous, we envision a future where human well-being is safeguarded while closing the gaps in critical global labour needs. About The Role We are looking for a Senior/Staff Software Engineer (Data) to help transform our rapidly growing universe of raw robotic data into a dependable, scalable foundation for learning, simulation, and system performance. You will be part of a specialised team responsible for designing and maintaining the data pipelines that connect control, perception, simulation, and learning systems. This role involves close collaboration with robotics engineers, machine learning researchers, and software developers. You will own critical aspects of our data platform, shape data models and schema design, implement quality controls, and optimise systems for high-throughput and reliable processing. It’s ideally suited to someone passionate about building foundational systems at the intersection of AI and robotics, who enjoys solving practical challenges and working across disciplines to turn complexity into clarity. What You’ll Do • Develop the backbone of our HMND robot Capability Factory., • Curate, preprocess, and manage large-scale datasets for humanoid robot training—projected to grow to petabytes by 2026., • Build highly scalable data pipelines on massive infrastructure tens of thousands of vCPUs., • Ensure the quality, accuracy, and consistency of data across multiple projects., • Collaborate with machine learning teams to design data pipelines that support efficient training workflows., • Develop and maintain data quality metrics reporting systems., • Implement best practices for data management, including versioning, security, and compliance. We’re Looking For • Bachelor’s or Master’s degree in Data Science, Computer Science, or a related field., • 5+ years of experience in data engineering and data quality., • Strong proficiency in one the programming languages, such as Python, Java, Scala, C++, etc., • Experience with distributed computing frameworks such as Ray, Spark, and MapReduce., • Attention to detail and a strong commitment to data integrity., • Excellent problem-solving skills and ability to work in a fast-paced environment. Nice To Have • Experience developing infrastructure for petabyte-scale data platforms., • Deep, hands-on expertise in low-level and system-level engineering, including operating systems, networking, and large-scale infrastructure internals., • Understanding of ML requirements and experience working with ML teams., • Experience with DBT, Prefect, and Databricks., • Familiarity with robotics or the self-driving field., • Experience with cloud-based data storage and processing solutions. AWS would be a plus., • Passion for contributing to the development of advanced humanoid robots. Benefits • Competitive salary plus participation in our Stock Option Plan, • Paid vacation and travel opportunities to our London, Vancouver, and Boston offices, • Office perks: free breakfasts, lunches, snacks, and regular team events, • Freedom to influence the product and own key initiatives, • Collaboration with top‑tier engineers, researchers, and product experts in AI and robotics, • Startup culture prioritising speed, transparency, and minimal bureaucracy

At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you’re ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you’re ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. THE WORK The XRP Ledger (XRPL) is a decentralized, public blockchain led by a global community of businesses and developers focused on solving problems and bringing value. Proven reliable over more than a decade of operation and closing over 100 million ledgers, the XRPL offers streamlined development, low transaction costs, high performance, and sustainability. As a Software Engineer Intern in the Core Ledger team, you will help us maintain this high technical bar, while building innovative solutions to ensure the XRPL can power the growing needs of the global digital economy. With support from your team, access to learning and development resources, and opportunities for fun along the way, our program will give you the foundation to start your career. WHAT YOU'LL DO • Increase the capabilities, performance, scalability, and reliability of the XRPL., • Participate in the full software development lifecycle, including architecture, design, development, bug fixing, as well as functional and performance validations., • Engage with the open-source XRP ledger community, promoting quality in coding, testing, and deployment., • Actively participate in code reviews to maintain the quality of our codebase.WHAT YOU'LL BRING, • Currently enrolled in an Undergraduate, Graduate or an equivalent degree, preferably in Software Engineering, Computer Science, Mathematics, or a related field., • Available to work for 12 weeks during Summer 2026, beginning in May or June., • Intent to return to the degree-program after completing the internship., • 3+ years of hands-on software development experience using C++., • Strong interest or foundational experience in backend systems development, preferably distributed systems, concurrency and multithreading., • Passion for blockchain technology and its potential benefits., • Ability to learn new technologies and languages quickly. Do Your Best Work • The opportunity to build in a fast-paced start-up environment with experienced industry leaders, • A learning environment where you can dive deep into the latest technologies and make an impact. A professional development budget to support other modes of learning., • Thrive in an environment where no matter what race, ethnicity, gender, origin, or culture they identify with, every employee is a respected, valued, and empowered part of the team., • In-office collaboration for moments that matter is important to our culture, and we give managers and teams the flexibility to decide which 10+ days a month they come in., • Bi-weekly all-company meeting - business updates and ask me anything style discussion with our Leadership Team, • Competitive salary, bonuses, and equity, • Competitive benefits that cover physical and mental healthcare, retirement, family forming, and family support, • Employee giving match, • R&R days so you can rest and recharge, • Generous wellness reimbursement and weekly onsite & virtual programming, • Generous vacation policy - work with your manager to take time off when you need it, • Industry-leading parental leave policies. Family planning benefits.

Senior Software Engineer London – 1 day a week onsite Are you a highly experienced individual contributor looking for a step up into a senior position in a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for some of the world’s largest Banks. We’re hiring on behalf of a leading payments consultancy, delivering cutting-edge solutions that integrate seamlessly with bank infrastructure to enable real-time, secure transactions across the globe. What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies, whilst working closely with some of the largest banks across Europe. • Design and build scalable, high-availability systems processing millions of real-time transactions, • Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more, • Write clean, testable code using TDD and BDD, • Contribute to architectural decisions in a fast-evolving codebase, • Collaborate within Agile teams (Kanban/Scrum) What You Bring We’re looking for Engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. • Strong hands-on experience with Java 11+ (ideally Java 17), • Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA), • Experience with event-driven architecture, real-time messaging systems (Kafka, JMS), • Familiarity with asynchronous request handling, scalability, and system resilience, • Agile mindset, with TDD/BDD and CI/CD experience Bonus: Background in Banking/Payments is helpful but not required – if you’ve built high-performance, real-time systems, we want to talk to you. What’s In It for You • 💰 £95,000 – £115,000 base salary (DOE), • 🎯 20% bonus, • 🧠 Work with cutting-edge tech on globally impactful systems, • 🏡 Hybrid working – 1 day a week (or more if you’d like!), • 🌍 Opportunity to collaborate with major global banks, • 🚀 Fast-paced, product-led environment where your voice matters If you're a motivated Senior Software Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us.

About the Team: You'll be joining the team leading Entrust's Identity portfolio, formerly known as Onfido (an AI- powered digital identity solution). Our technology helps businesses verify real identities using machine learning, ensuring secure remote customer onboarding. By assessing government- issued identity documents and facial biometrics using state-of-the-art machine learning, we provide companies with the assurance they need to operate securely while allowing people to access services quickly and safely. Our Applied Scientist team consists of about twenty machine learning scientists. The team is supported by an ML Ops team that provides state-of-the-art tooling (including AWS, Encord, Ray, PyTorch Lightning and Weights & Biases). The Applied Science team works closely with product engineering to deploy models to serve our worldwide customer base. Position Overview: We are looking for an Applied Scientist II to design and train cutting-edge machine learning solutions related to digital identities. Join our team and work on challenging problems in deepfake detection, bias mitigation, document understanding, anomaly detection and/or efficient ML. What you will be doing: • Push the frontier of research in areas such as deepfake detection, bias mitigation, fraud/anomaly detection, face matching, document understanding, and efficient on-device ML., • Publish research results in national and international conferences and scientific journals. Work with product and engineering to improve our world-class identity-focused products. Representative work: • Implement bias-mitigation strategies to build fair face-matching and deepfake-detection models., • Train and benchmark large-scale vision-language models for document extraction., • Train a multi-modal document understanding model from scratch using synthetic data., • Optimise LoRA adapter latency in PEFT/Triton., • Profile, debug and improve model training speed on multiple GPUs., • Create a large-scale dataset for deepfake detection., • Experiment with multimodal models to detect fraud. You may be a good fit if you: • Have strong experience in machine learning and computer vision., • Have a strong record of successfully delivering high-performance ML-driven products., • Have a deep understanding of machine learning theory., • Have strong coding skills in Python and PyTorch., • Care about building fair and cutting-edge machine learning products. Strong candidates may also have: • Technical experience in one or more of the following areas: face matching, bias mitigation, anomaly detection, document understanding or on-device ML., • Published at top-level machine learning conferences. Experience optimising (distributed) training code. Where you will be: This role is based in our London, UK office and follows a hybrid model, requiring in-office presence three days per week. Benefits UK • 25 days annual leave plus a day off for your Birthday., • Two paid volunteering days per year.*, • Bupa Private Medical and Dental Insurance*, • Pension with The People’s Pension (employer contribution 4% of base salary)*, • Generous paid parental leave, • Life enrichment allowance of up to £80 per month to use for services including gym, yoga, fitness classes, massages, childcare, and therapy, • Dedicated learning opportunities including using tools like Linkedin Learning with availability to use for learning resources such as books, coaches, conferences, courses, podcasts, and more, • Our open and transparent culture is reflected in our “Better Together” motto and we bring this to life by meeting once a week for our global weekly roundup (OnThursday); holding quarterly team socials, and other company-wide social events, • Expense up to £300 (or local equivalent) to purchase workstation setup equipment, • The opportunity to become a member of Entrust’s resource groups in order to learn different skills in our belonging groups Ready to Make an Impact? If youʼre excited by the prospect of working on cutting-edge machine learning for problems that matter, Entrust is the place for you. Join us in making a difference. Letʼs build a more secure world—together. Apply today! NO AGENCIES, NO RELOCATION #LI-GR1 #ENT123

Chief Technology Officer / VP Engineering Salary: $150 000 - $180 0000 + Equity Location: Remote We’re partnering with a regulated institutional digital asset platform that is redefining how institutions access secure, risk-adjusted crypto yield. As they enter their next phase of growth, they are seeking a senior technology leader to set and execute a forward-looking technology vision that will enable the evolution of their platform and support long-term scalability, security, and compliance. This is a leadership opportunity within a high-performing engineering team where you will shape next-generation infrastructure, and deliver impact at scale in a fast-moving, regulated environment. Key Responsibilities: • Own the end-to-end technology strategy, architecture, and execution across the platform., • Lead engineering delivery, infrastructure, and security while partnering with Product, Risk, and Operations., • Design and implement a migration path from legacy custodial systems to vault-native structures., • Champion engineering excellence across quality, reliability, security, and operational discipline., • Build and scale a world-class engineering team with clear accountability and growth paths., • Represent technology in senior leadership discussions, partner engagements, and institutional due diligence. Key Requirements: • 10+ years of software development experience, including 3+ years in senior engineering leadership roles., • Proven track record of scaling engineering teams in high-growth B2B, fintech, or infrastructure-led environments., • Strong technical background in cloud-native systems, distributed architectures, and security-critical platforms., • Experience managing parallel systems and executing controlled migrations without client disruption., • Excellent communication skills and ability to bridge technical detail with business strategy., • Comfortable operating in a fast-paced, regulated environment with high accountability. Bonus: • Experience in crypto, DeFi, or digital asset infrastructure., • Familiarity with smart contracts, hybrid on-chain/off-chain architectures, and regulatory frameworks (MiCA, SOC 2, ISO 27001). What They Offer: • A senior leadership role with direct impact on the company’s growth and technology direction., • The opportunity to shape the future of institutional digital asset infrastructure., • Competitive compensation and equity participation., • Flexible remote setup with quarterly strategic gatherings in Helsinki or London.

At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you’re ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. THE WORK: We are looking for a Senior Software Engineer passionate about solving ambitious problems and working directly with Ripple Trading and Markets in the cross-border payments space. We are passionate about the growth of our engineers and place a premium on career development. You will have a high degree of accountability and responsibility from Day 1. You will be an integral part of the Ripple Trading and Markets Team, building scalable, resilient and performant trading systems in a constantly evolving and fast paced environment. You will have real impact and have the opportunity to drive the architectural roadmap, whilst looking to optimize away manual inefficiencies. Example projects: The team has helped develop a number of modular building blocks • Low-latency Algorithms for Automated Trading and Systematic Market Making, • Real-time streaming pipelines and signals, • Pricing libraries and tooling, • Further evolution of the Algo suite, refining the signal processing and breadth of trading strategies and products., • Building towards an event-driven architecture to connect the logical building blocks and provide integrated communication between trading systems and to other partners., • Be an ambitious builder, working up and down the stack, mixing software engineering, data engineering, and distributed systems knowledge to build modern enterprise payment applications., • Build reliable, high-throughput, low-latency microservices to power a diverse range of trading use cases, • Engage in the complete software development lifecycle by collecting requirements, showcasing solid software design principles, and maintaining operational excellence through unit and integration testing, • Be a true owner, managing and supporting Trading Engineering applications throughout product lifecycle, • Work with teams across the organization, including product, legal, and business development to think beyond the technical implications of your design decisions, • Continuously raise our standard of engineering excellence by implementing and driving standard processes for coding, testing, and deployment, • Proactively identify customer and infrastructure difficulties and drive corresponding solutions., • 5+ years of software development with minimum 2 years in Ops or DevOps experience in trading environments, with expertise in large-scale distributed systems; recent work in Java, Go, or Scala is preferred., • Hands-on experience with container orchestration (Kubernetes, Docker, etc.) and cloud infrastructure, especially AWS; familiarity with Infrastructure-as-Code tools like Terraform or CloudFormation., • Strong CI/CD and deployment pipeline skills, with a security-first mentality and experience building scalable, robust, and secure distributed services., • Background in front-office trading systems, ideally with exposure to FX or crypto trading; front-end experience with React or similar frameworks is a plus., • Collaborate with the team to implement, configure, and manage comprehensive monitoring, logging, alerting, and observability solutions - advocating for security best practices., • Deploy, manage, operate, and scale applications and services on AWS - whilst troubleshooting performance issues across the stack., • Collaborative, agile approach, passionate about clean architecture, continuous improvement, and engineering standard methodologies., • Strong communication and mentorship skills, with a desire to share knowledge and work closely with a diverse and high-performing team. WHO WE ARE: Do Your Best Work • The opportunity to build in a fast-paced start-up environment with experienced industry leaders, • A learning environment where you can dive deep into the latest technologies and make an impact. A professional development budget to support other modes of learning., • Thrive in an environment where no matter what race, ethnicity, gender, origin, or culture they identify with, every employee is a respected, valued, and empowered part of the team., • In-office collaboration for moments that matter is important to our culture, and we give managers and teams the flexibility to decide which 10+ days a month they come in., • Bi-weekly all-company meeting - business updates and ask me anything style discussion with our Leadership Team, • Competitive salary, bonuses, and equity, • Competitive benefits that cover physical and mental healthcare, retirement, family forming, and family support, • Employee giving match, • R&R days so you can rest and recharge, • Generous wellness reimbursement and weekly onsite & virtual programming, • Generous vacation policy - work with your manager to take time off when you need it, • Industry-leading parental leave policies. Family planning benefits.

Engineering Lead | Hands-on | Typescript | Python | FinTech | Hybrid London | Up to £120k We’re hiring an Engineering Lead within a high-growth fintech/data intelligence scaleup. This is a hybrid role that combines hands-on technical expertise with line management and team development. 🔧 The Role Hands-on Engineering Lead, leading a team of 4–9 engineers across FE, BE, Full-Stack, Mobile, and Platform. You’ll guide architecture, drive delivery, step into the code when needed, and influence product direction. 🔑 Key Responsibilities • Lead and mentor a high-performing engineering team, growing it over time., • Stay hands-on: solve technical challenges, support incidents, validate architecture., • Own system design, architecture decisions, and engineering quality within your domain. 🔍 Key Requirements • Senior-level engineer with strong technical depth with Typescript and/or Python, • Proven line management experience (you enjoy developing people)., • Robust systems design and architecture skills - able to design, critique, and scale complex systems., • Hands-on mindset: can dive into code and lead by doing when needed. ✨ Nice to Have • Experience with distributed systems or big-data architectures, • Background in high-growth, fast-scaling tech environments 🚀 Why Join • Shape the engineering foundation of a company transforming a legacy financial sector, • High ownership, fast decision-making, and large greenfield scope, • Clear progression as the organisation expands, • Hybrid, office-first culture (typically 1–3 days/week in London), • Competitive salary £120k + bonus This position does not provide visa sponsorship and requires existing right to work in the UK. If your skillset matches, please apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely it has been unsuccessful.

Founding Engineer | London (Hybrid) | £200,000 + Equity At Dex, we're helping build the early, elite teams for London's most ambitious companies. We are partnered with exceptional, 'breakout' AI startups, some you'll know, some in stealth, all with world-class backing (YC, A16Z, etc.) and truly game-changing missions. The Opportunity This is not a typical "big team" leadership role. We are looking for proven technical leaders, CTOs, ex-founders, and top-tier Principal Engineers, who are still deeply technical and want to keep building! Our partners are scaling fast. They need leaders who can own and scale core product, infrastructure, and help lead strategy, whilst also writing the code to make it happen. You will be a force multiplier, defining the "how" for a small, world-class team and solving the hardest technical challenges. What You’ll Work On • Define and own the technical strategy for core, business-critical AI products., • Lead the architecture and build the next-generation of scalable, high-performance systems that can handle millions of users and complex AI workloads., • Solve the hardest problems in applied AI: from model fine-tuning and novel RAG techniques to high-throughput, low-latency data infrastructure. What You'll Have • A proven track record: You have been a CTO, Founder (especially from YC/EF), or a Principal/Staff Engineer at a successful, high-growth startup., • Expert, "hands-on" skills in TypeScript and building complex distributed systems., • Deep expertise in architecting and deploying complex AI/ML systems (LLMs, RAG, data platforms)., • You've likely done this before, and are raring to do it again, faster, better, and with a world-class team. If you’re interested, apply here to head to the website, where you can sign up and speak to us. After your call, you'll be sent the full details, as well as be matched with other teams that we think you’ll love.

Our client is a global, multi-billion AUM quantitative investment manager operating across all major liquid markets. With a strong track record and a research-driven culture, they continue to scale aggressively across trading and technology. They are now looking for a Software Engineer to join a high-impact derivatives team responsible for the accuracy, automation and reliability of all futures and options lifecycle processes across the firm. You will design, build and maintain scalable systems that manage expiries, contract rolls, corporate actions, coupon payments and other lifecycle events, ensuring full data integrity for front-office trading and research teams. Tech Stack: Python/C#, SQL, distributed systems, CI/CD pipelines The core function of this role is to ensure the availability, quality and automation of derivatives reference data and lifecycle workflows across global exchanges, directly supporting trading, operations and risk. The firm offers market-leading compensation and a collaborative engineering culture.

Platform Engineer – Trading London (3 days/week) | £150k + significant equity The mission Join an early-stage, VC-backed startup building a trading platform for GPU. Users hedge and speculate on spot prices like any financial market, backed by top-tier investors (including Anthropic backers) and founders from MIT, Cambridge, Oxford. The role This is a greenfield platform engineering role with complete ownership over the core architecture. You'll design and build the systems powering real-time trading from the ground up, working directly with exceptional founders on one of the most ambitious infrastructure challenges at the AI/compute-financial markets intersection. Clear path to VP/CTO leadership. What you’ll do • Architect the full platform stack (Python, TypeScript, Golang) handling trading engine, pricing models, hedging mechanisms and marketplace functionality., • Build scalable, low-latency systems for real-time order matching, risk management and market data distribution., • Design resilient infrastructure that can handle massive compute trading volumes with 24/7 reliability., • Integrate with compute providers, exchanges and financial protocols while maintaining strict security and compliance., • Collaborate directly with founders on technical roadmap, hiring strategy and product evolution, with full flexibility to introduce new technologies and paradigms. What you bring • Deep platform/distributed systems experience in high-stakes environments (trading, fintech, infra or high-throughput services)., • Strong proficiency across Python/TypeScript/Golang (or equivalent polyglot stacks) with proven ownership of production-grade systems., • Expertise in real-time systems, performance optimisation, fault tolerance and scalable architectures under uncertainty., • Experience with financial protocols, market data feeds, order matching or compute infrastructure is a strong plus., • Thrives in greenfield environments: making architectural trade-offs, shipping fast, iterating based on live feedback. Why you might care • Early-stage opportunity to define a category-leading platform at the nexus of AI compute economics and financial markets., • £150k base + substantial equity upside with world-class founders and elite VC backing., • London-based, hands-on technical leadership role tackling novel problems with brilliant minds and rapid impact.

Infrastructure Support Engineer – AWS Location: London Comepnsation: £200,000+ A leading global quantitative investment firm is seeking an experienced Infrastructure Support Engineer with strong AWS expertise. This role offers the opportunity to maintain and optimize a secure, scalable cloud infrastructure supporting advanced trading strategies. Responsibilities: • Manage and support AWS environments using core services such as EC2, S3, and VPC., • Troubleshoot and resolve complex infrastructure issues independently., • Automate cloud operations using Terraform, CloudFormation, Python, and Bash., • Monitor performance and costs, implementing optimizations as needed., • Collaborate with development teams to support application deployment and operations., • Assess new cloud technologies to improve infrastructure reliability and security., • Document processes and support knowledge sharing across teams. Requirements: • Proven hands-on experience with AWS services and cloud infrastructure., • Strong troubleshooting skills in complex, distributed environments., • Proficiency with scripting languages and configuration management tools (Ansible, Terraform)., • Experience with container technologies such as Docker, ECS, and Kubernetes., • Knowledge of Windows and Linux system administration., • Familiarity with performance tuning and cost management in the cloud., • Agile development experience and strong communication skills. This position offers the chance to play a key role in maintaining critical infrastructure within a fast-paced, innovative environment. Candidates with a passion for AWS and cloud infrastructure are encouraged to apply.

Role: SRE Skills: Deep Linux, Scripting - Python, DevOps, Kubernetes Salary: £500k Plus Location: London The ideal candidate comes from a top-tier tech environment (FAANG, elite trading, hyperscale infra). They have experience building technology 0→1, owning systems end-to-end, and working close to the metal. They will operate across everything from bare-metal Linux to modern build and observability stacks. Overview Join a core engineering group as Lead Site Reliability Engineer, designing and scaling Linux platforms that underpin ML/AI-driven trading. You will architect and own reliability for massive simulation, HPC, and production workloads—ensuring ultra-reliable, ultra-fast trading systems. This is a hands-on, leadership role focused equally on technical depth, strategic decision-making, and driving platform SRE excellence. Key Responsibilities • Lead SRE practices for Linux platforms powering low-latency, high-throughput trading workloads., • Architect, optimize, and tune Linux for performance, resilience, and minimal latency., • Drive incident response, root cause analysis, and continuous reliability improvement across production systems., • Oversee system automation and reproducibility—build, deploy, and fleet-manage bare-metal Linux and containerized stacks., • Manage and enhance Kubernetes clusters, network configuration, and large-scale orchestration., • Set observability standards; expand monitoring, alerting, and performance metrics across platforms., • Analyze networking, kernel-level performance, and distributed systems—solving core challenges in a multi-petabyte, multi-cluster environment., • Build Python tools for automation, reliability engineering, and performance analysis., • Design highly distributed systems What You Will Work On • Ultra-reliable, high-performance trading infrastructure where every engineering optimization affects performance, • Next-generation simulation and HPC compute pipelines, supporting ML/AI workflows at scale., • Integration and continuous improvement of internal and open-source tools for automation and reliability., • Strategic platform direction: shaping foundational systems for critical infrastructure in an elite trading environment. Team and Culture • Small, autonomous Linux SRE team with direct ownership and impact., • Collaborative engagement with quants, researchers, and trading experts to deliver robust platforms., • A culture built on deep technical ownership, learning, and high standards of performance engineering Apply now for an informal confidential chat!

Job Title: AI Researcher Location: Cambridge or London, UK This is a permanent position with candidates required to do hybrid working in either Cambridge or London. Our client are looking for AI Researchers specialising in Reinforcement Learning with Human Feedback (RLHF) and Generative AI. In this role, you will design and optimise the algorithms that align large-scale generative models with human preferences, ensuring they are safe, controllable, and capable of producing high-quality outputs across multiple modalities. You’ll sit at the intersection of RL, LLMs, and generative modelling, helping us build the next generation of foundation models Responsibilities: Develop and refine RLHF algorithms for large language and generative models. Research and implement deep reinforcement learning methods (policy gradients, actor-critic, off-policy learning) for model alignment. Train, fine-tune, and evaluate LLMs and diffusion models at scale. Design experiments to align generative outputs with human and organisational preferences. Collaborate with researchers, engineers, and human feedback teams to build scalable alignment pipelines. Publish findings in top-tier AI conferences and contribute to open-source frameworks. Key Requirements: PhD in Computer Science, Machine Learning, or related field. Publications at NeurIPS, ICML, ICLR, ACL, or related venues. Deep expertise in Reinforcement Learning (policy optimisation, reward modelling, RLHF). Hands-on experience training/fine-tuning generative models (LLMs, diffusion, transformers, GANs). Strong knowledge of deep learning frameworks (PyTorch, JAX, TensorFlow). Proficiency in Python and standard ML libraries. Solid foundations in probability, optimisation, and statistics. Experience working with large-scale distributed training on GPUs/TPUs. If this sounds of interest, please reach out to

Location: London Company: Timebeat.app Reports to: Head of Engineering / CTO About Timebeat Timebeat is building next-generation infrastructure for precise, verifiable time and frequency synchronization across distributed systems. Our technology sits at the intersection of hardware, FPGA design, and large-scale systems, enabling customers to measure, guarantee, and reason about time in ways that were not previously possible. As we scale, we are looking for an FPGA engineer who wants to own major technical initiatives, help shape architecture decisions, and grow into a people- and project-leadership role. The Role This role is ideal for a strong FPGA engineer who is ready to take the next step in their career—moving beyond individual contribution into technical leadership, mentoring, and project ownership. You will remain hands-on with FPGA design while also: • Leading FPGA-centric projects end-to-end, • Acting as a technical point of contact across hardware, firmware, and software teams, • Supporting and mentoring other engineers, • Helping define best practices, processes, and technical direction for FPGA development at Timebeat Key Responsibilities Technical Leadership & Delivery • Own the architecture, design, and delivery of FPGA solutions used in production systems, • Translate system-level requirements into FPGA designs and implementation plans, • Drive design reviews, technical decision-making, and trade-off discussions, • Ensure designs meet performance, reliability, and maintainability requirements Hands-On FPGA Engineering • Design, implement, and verify FPGA logic using VHDL and/or Verilog/SystemVerilog, • Work with high-speed interfaces, clocks, timing closure, and synchronization logic, • Integrate FPGA designs with embedded software, drivers, and system-level components, • Support bring-up, debugging, and validation on real hardware Team Growth & Mentorship • Mentor junior and mid-level engineers through code reviews and technical guidance, • Contribute to hiring and onboarding as the FPGA team grows, • Help define engineering standards, documentation, and development workflows Cross-Functional Collaboration • Work closely with software, systems, and product teams to deliver customer-facing features, • Communicate complex technical topics clearly to both technical and non-technical stakeholders, • Support customer or partner engagements where deep FPGA expertise is required Required Skills & Experience • Strong experience in FPGA design and development in a production environment, • Proficiency in VHDL and/or Verilog/SystemVerilog, • Experience with FPGA toolchains (e.g. Xilinx / AMD, Intel / Altera), • Solid understanding of:, • Clocking and timing constraints, • CDC, synchronization, and deterministic timing, • Debugging FPGA designs on hardware, • Experience owning significant technical components or projects, • Comfortable reviewing others’ work and providing constructive feedback Nice to Have • Prior experience leading small teams or acting as a technical lead, • Experience with time-sensitive systems, networking, or high-precision timing, • Exposure to embedded Linux, drivers, or low-level software interfaces, • Familiarity with formal verification, simulation frameworks, or CI for FPGA, • Interest in growing into an engineering management or hybrid lead role What We're Looking For • An engineer who enjoys both building and leading, • Someone excited by ownership, responsibility, and seeing projects through to production, • A collaborative communicator who raises the bar for those around them, • A pragmatic problem-solver who balances technical excellence with delivery Why Join Timebeat • Work on deep technical problems with real-world impact, • Influence the technical direction of FPGA development from an early stage, • Grow into a leadership role at a fast-moving, highly technical company, • Competitive compensation, flexible working, and strong engineering culture

Location: London, UK Industry: Investment Banking We’re looking for an experienced Backend Developer to join a leading investment bank and help drive innovation that empowers people and businesses across Asia, Africa, and the Middle East. This role is part of the Blade function, delivering strategic initiatives that make a real impact. Prior banking experience is highly desirable. The Key Responsibilities As a senior developer, you’ll be driving our platform forwards and delivering quality solutions to business-critical customer requirements. Based in London, you will collaborate in a dynamic global team with fellow technologists, business analysts, project managers and business stakeholders across multiple locations. Key Attributes • An excellent Java developer with good software design principles and the ability to write robust code and accompanying test suites, • Ability to write efficient, clear code and be able to articulate what has been implemented and why, • Self-starter who can drive/facilitate requirements and development effort, • Take ownership and responsibility for the full development lifecycle, • Experience working in an agile development environment, • A team player, capable of engaging with other teams, • Experience in the end-to-end design, development and support of financial markets systems, • Experience with real-time (event-driven) architectures, • Being a full-stack web developer is a plus Technical skills: • 5+ years hands on development with investment banking IT experience, • Core Java (essential), Concurrency, Spring, • RX Java is a plus, • Experience in micro-services and container technologies (preferably Docker) is a plus, • Familiarity with CI/CD and DevOps, • Experience with distributed data stores a plus, • Functional programming experience a plus Functional skills: • Financial Market domain knowledge, • Investment banking is a strong plus, • Derivatives knowledge is a plus, • e-trading technology experience is a plus Soft skills: • Fluent in English (speaking and writing), • Strong ownership and ability to deal with ambiguity, • Outstanding problem-solving skills, • Proactive, self-starter, autonomous, • Good team spirit Rate: GBP 600 - 650/day (negotiable) PAYE inside IR35 (Annual leave: 38 days including Bank Holidays + 3% Pension + 15% Employees NI)

For more than two decades, Orange Logic has empowered a wide range of clients with its digital asset management system, Orange Logic Platform. We’ve worked with almost every industry, from Finance to NGOs, Media giants to educational institutions, securing and organizing their assets. This role will enhance Orange Logic’s software by participating in the design, development, maintenance and testing process. What you can expect in your role: • Designing software architecture for our platform to meet functional requirements as well as security, quality, performance, and ease of maintenance, • Guiding and assisting the development team with an active involvement in the development process, • Obtaining requirement feedback from internal teams/clients to maintain/support the product development, • Supervising testing and deployment, • Performing code reviews on other team member’s work, • Collaborates with distributed teams in France, Vietnam, and the United States You are: • 8+ years’ practical experience on a web-based application, • Proficient with English (both verbal and written), • Proficient with any back-end programming languages (i.e. C#, Java, Python, C++, etc.), • Outstanding knowledge of software and application design and architecture, • Highly analytical mindset, with an ability to see both big picture and the details, • Experience with the database management tool SQL is a plus, but not mandatory Perks of joining the team: • Competitive compensation & benefits package, • Remote Work Environment How to get started: If you’re up for the challenge to be part of a growing engineering team we’d like to hear from you. Apply today! By submitting this application, I certify that all information provided herein is true, accurate, and complete to the best of my knowledge. I understand that any false or misleading information may result in disqualification from consideration or, if discovered after acceptance, may lead to immediate dismissal. Orange Logic is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all our employees. We respect your privacy. Learn more about how we handle applicant data in our ___.

Golang Engineer A fast-growing London-based software company building highly scalable, cloud-native platforms used by thousands of customers worldwide seek a Golang Engineer to help scale the next generation of distributed systems. The engineering culture values clean code, ownership, collaboration, and continuous improvement. The Role You’ll be working on high-performance backend services and infrastructure powering mission-critical systems. You’ll have real influence over technical direction, architecture, and tooling, while collaborating closely with product, SRE, and platform teams. What You’ll Be Doing • Designing and building scalable Microservices in Go, • Developing and maintaining cloud-native applications running on Kubernetes, • Building APIs, internal tooling, and background processing systems, • Improving performance, reliability, and security of production services, • Contributing to architectural decisions and best practices, • Writing clean, well-tested, and well-documented code What We’re Looking For • Strong commercial experience with Go (Golang), • Hands-on experience deploying and operating workloads in Kubernetes, • Solid understanding of microservices architecture and REST/gRPC APIs, • Experience with cloud platforms (AWS, GCP, or Azure), • Comfortable with CI/CD pipelines and infrastructure-as-code, • A proactive, collaborative mindset Nice to Have • Experience with Helm, Terraform, Prometheus, or Grafana, • Knowledge of service meshes, event-driven systems, or Kafka, • Previous experience in high-scale or SaaS environments What We Offer • £100-£120k base + equity, • Once every other week in the office, the rest is WFH, • A supportive, engineering-first culture where your ideas matter

Lead Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £130,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Lead Software Engineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems that disrupt an industry? Interested in working with the best talent on the market and having a real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Lead Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the team are growing fast and they're looking to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Lead Software Engineer: • Tech agnostic but preferable experience working with Golang, Rust, Java and/or C/C++., • In-depth knowledge of distributed systems, building solutions at scale where performance, reliability and availability are key considerations., • Confident in leading the definition and creation of solutions from 0-1, solving ambiguous and complex challenges., • Experience working on software infrastructure or building Cloud native software using Kubernetes., • Understanding of systems design and Open Source components., • If you have knowledge of building virtual machines - Virtual servers, virtual networking or network programming - that's a plus... but definitely not needed! If this sounds like you, feel free to apply and I can run through more details! Lead Software Engineer | Distributed Systems | Sustainable Cloud Native Platform

Senior Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior Software Engineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems that disrupt an industry? Interested in working with the best talent on the market and having a real impact on projects? If so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Senior Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world leading Cloud platform, the team are growing fast and they're looking to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most accountable and sustainable cloud provider🌳 What they're looking for in a Senior Software Engineer: • Tech agnostic but preferable experience working with Golang, Rust, C/C++ or Java., • In-depth knowledge of distributed systems, building solutions at scale where performance, reliability and availability are key considerations., • Experience working on software infrastructure or building Cloud native software using Kubernetes, • Understanding of systems design and Open Source components., • If you have knowledge of building virtual machines - Virtual servers, virtual networking or network programming - that's a plus... but definitely not needed! If this sounds like you, feel free to apply and I can run through more details! Senior Software Engineer | Distributed Systems | Sustainable Cloud Native Platform

[Up to c. £300k Comp Package | Hybrid Working] Role Overview We’re working with a high-growth trading and digital-assets firm seeking a seasoned engineering leader to take ownership of their client-facing technology ecosystem. As the organisation expands into new markets and contends with evolving regulatory demands, this role will spearhead the architecture and delivery of platforms that underpin client onboarding, reporting, data exchange, and compliance workflows. You’ll guide the engineering strategy for a suite of internal and external systems - including CRM tooling, realtime reporting pipelines, API integrations, client portals, and surveillance utilities - while coaching a small but high-impact engineering team. This is a hands-on leadership position where you’ll set the roadmap, refine standards, and shape how the firm delivers secure, reliable, and regulation-ready client technologies... Key Responsibilities • Define and execute the engineering strategy for client-facing systems spanning CRM workflows, reporting platforms, and external integration points, • Lead, mentor, and develop a team of software engineers, fostering strong delivery discipline, resilience, and technical growth, • Partner closely with commercial and operational stakeholders to understand client needs and translate them into scalable, maintainable solutions, • Oversee the design and build of distributed services and APIs that support both realtime and batch data exchange with counterparties, • Own the engineering roadmap for the client web portal, ensuring robust authentication, data integrity, auditability, and consistent user experience, • Manage the lifecycle of compliance-aligned platforms such as trade-surveillance modules, transaction-monitoring systems, document repositories, and ID-verification capabilities, • Drive best practices across code quality, architecture, observability, and secure software development, • Ensure systems meet regulatory requirements relating to data handling, retention, reporting, and operational resilience, • Coordinate delivery across multiple concurrent projects, maintaining clear communication with technical and non-technical stakeholders, • Evaluate third-party technologies, influence vendor selection, and oversee integration efforts in partnership with legal and compliance teams What You’ll Bring… • 7-12 years of engineering experience, including time as an Engineering Manager, Technical Lead, or Senior Engineer in financial services, trading, fintech, or another high-complexity environment, • Demonstrated ability to architect and scale distributed systems, client-serving APIs, or multi-component full-stack platforms, • Strong technical judgment and the ability to translate ambiguous requirements into clear design decisions, • Hands-on experience working with web technologies (e.g. modern JavaScript frameworks), backend services (Python, Go, or JVM languages), data-integration pipelines, and cloud-native tooling, • Understanding of reconciliation workflows, data lineage, and the operational safeguards required for systems that must be accurate, auditable, and failure-tolerant, • Proven ability to work effectively in regulated settings, with familiarity around data-protection, security controls, and governance practices typical in finance/fintech, • Excellent communication skills and the ability to collaborate with senior stakeholders across business, compliance, and engineering, • A practical, product-focused mindset - solving business problems with technology, not the other way around ...

Affinity Labs: Founding Engineer (Backend) Location: London Area, United Kingdom · On-site Company Description At Affinity Labs, we’re building the future of company creation, a full-stack AI venture studio that partners with content creators to co-found authentic, scalable software businesses. By combining AI-native development with creator-led distribution, we're pioneering a new model of monetisation by to rapidly build, launch, and scale digital ventures aligned with creators and their audiences. We aim to launch ventures 10x faster and cheaper than traditional methods using our internal "AI factory": a multi-agent architecture, reusable component libraries, and a growing knowledge graph that learns from every product we ship. Why Affinity Labs: Ship at rapid pace with AI-accelerated workflows, see your work distributed to thousands of users at launch, and compound impact across multiple product, not just one. Role Description You’ll lead end-to-end backend development across our products: scoping services, designing data models and APIs, building, testing, shipping, and iterating in tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive backend product development, collaborating closely with founders, creators, and product/design to turn lean specs into reliable, scalable services. Responsibilities • Implement features end-to-end on the backend (APIs → data models → integrations) and maintain quality while moving fast., • Run tight build, test, iterate, ship loops; provide realistic estimates and surface blockers early., • Manage tech debt pragmatically; record key decisions as lightweight ADRs/notes in the tooling., • Participate in daily standups and weekly planning, contribute to technical strategy & execute from Linear tickets., • Contribute to architecture and product discussions; be heard in debate, align to unified decisions., • Own operability: set up and maintain CI/CD, monitoring/alerting, performance & error budgets, and safe rollback paths., • Build and integrate AI features (LLM/agent workflows, RAG/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements • 3-6+ years building production backends/services, with shipped work and clear ownership., • Strong Python (FastAPI) and database skills (PostgreSQL/MongoDB); solid API design fundamentals., • Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts., • Comfortable with Redis (caching/sessions) and common queue/messaging patterns., • Startup mindset: high ownership, pace, ambiguity; willing to burn the midnight oil when needed., • Growth mindset & flexibility: open to feedback; not rigid about stack/tools., • Clear communicator & collaborator; lean on your experience to guide product decisions., • Evidence of shipping quickly in small teams (links to repos, case studies, or live services). Desired • Node.js alongside Python for services or integrations., • Experience with vector databases (e.g., Chroma) and embedding pipelines., • LangChain or CrewAI for orchestration; MCP servers for integrations., • Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics., • Planning & execution in Linear (or similar). Tools & Stack • Backend/Runtime: Python (FastAPI), Node.js., • Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions)., • Vectors/Embeddings: Chroma (or similar)., • AI Models & APIs: Claude (Anthropic), Gemini (Google); Amazon Nova Canvas (vision), Deepgram (audio)., • AI Dev Tools: LangChain or CrewAI (orchestration), MCP servers (integration), GitHub Copilot / Claude Code., • Infrastructure: AWS (serverless functions), Docker (primarily for custom MCPs)., • Frontend (when needed): React/Next.js (for dashboards/admins, used selectively). Competencies & Behaviours • Communicates clearly with technical and non-technical teammates., • Takes ownership from concept to deploy and through maintenance., • Balances technical excellence with pragmatic delivery to meet business needs., • Adapts quickly to changing requirements and emerging tech; applies AI learnings., • Sets clear goals, tracks progress, and hits commitments; collaborates across disciplines. Why this role is a career launchpad • Own the code & the company. You step in as a Founding Engineer with a meaningful equity stake from day one., • Ship faster with AI at your side. Our workflow bakes in AI so you spend your time solving real problems—not boilerplate., • Ride a rocket. Our wider vision is big and the bar is high; we need driven people who can help us achieve an ambitious roadmap., • Grow like crazy. You’ll architect, build, and launch multiple products each year. The shipping reps you’ll get in 12 months here would take 3–4 years in a typical startup. There’s a lot of work, it’s high intensity, and the expectation is to ship extremely quickly., • Learn from builders, not bosses. Work shoulder-to-shoulder with a team that has scaled VC-backed startups, closed multi-million-pound term sheets, and collaborated with 1,000+ creators across formats and categories.

At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you’re ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. THE WORK: RippleX is dedicated to empowering the builders of tomorrow on the XRP Ledger (XRPL), one of the world’s fastest and most reliable public blockchains. We believe in democratizing the digital economy by providing practical support, empowering a community of developers, and offering the expertise of a visionary technology company. The XRPL is a decentralized, public blockchain led by a global community of businesses and developers looking to solve problems and create value. Proven reliable over more than a decade of operation and closing over 90 million ledger, the XRPL offers streamlined development, low transaction costs, high performance, and sustainability. We are looking for a senior engineer to help us maintain this high technical bar, while building innovative solutions to ensure the XRPL can power the growing needs of the global digital economy. WHAT YOU’LL DO: • Increase the capabilities, performance, scalability, and reliability of the XRP ledger., • Participate in the full software development lifecycle, including architecture, technical design, C++ development, bug fixing, as well as functional and performance validations., • Be part of the open-source XRP ledger community, setting high standards for coding, testing, and deployment., • Bachelor’s in computer science or similar, and 8+ years of software product development experience using C++., • Strong experience with large scale distributed systems development and architecture., • Prior team leadership and mentorship experience., • Passion for blockchain technology and its potential benefits., • Ability to learn new technologies and languages quickly., • Ability to independently solve highly complex problems with creative solutions. WHO WE ARE: Do Your Best Work • The opportunity to build in a fast-paced start-up environment with experienced industry leaders, • A learning environment where you can dive deep into the latest technologies and make an impact. A professional development budget to support other modes of learning., • Thrive in an environment where no matter what race, ethnicity, gender, origin, or culture they identify with, every employee is a respected, valued, and empowered part of the team., • In-office collaboration for moments that matter is important to our culture, and we give managers and teams the flexibility to decide which 10+ days a month they come in., • Bi-weekly all-company meeting - business updates and ask me anything style discussion with our Leadership Team, • Competitive salary, bonuses, and equity, • Competitive benefits that cover physical and mental healthcare, retirement, family forming, and family support, • Employee giving match, • R&R days so you can rest and recharge, • Generous wellness reimbursement and weekly onsite & virtual programming, • Generous vacation policy - work with your manager to take time off when you need it, • Industry-leading parental leave policies. Family planning benefits.

Travel & Aviation Technology - C++ - Flight Management Systems A global leader in travel and aviation technology is seeking a skilled C++ Engineer to join their Flight Management System (FMS) engineering team in London. This group builds mission-critical software used by airlines worldwide - powering real-time flight operations, route optimisation, and next-generation cockpit intelligence. You’ll work on high-performance, multi-threaded systems that directly impact global aviation efficiency, fuel optimisation, and safety -contributing to one of the most advanced FMS platforms in the industry. Responsibilities • Design and develop C++ applications for core Flight Management System components, • Work on real-time data processing for flight planning, scheduling, and air traffic control integration, • Implement and optimise algorithms for fuel efficiency, route optimisation, and aircraft performance modelling, • Contribute to multi-threaded, high-performance architectures used in large-scale airline operations, • Collaborate with system architects, engineers, and aviation domain specialists to enhance FMS capabilities, • Perform code reviews, debugging, unit testing, and performance tuning, • Support the evolution of cloud-enabled and AI-driven features within the FMS ecosystem Required Skills • Strong proficiency in C++ (C++11/14/17)., • Experience in multithreading, memory management, and performance optimization., • Solid understanding of software development life cycle (SDLC) and best coding practices., • Experience working with Linux-based development environments., • Strong problem-solving and analytical skills with a passion for aviation technology., • Good understanding of networking protocols and distributed systems is a plus.

Junior Applied Scientist London — Onsite Our client are building context-aware agentic systems that augment data science, software, and product teams inside large enterprises. The systems reason over complex organisational data, take multi-step actions, and integrate deeply with existing business workflows. We are now expanding the Applied Science team and are looking for exceptional early-career researchers who want to work on cutting-edge ML in a fast-moving product environment. This role is ideal for candidates finishing (or recently completing) a PhD at a top university, with a research track record at leading ML/AI conferences. As this is a role within the Applied team, candidates must be confident in their ability to move research through to production. What You’ll Work On • Develop and iterate on core models for context-aware enterprise agents, including planning, retrieval, grounding, and multi-step decision pipelines., • Conduct research on any ML frontier relevant to agentic systems e.g., LLMs, multimodal models, structured reasoning, data generation, or video-text modelling., • Build robust training, evaluation, and benchmarking setups for new model variants and agent behaviours., • Prototype new agent capabilities and work closely with engineering teams to turn them into production-quality features., • Analyse failure modes of agents in real customer environments and design methods to improve reliability, grounding, and actionability., • Contribute to internal research papers, technical memos, and (where appropriate) external publications. Who You Are • Currently completing or recently completed a PhD in Physics, Mathematics, Machine Learning, Computer Science, or a related field from a top university., • Strong publication record at leading venues such as NeurIPS, ICML, ICLR, ACL, CVPR, ICCV, or EMNLP., • Solid understanding of modern ML architectures (transformers, diffusion, retrieval-augmented systems, reinforcement learning, etc.)., • Strong coding skills in Python and experience with at least one major ML framework (PyTorch, JAX, TensorFlow)., • Ability to bridge high-level research with practical implementation., • Curious, humble, and excited to work on hard technical problems with real enterprise impact. Nice to Have • Experience in agentic or autonomous decision-making systems (not required)., • Prior work on LLM alignment, grounding, tool use, or planning., • Experience with enterprise data environments, knowledge graphs, or retrieval systems., • Hands-on experience with large-scale training, distributed compute, or evaluation tooling. Why Join? • Work on a high-impact ML problem space that blends deep research with real product deployment., • Collaborate with a world-class team of scientists and engineers with prior experience at leading AI labs and tech companies., • Opportunity to publish, attend conferences, and lead impactful research directions early in your career., • Competitive salary, equity, and benefits., • Located in central London with a strong in-person research culture.

Principal Software Engineer (Java) London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for some of the world’s largest Banks. We’re hiring on behalf of a leading payments consultancy, delivering cutting-edge solutions that integrate seamlessly with bank infrastructure to enable real-time, secure transactions across the globe. 🔍 What You’ll Be Doing You’ll be the focal point of a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. • Design and build scalable, high-availability systems processing millions of real-time transactions, • Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more, • Write clean, testable code using TDD and BDD, • Contribute to architectural decisions in a fast-evolving codebase, • Collaborate within Agile teams (Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. • Strong hands-on experience with Java 11+ (ideally Java 17), • Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA), • Experience with event-driven architecture, real-time messaging systems (Kafka, JMS), • Familiarity with asynchronous request handling, scalability, and system resilience 🎁 What’s In It for You • 💰 £100,000 – £115,000 base salary (DOE), • 🎯 20% bonus, • 🧠 Work with cutting-edge tech on globally impactful systems, • 🏡 Hybrid working – 1 day a week (or more if you’d like!), • 🌍 Opportunity to collaborate with major global banks, • 🚀 Fast-paced, product-led environment where your voice matters If you're a motivated Senior/Principal/Staff Java Software Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us.

Engineering Manager, MLOps, Marketplace, Ecommerce, | 35 Million Users | UK Remote OR London, Hybrid, 1 Day PW, Up to £140,000 About the Company Our client is an extremely well know, digital marketplace focused on sustainable ecommerce. With over 35 million of active users globally, they’re redefining how people buy and sell second-hand fashion, aiming to make the future of style both circular and accessible. The company has offices in UK, EU and US and experienced significant growth especially around the US market and now operates as part of a leading global e-commerce group. They pride themselves on fostering inclusivity, creativity, and innovation and values that extend to both their community and their teams. The organisation champions diversity, equal opportunity, and flexible working. They offer a progressive benefits package designed to support wellbeing, learning, and work-life balance. The role of Engineering Manager, MLOps, Marketplace, Ecommerce, | 35 Million Users | UK Remote OR London, Hybrid, 1 Day PW, Up to £140,000 Our Client is looking for an experienced MLOps Engineering Manager to lead and scale their MLOps function. You will be shaping how machine learning is developed, deployed, and scaled across the organisation. This is a genuinely high-impact role: you’ll lead a talented team of 6-8 engineers, set the strategic direction for ML infrastructure, and ensure the business continues to deliver reliable, scalable, and high-performing ML systems that drive real-world impact. Key Responsibilities for Engineering Manager, MLOps, Marketplace, Ecommerce, | 35 Million Users | London, Hybrid, 1 Day PW, Up to £140,000 • Manage and develop a team of 8 MLOps engineers, fostering collaboration, high performance, and personal growth., • Define and deliver the MLOps roadmap, aligning closely with the wider engineering and data strategy., • Provide guidance on architecture, tooling, and best practices for ML pipelines, deployment, monitoring, and incident management., • Partner with data science, ML, and product teams to ensure infrastructure supports innovation and business needs., • Oversee system reliability, cost optimisation, and vendor relationships to keep infrastructure scalable and efficient., • Take ownership of critical ML/infra incidents, ensuring swift resolution and continuous learning., • Deliver clear progress, risk, and priority updates to leadership in a concise and actionable way. Requirements for the role: • Proven experience leading an MLOps, ML Engineering, or Platform Engineering team., • Solid background in applied machine learning and a passion for platform disciplines., • Hands-on experience with cloud platforms (AWS, GCP, or Azure), including large-scale ML infrastructure management., • Knowledge of GPU computing for model training and serving., • Experience managing containerised workloads (Docker, Kubernetes, Kubeflow, etc.) and integrating with CI/CD tools (Jenkins, GitHub Actions, GitLab CI)., • Familiarity with distributed computing frameworks (Spark, Ray, TensorFlow Distributed, PyTorch Distributed)., • Strong understanding of monitoring, logging, and observability for large-scale ML systems., • Experience in cost optimisation for compute/GPU workloads., • Excellent people leadership and communication skills, able to influence technical and non-technical stakeholders., • Comfortable working in a fast-paced, collaborative environment with strategic and operational responsibilities., • Experience with vendor management and contract oversight., • Familiarity with tools such as Databricks, Tecton (or Feast), Seldon, or SageMaker. What can they offer you? • Private health and mental wellbeing coverage, including access to counselling and coaching., • Salary of up to £140,000+Bonus & Benefits, • 25 days annual leave, plus additional company-wide rest days and volunteer leave., • Flexible hybrid working, with the option to work abroad for limited periods., • Generous parental, IVF, and carer leave policies., • Learning and development budgets for conferences, mentorship, and skills growth., • Pension matching, life insurance, and recognition for service milestones. If you are interested in the Engineering Manager, MLOps, Marketplace, Ecommerce, | 35 Million Users | UK Remote OR London, Hybrid, 1 Day PW, Up to £140,000 then drop over your CV and we will give you a call if we think you are a good fit!

Research Software Engineer - World-Class AI Health Tech Scaleup - London / Hybrid Our world-class medical AI client is a rapidly expanding innovator at the intersection of AI and life sciences, with significant funding. They build multi-modal foundation models that span medical imaging, clinical, genetic, and omics data, for high-precision inference in late-stage clinical drug trials. They are scaling fast and on a mission to revolutionise therapeutic development, with cutting-edge ML and data analytics. The commercial potential of this work is phenomenal, as is its scope for its impact on society. They are looking to hire several experienced Research Software Engineers to partner closely with the Research team (currently ~12), playing a pivotal role in developing and optimising their next-generation, AI-driven biomedical platforms. If successful, you'll collaborate with ML specialists, data scientists, clinicians, and product teams to build scalable solutions that leverage complex, multimodal datasets. Some of the things you’ll contribute to ML Platform & Tooling • Build Python tooling, libraries, APIs and SDKs to support model training, evaluation and deployment, • Develop experiment-tracking, model-versioning and reproducibility tools, • Build scalable data pipelines for large clinical and research datasets, • Develop distributed systems for i.e. training foundation models, • Partner with researchers to understand workflows and remove bottlenecks, • Prototype tools and iterate quickly based on research feedback, • Write clean and scalable, well-tested Python code, • Maintain high standards in code reviews, documentation and CI/CD, • Contribute to architectural and tooling decisions Key requirements • Degree in Computer Science, Engineering, Maths or similar STEM topic from a leading institution (minimum Bachelor's, Master's preferred), • Strong Python engineering experience, • Experience building APIs, SDKs or developer tooling, • Solid understanding of distributed systems, • Comfortable working with complex data structures, • Familiar with modern software engineering best practices, • Ability to translate research papers into working code Strongly desirable experience • Experience with large-scale ML systems (model training, serving, platforms), • Experience supporting or working inside ML research teams, • Familiarity with ML frameworks (PyTorch, TensorFlow etc), • Experience building pipelines for scientific or healthcare data, • Knowledge of cluster compute, distributed training and GPUs, • Understanding of healthcare data or regulated environments, • Open-source contributions, • Cloud experience (AWS/GCP/Azure) Compensation & Benefits • Excellent base salary, • Generous equity allocation from day one, • Comprehensive health & wellness package, • Hybrid working (1 day/week WFH), • Chance to work at the frontier of AI × life sciences with real world impact If you want to build world-class tooling for cutting-edge biomedical research and join a rapidly scaling team doing genuinely meaningful work, get in touch!

About Us: We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience. Role: We’re looking for experienced Backend, Full Stack and Platform Engineers to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define in-store shopping. You'll help build engaging & intuitive app experiences and the event-driven & real-time backend services that power them. You’ll work across our platform, real-time data flows and APIs on a backend designed for scale & flexibility. Responsibilities: • Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources., • Build and document APIs (OpenAPI/AsyncAPI) for mobile and web clients, • Model and manage structured and semi-structured data across storage layers, • Integrate AI-driven personalisation and real-time insights into user flows, • Contribute to overall system design: service boundaries, data ownership, scaling, and observability Essential Qualifications: • Built modern full-stack applications w/ focus on backend (e.g. Python, Java, Go), • Worked with a variety of storage technologies (e.g. Postgres, Mongo, Redis, Object), • Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE), • Designed and implemented event-driven distributed systems (e.g. Kafka, Pulsar, RabbitMQ, MQTT, or similar), • Experience with container orchestration and service containerisation (Kubernetes, Docker), • Built and deployed services on any major cloud providers' services (Azure, GCP, AWS), • AI-Native development: use AI tools such as CoPilot or Cursor a collaborator and accelerator of development. Nice to Have: • Experience in web or Android development (e.g. Javascript, Typescript, React.js, Kotlin), • Worked with real-time data collection and/or processing, • Worked in an IoT or Edge-oriented architectures, • Experience or knowledge in retail POS, inventory, or loyalty systems

STEADROCK CAPITAL — AI & SYSTEMS ENGINEER (Graduate / Junior) Location: Mayfair, London Start: Immediate Type: Full-time, In person Compensation: £40,000–£60,000 + discretionary bonus About Steadrock Capital Steadrock is a London-based multifamily office and investment firm operating at the intersection of real estate private equity, AI compute infrastructure, and quantitative finance. We recently acquired 10 Queen’s Gate Place (SW7) for redevelopment into six luxury units (Grade II listed) with a projected GDV materially above £17M. Alongside our real estate strategy, we operate a dedicated AI infrastructure stack centered on an NVIDIA DGX system, used for in-house modelling, automation, and agent development. We are building a small, elite technical team. This role is a core pillar of that team. Role: AI & Systems Engineer. This is a hybrid role blending backend engineering, GPU systems, AI agent development, and automation. In your role, you will work with a part time, outside, technical consultant, specialising in the responsibilities below. This will allow for structured and greatly accelerated learning. Day to day, you will work directly with the founder, our economics lead, and our quantitative modelling lead. This is not a corporate environment. We move fast, prefer clean architecture, and value people who can think independently. Core Responsibilities You will own the technical backbone of Steadrock's internal systems: • Compute Infrastructure (DGX), • Manage our NVIDIA DGX server (Linux environment, CUDA, system health), • Build, test, and maintain internal APIs (FastAPI/Flask), • Design stable ngrok / reverse-proxy / network connections for remote access, • Optimise GPU utilisation and monitor performance, • AI Agent & Automation Development, • Develop pipelines for fine-tuning, embeddings, inference, • Backend & Internal Tools, • Build the “Steadrock OS”: internal dashboards, scheduling tools, risk engines, • Maintain Python codebase, Git repositories, environments, • Connect iPhone/iPad workflows with backend systems, • Data & Real Estate Interfaces, • Build automated comparables engines, • Assist with financial modelling scripts What You Need Technical • Strong Python, • Experience with Linux (Ubuntu), bash, SSH, • Understanding of GPUs, CUDA basics, or willingness to learn fast, • Experience with FastAPI, Flask or similar, • Basic networking knowledge (ports, tunnels, proxies), • Experience with LLM APIs (OpenAI, Anthropic, DeepSeek, Qwen), • Exposure to Docker or Kubernetes, • Familiarity with cloud providers (AWS/Azure/GCP), • Coursework or experience in ML, transformers, NLP, or distributed systemsBonus (not required), • Interest in real estate, • Interest in finance or quantitative modelling, • Experience building agents (LangChain, LlamaIndex, custom architectures) What We Offer • Work directly with an NVIDIA DGX system, • Build AI systems from the ground up, • Very high autonomy, • Exposure to private equity, high-end real estate development, planning strategy, • Freedom to design architecture as you see fit, • A fast-moving environment with no bureaucracy, • The opportunity to become a foundational technical hire (progression is fast Why This Is a Unique Role This is not a typical graduate software job. It is a rare opportunity to join a small, elite, multi-disciplinary team and: • Build AI systems with real impact, • Architect the compute backbone of a growing multi-family office, • Influence investment analysis, real estate strategy, and automation, • Touch every part of the tech stack, • Grow into a CTO-level position You won’t be maintaining someone else’s stack — you will be building Steadrock’s from scratch. Application Process • CV, • Short Python task (we will send a practical DGX-related challenge), • Technical interview (systems + Python), • Final discussion with the founder Work Location: In person

London or Manchester (Hybrid) | £50,000 – £80,000 + Equity About us At the forefront of using investment portfolios as security for access to credit, Firenze is emerging as the category defining leader in what is known as “Lombard lending”. We already work with some of the UK’s leading wealth management firms to unlock access to what has historically only been available to UHNW clients of private banks. Backed by top tier investors, Firenze is now scaling the team to continue to ensure our credit infrastructure is underpinned by innovation, cutting-edge technology, and an unwavering commitment to driving client outcomes. Role Overview As a Full Stack Software Engineer, you’ll design, build, and deliver customer-facing features across our greenfield platform. You’ll work end-to-end—crafting TypeScript frontends and robust Java back-ends—while learning from experienced engineers and contributing to a modern, scalable architecture. This is a hands-on role with plenty of opportunity to develop your technical depth, gain exposure to DevOps, cloud, and observability practices, and help define how we build software at Firenze. With no legacy systems, you’ll be shaping our platform from the ground up and growing alongside a team that values mentorship, learning, and engineering excellence. Key Responsibilities • Feature Delivery: Collaborate with senior engineers to deliver new features from design to production., • Back-End Engineering (Java): Build APIs and microservices using Java (Spring Boot, Micronaut, or Quarkus), with guidance on best practices for performance and reliability., • Front-End Engineering (TypeScript – Nuxt/Vue): Develop responsive, accessible UIs with strong component and state management., • Data & Integration: Work with PostgreSQL, caching (Redis), and messaging (Kafka/SQS) — learning how to design resilient data flows., • Quality & Testing: Contribute to our testing culture (JUnit, Playwright, CI pipelines) and learn how to scale reliable delivery., • Performance & Observability: Gain hands-on experience with monitoring tools and learn how to build observable systems from day one., • Documentation & Developer Experience: Help create clear technical docs and reusable tooling that makes development smoother for everyone., • Cross-Functional Collaboration: Partner with product, design, and experienced engineers to break down work, estimate effectively, and deliver iteratively. Requirements • Experience: 3+ years of professional software engineering, including full-stack work on production systems (fintech or startup experience a plus)., • Java Proficiency: Hands-on experience building APIs/microservices in modern Java (Spring Boot or similar)., • TypeScript & Vue: Solid experience developing production-grade web apps with TypeScript and Vue/Nuxt., • Web Fundamentals: Good grasp of HTML/CSS, accessibility (WCAG), and secure web app design., • Databases & Messaging: Familiarity with PostgreSQL and at least one of Redis, Kafka, or SQS., • Testing Mindset: Comfortable writing and running tests; familiar with CI pipelines (GitHub Actions, GitLab CI)., • Cloud & Containers: Exposure to AWS or another cloud platform and Docker. (Kubernetes or ECS a plus.), • Growth Mindset: Curiosity to learn new technologies, seek feedback, and develop alongside experienced teammates. Bonus Skills • Interest in event-driven or distributed systems (Kafka, RabbitMQ, SQS)., • Exposure to DDD, CQRS, or hexagonal architectures., • Experience with observability tools (OpenTelemetry, Prometheus, Grafana)., • Familiarity with multi-tenant SaaS, RBAC, or performance tuning (JVM, SQL). Why Join Us? • Learn from experienced engineers: Work side-by-side with senior teammates who value teaching, pair programming, and open design discussions., • Accelerate your growth: Gain exposure to architecture, DevOps, security, and observability while contributing to production systems early on., • Impact: Shape a greenfield fintech platform with real business influence and visibility., • Collaboration: Join a supportive, high-performing team that values curiosity, innovation, and shared ownership., • Career Development: Clear progression opportunities as Firenze scales — move towards senior or specialist roles with mentorship and hands-on experience., • Competitive Salary (£50,000-£80,000) depending on experience, plus equity participation. You’ll be part of a hybrid team based in London or Manchester, combining the best of in-person collaboration with the flexibility of remote work. You’ll join a culture that values continuous learning, feedback, and building things the right way — not the fast way.

At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you’re ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. We champion the builders of tomorrow by providing the infrastructure, tools, services, programs and support for creation on one of the world’s fastest, most sustainable and consistently reliable public blockchain - XRPL. By supporting an open community of developers, they can advance the solutions and innovation needed to allow businesses, consumers, institutions and governments to fuel the engine of a new digital economy. We believe that realizing the Internet of Value hinges on how easily new technology works for more people, and how effectively we can change the way the world operates today. Ripple Custody is helping more people participate in the digital economy by providing enterprise grade custody solutions for large financial institutions and crypto native companies. We have a big vision and the ambition to match. We are seeking the same in engineering managers. You also see the huge potential of this crypto custody and have the entrepreneurial spirit and technical excellence to realize the vision we have. There is a lot of work to get there but we are committed to building out the best team to achieve this. We’re looking for a results oriented hands-on engineering leader to help manage and guide teams building core security features for Ripple Custody. WHAT YOU'LL DO • Provide technical and business leadership defining Ripple Custody’s long term strategy, ensuring flawless execution building secure software and systems that are scalable and reliable, • Own and deliver the roadmaps of multiple programs while driving technical and operational excellence across the engineering organization, • Mentor and guide the professional and technical development of your team, both managers and engineers, • Provide hands-on technical leadership, • Encourage and drive engineering best practices, • Collaborate with stakeholders across Ripple and the customer community at large, • Establish team objectives and quarterly plans in alignment with business and organizational goals, • Translate technical concepts into tailored content for different audiences including engineers, business and technical leaders, • Scale the team by attracting and mentoring great leaders and engineers at various levels of experienceWhat we're looking for, • 10+ years of hands-on software development leadership experience, managing managers and teams of engineers., • Solid leadership and communication skills., • Hands-on experience building highly secure, scalable distributed systems in modern technology stacks, • Experience with Agile development with a focus on robust software design, scalability and security., • Eagerness to work openly and collaboratively with a diverse team, with a positive attitude and a passion for sharing knowledge., • A technical subject matter expert who provides technical leadership and shares expertise with a growing team of engineers. Do Your Best Work • The opportunity to build in a fast-paced start-up environment with experienced industry leaders, • A learning environment where you can dive deep into the latest technologies and make an impact. A professional development budget to support other modes of learning., • Thrive in an environment where no matter what race, ethnicity, gender, origin, or culture they identify with, every employee is a respected, valued, and empowered part of the team., • In-office collaboration for moments that matter is important to our culture, and we give managers and teams the flexibility to decide which 10+ days a month they come in., • Bi-weekly all-company meeting - business updates and ask me anything style discussion with our Leadership Team, • Competitive salary, bonuses, and equity, • Competitive benefits that cover physical and mental healthcare, retirement, family forming, and family support, • Employee giving match, • R&R days so you can rest and recharge, • Generous wellness reimbursement and weekly onsite & virtual programming, • Generous vacation policy - work with your manager to take time off when you need it, • Industry-leading parental leave policies. Family planning benefits.

About ClearWatt ClearWatt is on a mission to make electric vehicle ownership transparent and accessible. Our platform combines real-world data, telematics, and proprietary analytics to deliver trusted insights into EV battery health, real-world range, and performance. We partner with car dealers, leasing companies, energy companies and consumers to help them understand the true condition of electric vehicles - unlocking confidence across the EV ecosystem. We’re scaling rapidly, building the UK’s most comprehensive EV data intelligence platform - spanning OBD diagnostics, API-based vehicle integrations, and real-time energy data streams. The Role We’re looking for a skilled Backend Developer with strong experience in C# and the .NET ecosystem to help us scale and evolve our core data and API infrastructure. You’ll play a central role in designing, building, and optimising services that power our EV testing, reporting, and data-sharing products. This role is primarily backend-focused, but familiarity with modern frontend frameworks (React/React Native/Next.js) is a bonus. Key Responsibilities • Develop and maintain robust, high-performance .NET 8+ APIs and services., • Work with Azure Functions, Blob Storage, Queues, and SQL/NoSQL databases to build scalable, event-driven systems., • Design and optimise APIs that serve our mobile and web products, including partner integrations., • Implement efficient RAG AI backend systems for introducing advanced LLM based features, • Collaborate with product managers, data engineers, and frontend developers to deliver new features end to end., • Write clean, maintainable, and well-tested code, following modern CI/CD practices (GitHub Actions)., • Contribute to architecture discussions around performance, scalability, and data integrity., • Help evolve our internal tools and services to support ClearWatt’s growing product suite. What We’re Looking For • 2+ years of professional experience with C# and .NET Core., • Experience building REST APIs or microservices at scale., • Familiarity with cloud-native design and Azure services., • Understanding of async programming, dependency injection, and distributed systems., • Strong grasp of database design and query optimisation (SQL and/or NoSQL)., • Comfortable working in a small, fast-paced team where you’ll have end-to-end ownership., • Passion for clean architecture, performance, and testable code., • Interest in the EV, sustainability, or data analytics space is a plus. Nice to Have • Experience with React / Next.js / React Native or TypeScript., • Experience integrating third-party APIs (OEM, OBD, or telematics data)., • Familiarity with data pipelines and event-driven design., • Understanding of CI/CD automation and GitHub Actions workflows. What We Offer • Competitive salary and equity options., • Hybrid working (London-based team with flexible hours)., • Work directly with founders and management on industry-defining technology., • Opportunity to shape the architecture of a platform at the forefront of EV intelligence., • A culture of autonomy, purpose, and impact - your work will be shipped, seen, and used.

This role is with one of Dex’s trusted Partner companies. We work closely with their teams to truly understand their culture, goals, and what they’re looking for, so we can match you with the right opportunity for your goals! If you’re interested, apply here, or head to the website, where you can sign up and speak to Dex. After your call, you'll be sent the full match details. We’ll help manage your applications, and find other great matches to work you'll love. The Opportunity Dex is partners with some of the world’s most prestigious quantitative trading firms and systematic hedge funds. These organizations operate at the absolute bleeding edge of technology, treating the global financial markets as a complex data science problem. They are deploying massive compute clusters and proprietary machine learning models to trade billions of dollars daily. If you're an engineer who cares about nanoseconds, cache locality, and architecting petabyte-scale infrastructure, this is the pinnacle of technical challenge. What You’ll Work On • Architect Low-Latency Infrastructure: Design and implement the critical path for trading execution, building order management systems and market connectivity layers where performance is measured in microseconds., • Scale Data Pipelines: Engineer elegant, distributed systems capable of ingesting and processing petabytes of market and alternative data, ensuring absolute consistency for research teams., • Operationalize Machine Learning: Bridge the gap between research and production by deploying complex ML models into live environments under strict latency constraints., • Optimize the Stack: Go "close to the metal" to optimize performance across networking, I/O, and compute layers, squeezing maximum efficiency out of hardware., • Build World-Class Observability: Create robust monitoring and telemetry systems to provide real-time insights into pipeline health, trading activity, and model behavior., • Work with the Best: Work side-by-side with world-class researchers and mathematicians to translate theoretical strategies into production-grade code. What You'll Have • Polyglot Mastery: Exceptional command of at least one major systems language (C++, Rust, Java) for low-latency components, or Python for data and ML workflows., • Distributed Systems Expertise: Deep experience building high-throughput, fault-tolerant systems using modern messaging standards (e.g., Kafka, ZeroMQ, NATS)., • Systems-Level Intuition: You are comfortable debugging and profiling at the OS level, understanding memory management, CPU architecture, and network stack optimization., • Data Infrastructure: Familiarity with the modern data stack, including time-series databases, object stores, and streaming frameworks like Apache Flink or Spark Streaming., • Engineering Rigor: You write clean, testable, and reliable code. You understand that in this environment, a system failure can cost millions in seconds., • Bonus - ML Engineering: Experience with model serving, feature stores, or integrating ML pipelines into live production systems is highly valued. (Note: Previous finance experience is not required). To be considered for this role and others like it apply directly, or sign up to Dex and we'll help find the work that matters to you!

About the Role My client are revolutionising a huge regulated industry through AI. They have built breakthrough AI technology to transform a $9 trillion global industry, and are looking for a hands-on Senior Python Engineer to grow their high level existing team! As a Senior Product Engineer, you will help to build the first AI system that can reason across millions of documents immediately. What You'll Do • Architect the backbone of a revolutionary system, • Pioneer breakthrough Performance Engineering, • Lead technical innovation, • 8+ years of Python Development experience, ideally experience in distributed systems, • Deep systems architecture experience, • Performance Engineering experience, • Technical Leadership experience, • Track record of building systems that handle millions of operations with sub second response times, • Background with AI/ML platforms, • Regulated industry experience What's On Offer • Competitive salary and a meaningful equity stake in a fast-growing company with huge potential., • Comprehensive health, dental, and vision insurance., • Flexible company holidays., • Hybrid work environment.