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Barrington James’s specialist Software & Electronics Division is currently searching for a Software Engineer on a full time permanent basis in West London, England. (This opportunity is hybrid with 3 days a week on site required) To be considered for this position: Essential: Hardware Integration, Python (NumPy, SciPy, Pandas, Matplotlib, Sklearn, PyTorch), Desirable: GUI (Tkinter, PySide), C++, Life Science experience (Optics, Lenses etc.) Responsibilities/Requirements • Develop and maintain Python-based software for scientific data processing, modelling, and analysis., • Design and build user-friendly interfaces and tools to support research and operational workflows., • Integrate software with laboratory hardware and instrumentation for data acquisition and control., • Collaborate with engineers and scientists to deliver R&D projects, troubleshoot issues, and support users., • Follow best practices in software development, including testing, version control, and documentation. If this role is of interest, please apply or email for more information.

💻 eDV Software Engineer - Mid-Lead Level - Security & Defence 📍 Location: London, Gloucester, or Manchester (Hybrid options available) 💰 Salary: £47,000 - £90,000 + clearance uplift + company bonuses + benefits 🟩 Clearance: Active eDV Clearance is essential Join one of the UK’s most impactful mission-led technology teams and work at the sharp end of national security. We’re working with a range of defence primes, specialist consultancies, and tech-first SMEs delivering cutting-edge software solutions to protect the UK’s critical assets. These roles are core to national security, working across projects in cyber defence, secure data systems, threat intelligence, and high-integrity platforms. You will need active enhanced DV to be successful. What you’ll do: • Design, develop, and maintain secure software systems that meet mission-critical demands, • Collaborate with multidisciplinary teams (DevOps, Data, Cyber, Architecture) to build robust, scalable tools, • Engage with clients and security stakeholders to ensure compliance and reliability, • Work across a modern tech stack in low-trust, high-sensitivity environments, • Contribute to systems architecture, testing, integration, and deployment Ideal Background: • Strong experience in modern programming languages (Python, Java, Typescript, JavaScript), • Familiarity with secure coding principles and systems engineering, • Experience with cloud platforms (AWS, Azure, GCP) and DevOps tooling is a bonus, • Comfortable working in agile, iterative environments, • Active DV clearance is essential, • A passion for mission-focused work and working in a collaborative, accountable team If you're a software engineer with active clearance, who thrives on purpose, complexity, and technical challenge, let's talk. Drop a message or email to apply - all conversations are confidential.

Software Engineer – Real‑Time Python Systems (Front Office) A leading global investment bank is growing a front‑office engineering team responsible for building and owning high‑performance, real‑time systems used directly in live environments. This role is firmly hands‑on and engineering‑driven. You’ll work on low‑latency, high‑throughput platforms that underpin pricing, eTrading, and market‑making workflows, with real ownership of core production infrastructure. The focus is on building robust, scalable systems rather than tooling or scripting. They’re looking for strong, switched‑on engineers who enjoy solving complex problems, working close to the end user, and taking responsibility for systems running at scale. What You’ll Be Working On • Designing, building, and supporting real‑time pricing, eTrading, and market‑making platforms, • Developing low‑latency, high‑throughput backend systems used in live production, • Owning and improving critical services and APIs with a focus on performance and reliability, • Collaborating closely with other engineers and stakeholders to deliver well‑engineered solutions, • Enhancing existing systems and contributing to the evolution of the wider platform What They’re Looking For • Strong, production‑grade Python experience (beyond scripting), • Solid understanding of data structures, algorithms, and system design, • Experience building and supporting backend systems in live environments, • Familiarity with APIs, databases, and distributed systems, • Finance or FX experience is helpful but not required - engineering ability comes first

Data Engineer - National Security London Up to £54,000 S/C Clearable Ready to work on data-driven solutions supporting complex, real-world challenges? We’re looking for a Data Engineer to join a high-performing team delivering advanced data capabilities across a variety of secure and mission-critical environments. What you’ll have the opportunity to do as a Data Engineer • Designing, building and maintaining robust data pipelines for processing and transforming data, • Working with both batch and streaming data across modern cloud-based platforms, • Collaborating closely with architects, analysts and wider engineering teams to deliver scalable data solutions, • Applying software engineering and DataOps best practices including testing, automation and CI/CD, • Engaging with stakeholders to understand business requirements and translate them into effective data solutions, • Contributing to Agile delivery through active participation and continuous improvement About the Candidate The right Data Engineer should have: • Proven experience working in a Data Engineering role within complex or data-rich environments, • Strong programming capability in Python, SQL or similar languages, • Experience working with cloud platforms and deploying data infrastructure, • Understanding of data modelling, orchestration, and secure data handling practices, • Ability to communicate effectively with both technical and non-technical stakeholders What’s in it for you? • Salary ranging from £45,000 to £54,000, • Hybrid working, • 25 days holiday per annum with flexibility options, • Comprehensive benefits package including healthcare and pension, • Structured career development with ongoing training and support To hear more about the Data Engineer role contact Daire McIlhatton at

Technical Lead – UK (Remote, Permanent) Overview Velocity Tech has partnered with a global digital consultancy specialising in data, AI, and modern software engineering, helping enterprise clients build scalable, high-impact digital products. With a strong reputation for solving complex technical challenges, they work with leading organisations to deliver AI-enabled solutions, modernise legacy systems, and build high-performance applications. Their teams are distributed globally and operate in a highly collaborative, engineering-led environment. The Role As a Technical Lead, you will play a key role in leading engineering teams and working closely with clients to translate business requirements into scalable, production-ready solutions. This is a hands-on leadership role where you’ll guide delivery, shape architecture, and ensure best practices across development, DevOps, and agile methodologies. Key Responsibilities • Lead and mentor engineering teams, providing both technical and line management leadership, • Own the successful delivery of projects, ensuring quality, scalability, and performance, • Work directly with clients to translate business requirements into technical solutions, • Identify and resolve risks or blockers early in the delivery lifecycle, • Drive best practices across software engineering, DevOps, and agile ways of working, • Contribute to architecture and design decisions, ensuring long-term maintainability, • Provide clear updates to stakeholders, supporting informed decision-making Key Skills & Experience • Strong background in software engineering, either as a Senior Engineer or Technical Lead, • Experience with JavaScript (Node.js/TypeScript) or Python-based environments, • Proven experience leading teams through end-to-end technical delivery, • Experience working directly with clients or stakeholders in a consultative environment, • Strong understanding of agile methodologies, design patterns, and best practices, • Experience with test-driven development and modern testing approaches, • Proficiency with version control tools (e.g. Git), • Solid understanding of cloud platforms (AWS, Azure, or GCP) and DevOps practices, • Awareness of operational concerns such as monitoring, performance, security, and compliance, • Strong communication skills with a collaborative, people-first approach

Mid-Level Platform Engineer (DevEx) – GCP, Kubernetes, Terraform, CI/CD, Python Oliver Bernard are currently seeking a strong, Mid-Level Platform Engineer (from a Software Engineering background) to join a client of ours on a digital transformation orientated project. Existing plans are focused on embracing Cloud Native, removing a lot of bespoke engineering from their environment, optimising processes, and advocating for DevEx / Dev enablement throughout. The existing Platform team consists of four engineers who work closely with engineering day to day, and are responsible for scaling their practices across Cloud, Containers, and IaC technologies, whilst driving best practices from a broader engineering perspective across Infrastructure. This is a remote first role, and requires the following hands-on experience to be considered: • Strong Cloud experience with GCP (at least 3-4 years), • Containerisation / Orchestration with Kubernetes (+ Helm), • IaC with Terraform, alongside Automation with Ansible, • Prior work across CI/CD, Monitoring and Observability, • Comfortable coding with an OO language (ideally Python or Java) This position is a remote first opening (with office visits only required quarterly for team days) and can offer £55-65K for the right profile. Mid-Level Platform Engineer (DevEx) – GCP, Kubernetes, Terraform, CI/CD, Python

The Role You'll join the Pharosyn team as an early hire — directly shaping the entire software stack. We are hiring founding engineers with different strengths; you are not expected to be senior across all three domains. AI Engineering -⁠ ⁠Prompt engineering and LLM orchestration -⁠ ⁠Building evaluation frameworks and feedback loops -⁠ ⁠Deploying and operating AI systems reliably in production Data Engineering -⁠ ⁠Ingesting data from heterogeneous sources (APIs, RSS, web scraping) -⁠ ⁠Data modelling, pipelines, and transformation -⁠ ⁠PostgreSQL, vector databases, and medallion-style layering (raw → cleaned → served) Enterprise Infrastructure -⁠ ⁠Multi-tenant SaaS architecture -⁠ ⁠Cloud deployment -⁠ ⁠Security, authentication flows, and production reliability You should demonstrate applied excellence in at least one of these areas, with demonstrated interest across multiple. Core Engineering Philosophy We care deeply about leverage as an engineering principle. We want you to help us build the system that builds the system: -⁠ ⁠The development environment, tooling, and workflows that let a small team move extremely fast without breaking production -⁠ ⁠Tight feedback loops between customer usage, observability, evaluation, and execution (tests, CI, code review) -⁠ ⁠Early architectural choices that scale to a $100m+ product with a lean team -⁠ ⁠Treating developer productivity, reliability, and iteration speed as first-class product concerns You Must -⁠ ⁠Have demonstrated ability to build and ship real products (e.g., shipped SaaS, production pipelines, open-source with users, meaningful side project, startup experience) - show us what you’ve made -⁠ ⁠Have strong core engineering fundamentals and the ability to learn new languages quickly (our current stack includes TypeScript/React, Python, and PostgreSQL) -⁠ ⁠Already use AI coding tools (e.g. Cursor, Claude Code, Copilot) to materially increase output -⁠ ⁠Thrive being given problems and architecting solutions, not waiting for project specs — you should be the best person you know at architecting brilliant solutions to customer problems -⁠ ⁠Bonus points for experience in healthcare, biotech or regulatory data We are primarily targeting exceptional early-career engineers and unusually strong senior engineers who want real ownership at the earliest stage What We Offer -⁠ ⁠£100–130k base salary as a baseline, with flexibility for candidates who bring exceptional depth in one of our core domains. For outstanding senior engineers with relevant experience building and deploying complex systems with enterprise customers, we are open to going meaningfully higher. -⁠ ⁠Meaningful equity — this is a true founding engineer role -⁠ ⁠Direct collaboration with the founders on product and strategy -⁠ ⁠Travel to the US to work onsite with enterprise clients -⁠ ⁠The chance to define the technical culture and architecture of the company from first principles Expectations This is an early-stage startup in a competitive market. The work is demanding and fast-moving: -⁠ ⁠High commitment - this is not a typical 9–6 role. The pace is intense and sustained effort is expected, especially around customer delivery and critical deadlines. -⁠ ⁠Present in the London office (in-person, not remote) -⁠ ⁠High autonomy, high accountability -⁠ ⁠Speed and quality - speed is essential, compromise when necessary but don’t hide behind speed as an excuse for poor quality Values -⁠ ⁠Operational excellence - Move fast, maintain high standards, and take responsibility for the outcome. -⁠ ⁠Ownership - If it’s in your orbit, you own it end-to-end. -⁠ ⁠Intellectual honesty - Say what you think, challenge ideas openly -⁠ ⁠Practical problem-solving - Find a way forward, use the right tools, and ask for help when needed. -⁠ ⁠Continual learning - Keep getting better, update your skills, and adapt as the problem space evolves and transfer those learnings into the product.

We’re working with a fast-growing technology consultancy that is building a strong reputation across the Energy & Commodities trading space, delivering modern engineering, AI, and data platforms for some of the most sophisticated trading environments globally. Following significant growth within their trading practice, they are looking to hire a Principal Software Engineer to lead complex, high-impact client engagements across data, AI, and software engineering initiatives. This is a senior, highly visible position combining hands-on technical leadership with architecture, stakeholder management, and strategic delivery. You’ll work directly with senior engineering leaders and business stakeholders to design and deliver greenfield platforms that support real-time trading operations, analytics, and decision-making. The role sits at the heart of large-scale transformation programmes focused on modern cloud-native engineering, distributed systems, streaming technologies, and advanced data platforms. Key areas include: • Real-time and event-driven systems, • Distributed data and software platforms, • Cloud-native engineering and architecture, • Streaming and intraday analytics platforms, • AI-enabled engineering solutions, • Modernisation of trading technology ecosystems This role would suit someone who enjoys operating as both a technical leader and trusted advisor , someone comfortable influencing architecture, mentoring engineers, engaging senior stakeholders, and driving delivery across complex programmes. Ideal background: • Strong software engineering experience with Python and modern cloud technologies, • Experience building scalable distributed systems and data platforms, • Strong understanding of streaming/event-driven architectures, • Previous exposure to Energy, Commodities, or Capital Markets environments, • Ability to operate confidently in client-facing and stakeholder-heavy environments Why it’s compelling: • Opportunity to lead greenfield engineering initiatives, • Blend of technical depth, architecture, and strategic influence, • Exposure to multiple large-scale trading programmes, • Fast-growing business with strong momentum in the market, • Highly collaborative, engineering-led culture, • Strong visibility and progression potential within the organisation This is an excellent opportunity for a senior engineer who wants to remain close to technology while stepping into a broader leadership role within one of the most technically interesting areas of the market.

About Circuit Mind Electronic circuit boards are at the core of current and future inventions - space travel, medical robotics, autonomous transportation, augmented reality, bio-engineering. Yet today designing an electronic circuit board is an extremely manual, long and tedious process. At Circuit Mind we believe that this is wrong and we are on a mission to fix it, triggering the future of hardware design. We are creating an entirely new software engine for circuit boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. As a Lead Software Engineer, you’ll create simple and elegant solutions to difficult technical problems that the world has not solved before. You will work in close collaboration with a highly-functioning team of software, electronics, algorithm engineers and product managers. Responsibilities • Collaborate with the product team and in-house hardware engineers to understand the problems of hardware engineering teams., • Plan, design, develop, test and iterate on the software solutions to those problems, accounting for functional and non-functional requirements., • Co-design, pair on, and review the development work of other lead software developers., • You’ll work on the entire company's backend code base: data models, algorithms, data pipelines, infrastructure, APIs, complex database queries, ML models. Qualifications We’re only considering exceptional candidates, with the following pre-requisites: • 5+ years of professional software development experience., • 2+ years of professional experience in Python., • 2+ years in a senior software engineer position., • Strong communication and team-work skills., • Experience working in an agile software development environment. Nice-to-haves • Experience in a tech lead position., • An interest in electronic engineering. Benefits • Collaboration with a friendly world-class team., • Above market rate salary and meaningful equity., • 25 days of annual holidays plus bank holidays., • Flexible working hours with two days a week in the office., • 5 weeks per year to work wherever you want in the world., • London Bridge office., • Extended parental leave., • Learning and development budget to support your professional development., • Yearly retreat., • Access to Circuit Mind's cutting edge EDA platform. Interview Process • Screening Interview, 20-30 min with Operations Manager Hour 2: Implement a new feature in a similar repository. • Final Interview, 120 min With Basilio (CTO and Co-founder) and Rob (Principal Full-stack Engineer). Deep dive into your experience with behavioral and experience-based questions., • Reference Checks: Two references that you provide will be contacted for feedback., • Offer: Based on successful completion of all stages. At Circuit Mind we value diversity and foster an inclusive environment. If you have an additional necessity or disability that requires accommodation, please let us know so we can adjust the interview process to your needs. We also ensure that Circuit Mind’s straight-forward and efficient hiring process respects your time.

Software Engineer – AI Startup – Up to 85k 🚀🧠 💰 Salary: £50,000 - £85,000 + meaningful equity 🏙️ Location: London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers. If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the product forward 💻 Be working end-to-end on both backend and frontend You’ll thrive in this role if you: ✅ Love building and shipping quickly ✅ Enjoy working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Software Engineer – AI Startup – Up to 85k 🚀🧠

Full Stack Engineer – AI Startup – Up to 85k 🚀🧠 💰 Salary: £60,000 - £85,000 + meaningful equity 🏙️ Location: London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers. If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the product forward 💻 Be working end-to-end on both backend and frontend You’ll thrive in this role if you: ✅ Love building and shipping quickly ✅ Enjoy working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Senior Full Stack Engineer – AI Startup – Up to 85k 🚀🧠

Job description The next wave of enterprise software won’t be dashboards or copilots. It will be Digital Workers, autonomous AI systems capable of executing complex workflows end-to-end. At causaLens, we are building the platform that enables enterprises to deploy these Digital Workers safely and at scale. Our Digital Worker Factory allows organizations to design, deploy, and manage AI agents that automate decision-making, analytics, and operational workflows across the enterprise. These systems are already being used by global companies including Johnson & Johnson, Syneos Health and Cisco to transform how work gets done. We are particularly focused on pharmaceutical and life sciences organizations, where AI is rapidly becoming the operating system for commercial analytics, forecasting, regulatory workflows, and medical intelligence. Backed by $50M+ in funding from Molten Ventures, Dorilton Capital, and IQ Capital, and supported by visionary investors including the CEO of Revolut, causaLens is scaling rapidly. Our team includes leading AI researchers, engineers, and scientists, almost 20% with PhDs. Here are 2 articles that define our culture: The Role We’re hiring a Lead AI Engineer to design and deliver enterprise-grade AI systems and digital workers in production. You’ll work closely with global organisations, embedding with clients to untangle complex workflows and translate them into reliable, scalable agentic systems—integrating models, data, and enterprise infrastructure into solutions that operate in real-world environments. Job requirements We’re looking for experienced lead engineers who can own end-to-end delivery ofvadvanced AI systems. You’ll work across LLMs, multi-agent coordination, retrieval andvreasoning, and enterprise data integration; driving the development of systems that automate workflows and execute real business tasks at scale. Our stack typically includes Python, modern LLM frameworks, orchestration tools, and cloud platforms such as AWS, GCP, or Azure. What you’ll bring • Deep, hands-on experience building and deploying production-grade AI systems using LLMs, RAG pipelines, MCPs, and agentic workflows, • Proven track record of leading complex, client-facing engagements with a forward-deployed mindset, partnering with both technical and business stakeholders, • Strong system design and architecture expertise, with the ability to translate ambiguous business challenges into scalable, reliable AI solutions, • Experience guiding technical projects, setting technical direction, and driving delivery to measurable outcomes, • Solid understanding of evaluation, reliability, and performance considerations in production AI systems What you’ll do • Work directly with enterprise clients to understand complex operational and analytical workflows, • Translate ambiguous business challenges into clear technical strategies and system designs, • Design scalable AI architectures and agentic systems combining LLMs, multi-agent orchestration, and knowledge retrieval, • Break down initiatives into structured engineering plans and drive execution across teams, • Lead technical delivery end-to-end, from architecture through production deployment and iteration Benefits We care about our people’s lives, both inside and outside of causaLens. Beyond the core benefits like competitive remuneration and a great work-life balance, we offer the following: • 25 days of paid holiday, plus bank holidays, • carry over/sell holiday options (up to 5 days), • Share options, • Pension scheme, • Core life cover for all employees, equivalent to 4x your annual basic salary, • Happy hours and team outings, • Referral bonus program, • Cycle to work scheme, • Friendly tech purchases, • Benefits to choose from, including Health/Dental Insurance, • Special Discounts, • Learning and development budget, • Work abroad days, • Office snacks and drinks Logistics • Recruiter Screen, • Hiring Manager / Team Interview (30 mins): Deep dive into past projects, recent, • codebases, • Take-Home Challenge (3 hours): Testing structured thinking and practical, • coding/problem-solving., • "Day 0" Onsite (Hammersmith): * 3 x 30-minute technical interviews.

Senior Fullstack Software Engineer (Signals Team) Location: London, UK (Hybrid) Department: Engineering Reports To: Engineering Manager Job Type: Full-Time About the Role We are looking for a Senior Fullstack Software Engineer to join our Signals Team, contributing to the development of secure, scalable applications that support digital identity and authentication services. You will work across the stack—from intuitive frontend interfaces to robust backend systems—collaborating with engineers, product managers, and designers to deliver impactful solutions. This role is ideal for engineers who take ownership of complex features end-to-end, influence technical direction, and help raise the engineering bar across the team. Signals Team Mission Accelerating global expansion with locally trusted identity verification solutions The Signals team builds and maintains critical identity verification capabilities that enable secure onboarding and regulatory compliance worldwide, including: • Proof of Address (PoA), • AML (Anti-Money Laundering) checks, • eKYC database integrations What You’ll Do • Lead the design, build, and evolution of fullstack applications using React (TypeScript), Kotlin, Python, and Ruby, • Architect and develop scalable APIs and microservices deployed on AWS, Azure, or GCP, • Take ownership of complex features from design through to production and ongoing operation, • Drive architectural discussions and contribute to long-term technical strategy, • Collaborate with cross-functional teams to deliver secure, privacy-compliant features aligned with regulations (e.g., GDPR, BIPA, CCPA), • Mentor engineers through code reviews, pairing, and technical guidance, • Improve system reliability, scalability, observability, and performance, • Partner with product and UX teams to deliver high-quality, user-centric experiences, • Champion secure coding practices and contribute to identity and cryptographic systems, • Identify and implement improvements to engineering practices, tools, and workflows Key Projects You’ll Support • Leading enhancements across identity verification and authentication products, • Driving the evolution of the Signals platform architecture, • Designing and maintaining SDKs and APIs for a consistent developer experience, • Scaling third-party integrations, • Integrating advanced security and identity features into Entrust’s identity platform What We’re Looking For Required Qualifications • 5+ years of professional experience in fullstack or software engineering, • Strong proficiency in React/TypeScript and at least one backend language (Python, Kotlin, or Ruby), • Proven experience designing and building distributed systems and scalable architectures, • Experience building and operating APIs and microservices in cloud environments (AWS, Azure, GCP), • Familiarity with containerization and orchestration (Docker, Kubernetes), • Strong understanding of system design, performance, and reliability trade-offs, • Deep knowledge of software security principles and privacy-by-design approaches, • Experience working in agile environments with CI/CD practices, • Strong communication skills with the ability to influence technical decisions, • Experience mentoring engineers and contributing to team growth Preferred Qualifications • Knowledge of identity protocols (OAuth 2.0, SAML, OpenID Connect), • Experience with frameworks such as Spring Boot or Ruby on Rails, • Understanding of privacy regulations and their technical implications, • Experience building secure SDKs or working on developer platforms Why Join Entrust? • Work on high-impact identity and security systems used globally, • Play a key role in driving geo-expansion and regulatory-compliant products, • Influence architecture and technical direction within the Signals platform, • Collaborate in a supportive, inclusive, and high-performing engineering culture, • Flexible working (hybrid/remote) to support work-life balance, • Strong investment in career growth, leadership, and learning London office: If you're based in our London, UK office, you'll follow a hybrid work model, which requires being in the office three days per week.

Senior Software Engineer | London | Hybrid | Tech for Good Location: London (hybrid) Salary: £80,000 to £95,000 + equity + benefits Tech stack: • Python (Django, Flask or FastAPI preferred), • React / TypeScript, • AWS We’re partnered with a mission driven company using technology to support large scale environmental and operational projects in the real world. Their platform sits at the centre of the business, enabling teams across multiple regions to coordinate work, standardise processes, and make better decisions at scale. You’ll own a significant area of the platform, understanding where current workflows begin to strain and designing pragmatic solutions that improve how the organisation operates day to day. This is an environment with genuine autonomy. Engineers are trusted to make decisions, influence direction, and deliver work end to end without layers of unnecessary process getting in the way. What you’ll be doing: • Owning and evolving a key product domain across the platform, • Designing scalable systems that solve operational and technical bottlenecks, • Working closely with stakeholders across different parts of the business, • Building software that has direct real world impact beyond the screen, • Contributing across the stack, with a stronger focus on backend engineering, • Helping shape engineering direction as the company continues to scale You’ll likely have: • Strong commercial software engineering experience in production environments, • Experience building full stack applications, particularly backend heavy systems, • Solid engineering fundamentals that translate across tools and languages, • The ability to communicate effectively with both technical and non technical stakeholders, • A pragmatic approach to problem solving and delivering value The current stack is centred around Python, React, and AWS, though the team care far more about strong engineering capability and product thinking than ticking every box technically. If you’d like to hear more, drop me a message at for a confidential chat. Senior Software Engineer | London | Hybrid | Tech for Good

Bleeding edge quant hedge fund client who operate technologically at the top of the market are currently seeking an experienced Python Software Engineer/Developer. In this high performance computing team, you will be responsible for building automated software solutions which are used across the trading business. It is expected the successful candidate will be an expert Python engineer with functional experience of how market connectivity works with the applications they are developing Strong colleague network within this environment to take your initial experience to an elite level. • Ideally Computer Science Degree or similar discipline, • Good commercial experience in Python Software Engineering, • Working in a scaled, performance based software environment building efficient, reliable/high-availability and fast applications, • An interest in learning Rust programming alongside Python, • Linux knowledge advantageous, • Strong interest in working for a top end, high performance software firm Great work environment, WFH/Hybrid opportunity. Excellent bonus culture for all and career scope. Salary can be £100,000-£200,000 plus huge bonus, market leading benefits too.

Principal Data Engineer £120,000 + 20% bonus Hybrid | London We're working with a global branded entertainment business, operating across multiple international markets, to find a Principal Data Engineer who will shape the future of their data estate. This is a genuine player-coach role at a pivotal moment. The business is mid-transformation, moving from a legacy environment to a modern, cloud-native platform built on Databricks and Azure. You'll define the architecture, drive execution, build the team, and set the technical culture from the ground up. You'll be the technical face of data to the business: sitting with senior stakeholders, translating complex trade-offs into plain language, and holding the line on what gets built right versus what gets fixed fast. Responsibilities as a Senior Data Engineer: • Define the directional architecture for the new data estate, including Lakehouse, Medallion and Eventing patterns on Databricks and Azure, • Lead discovery of the legacy estate: identify what to kill, what to keep, and how to migrate without breaking continuity, • Line manage, hire and develop the Data Engineering squad, setting technical standards and team culture, • Implement modern engineering hygiene: CI/CD, automated testing, observability and FinOps, • Partner with the Data Delivery Lead to balance tactical fixes against strategic build, • Represent the data function in setting organisation-wide standards for coding, security and DevOps Requirements: • 5 to 8 years in data engineering or data architecture, with at least 3 years in a leadership position, • Expert-level Databricks, Azure and SQL/Python, • Proven track record of refactoring legacy estates onto modern platforms without breaking things, • GCP and BigQuery experience is a strong advantage, • High EQ, comfortable presenting to leadership and managing non-technical stakeholders, • A software engineering mindset, not a scripting one Why apply: • Real architectural ownership from day one, not inherited decisions, • A mandate to build the team and culture around you, • Visibility at VP and leadership level across a major international business, • Hybrid working from London If you're a Principal Data Engineer who wants to lead something meaningful rather than maintain something inherited, this is worth a conversation. Apply below or reach out directly. Due to the high volume of applications, not all applicants will receive feedback.

AI Software Engineer • Onsite role in Soho, • £80-120k depending on experience We’re on a mission to reinvent how AI understands people — not through CVs or data points, but through story, reasoning, and curiosity. We’re building systems that listen, interpret, and understand why people say what they say. The goal? Create AI that perceives human potential, not just human input. If you love working on ideas that feel impossible — keep reading. The Role We’re looking for an engineer who blends technical depth with creative instinct. You’ll work directly with founders to shape the intelligence layer behind a new generation of human-aware AI — from LLM reasoning and semantic understanding to full-stack experiences that feel emotionally intelligent. If you’ve worked in a disruptive industry and built something brand new — not just improved what already existed — this will feel familiar. What You’ll Be Building • Core intelligence systems: LLM orchestration, semantic reasoning, and voice understanding, • Fast, intuitive interfaces that make human-AI interaction feel alive, • Rapid prototypes that turn bold ideas into working products, • Scalable infrastructure for experimentation and learning You’ll Thrive Here If You • Come from a disruptive, fast-moving environment, • Have helped launch or shape new ideas, products, or technologies, • Think in systems and build with elegance, • Believe speed drives creativity, • Are curious about human cognition and behaviour, • Value truth, craft, and collaboration over hierarchy What You Bring • Deep fluency in TypeScript and modern frameworks, • Experience with vector databases and embeddings, • Strength in LLM fine-tuning or multimodal reasoning, • Proven ability to ship full-stack products fast, • Strong Python skills, • Experience using Gemini would be preferred The Culture Just a small, ambitious team that debates hard, builds fast, and chases ideas that matter.

Platform Engineer Leading Technology-Driven Investment Firm London Up to £120,000 + Bonus/Benefits A leading technology-driven investment firm is seeking a Systems Specialist to join its infrastructure engineering team in London. This is an exceptional opportunity to contribute to the design, build, and operation of large-scale compute and storage environments that power a global trading platform. The successful candidate will be involved in every layer of the technology stack—from hardware and operating systems to automation and observability—while gaining exposure to how a world-class investment firm manages its technology infrastructure. Key Responsibilities • Manage a distributed compute environment and several petabyte-scale storage systems, • Install, configure, and monitor RHEL-based Linux environments, • Troubleshoot hardware and software issues across the stack, • Develop and maintain automation scripts and tools (Python, Ruby, or Bash), • Collaborate with internal teams and external vendors to resolve complex issues and improve systems reliability Required Qualifications • Up to 6 years of experience in a technology infrastructure or systems administration role, • Proficiency in Python, Ruby, or Bash scripting, • Bachelor’s degree in Engineering, Computer Science, or a related discipline Preferred Qualifications • Experience with modern software development practices (version control, agile methodologies), • Familiarity with infrastructure automation and configuration management tools (Chef, Puppet, or Ansible), • Exposure to distributed storage systems and related protocols, • Experience with observability and monitoring tools (Elasticsearch, Logstash, Kibana, Datadog, Prometheus, Grafana), • Strong written and verbal communication skills, • Demonstrated ability to learn quickly and adapt to evolving technologies, • Ability to work effectively in a fast-paced, collaborative environment

• Senior DevOps Engineer (AWS, microservices), • Up to £100,000 + performance related bonuses + benefits, • Hybrid-Remote in London (City) or Manchester Central | 3 days onsite We’re partnered with a global fintech infrastructure company operating at the core of financial services: the data control layer behind banks, asset managers, and trading institutions worldwide. Following a major acquisition the business is entering a significant scale phase, doubling headcount and investing heavily in its cloud and platform engineering capability This is high-scale, mission-critical infrastructure software, processing trillions in financial assets daily and ensuring the accuracy, reconciliation, and compliance of global financial data. Mission of the role: • Deliver scalable, automated, and production-ready platforms built on AWS with Kubernetes, Infrastructure-as-Code, and GitOps at the core, • 6 months into the role, you will have led a successful migration or go-live, have delivered measurable improvements in scalability and efficiency, and been recognised as a trusted authority in microservices delivery, • You will work in a wider Infrastructure / SRE / Cloud team of 15 What you’ll be doing • Design, build, and operate microservices platforms on AWS using Kubernetes (EKS/AKS), • Automate provisioning, deployments, and pipelines with Terraform, Helm, and CI/CD tools, • Lead technical delivery for customer projects, from discovery through to production go-live, • Migrate and scale services into microservices-based platforms with resilience and observability in mind, • Implement GitOps workflows (e.g. ArgoCD, Flux) to ensure automation and consistency, • Produce high-quality documentation, runbooks, and reusable modules to accelerate delivery, • Act as a senior technical authority, raising engineering standards and mentoring by example What we’re looking for Essential skills and experience: • Strong AWS cloud engineering background with Terraform / IaC, • Proven expertise in microservices design, deployment, and operations, • Hands-on Kubernetes orchestration (EKS/AKS), • Linux administration and scripting (Bash / PowerShell; Python desirable), • GitOps experience with Argo CD or Flux, • CI/CD pipeline development and automation, • Strong communication and problem-solving skills, • Track record of delivering service migrations and platform go-lives into production Nice to haves: • Helm chart authoring and advanced Argo CD usage, • Event-driven microservices (Kafka), • PostgreSQL in cloud environments, • Advanced CI/CD pipeline design, • Experience with Internal Developer Platforms (e.g. Backstage), • Multi-cloud exposure and/or Python development for tooling Why join • Work on large-scale, regulated financial data infrastructure used globally, • Major transformation phase following strategic acquisition and rapid scaling, • Opportunity to shape platform architecture during a key growth period, • Stable, PE-backed business with enterprise scale + modern cloud adoption

Based Hybrid in Central London commutable from Cambridge the Embedded Linux Kernel Engineer will be working on the development of a range of Embedded Software to host, monitor high speed networks. The Embedded Linux Engineer will be working with a company developing AI/ML Technologies for datacentres for a sustainable future. The company can sponsor, if required, but would prefer not to. Responsibilities will include Software architecture definition of Embedded Software Development within network interface technology. Additionally the role will include Linux PCIe driver development, which is an essential requirement as listed below, network control and working with prototype hardware to identify root cause issues. The successful candidate will have a good relevant degree with a strong commercial background in Linux Kernel Development, along with. • Hands on experience in embedded development ideally in a product development environment, • Strong experience working with PCie Please apply Directly to or call my mobile on 07762794331 via whats app.I am having issues with my LinkedIn so if you would like to know more please add me as a connection with any questions.

C++ Software Engineer | Proprietary Trading | Amsterdam Elevate Partners are partnered with a global leading prop trading firm currently seeking experienced C++ Software Engineers to join their high-performing technology team in Amsterdam. Technology sits at the core of the business, with proprietary systems driving millions of trading decisions daily across global markets. The successful candidate will join a highly collaborative engineering environment focused on building ultra-low latency, high-performance systems that directly impact trading performance. The engineering team develops software operating within the latency-critical layer of the firm’s trading infrastructure. This includes market connectivity, large-scale data handling, trading algorithms, execution systems, and advanced hardware integrations. Key Responsibilities • Design, develop, test, deploy, and maintain high-performance C++ applications within a low-latency trading environment, • Build scalable and reliable software solutions for trading, execution, and hardware development teams, • Work closely with traders, quantitative researchers, and engineers on end-to-end product development, • Gather business requirements and collaborate with key internal stakeholders to deliver innovative technical solutions, • Contribute to greenfield projects while taking ownership across the full software development lifecycle, • Balance performance, latency, scalability, maintainability, and reliability across complex distributed systems, • Operate within an agile engineering environment with advanced automated testing and continuous deployment practices Requirements • 5+ years’ professional software engineering experience post-graduation, • Strong commercial C++ development experience, ideally using modern C++ standards, • Experience working within Linux environments, • Familiarity with Python scripting, • Exposure to Docker and Kubernetes environments This is an excellent opportunity to join one of the most technically sophisticated proprietary trading environments globally, working on mission-critical systems alongside some of the strongest engineering and trading talent in the market.

Frontend Systems Engineer – DataGrid & Visualisation Libraries | London (Hybrid) £150,000 – £200,000 + package Most engineers build applications. This team builds the components those applications rely on. I’m hiring for a developer tools company building widely adopted JavaScript components used in data-intensive applications across global enterprises, financial institutions, and technology companies. This is core engineering work, focused on performance, scalability, and building systems that operate at the limits of the browser. What you’ll be working on • Developing and optimising a high-performance DataGrid and charting library used globally, • Solving complex problems around rendering, large datasets, and real-time updates, • Working across data structures, algorithms, and performance-critical code paths, • Contributing to both grid and visualisation components, • Building features end-to-end — from design through to release, • Shaping the direction of widely adopted developer tooling What they’re looking for • Strong JavaScript and TypeScript fundamentals (framework-agnostic mindset), • Experience with a statically typed language (C++, C#, Java, Python, etc.), • Deep understanding of algorithms, data structures, and software design, • Experience building complex systems — not just application-layer UI, • Familiarity with React, Angular, or Vue (and how they interact with the DOM), • Ability to reason about performance, memory usage, and rendering behaviour, • High standards for code quality, maintainability, and correctness Why this role stands out • You’ll work on core libraries used by thousands of engineering teams worldwide, • The problems are genuinely challenging — performance, scale, and architecture, • Engineering-led culture with a strong emphasis on quality and ownership, • Flat structure, minimal bureaucracy, and high autonomy, • Real impact on a product used in mission-critical environments Package • £150,000 – £200,000 base salary, • Private healthcare, pension, and additional benefits, • Hybrid working (London-based), • High-spec hardware and developer-focused environment If you enjoy solving technically challenging problems around algorithms, recursion, and performance, apply or get in touch for a confidential conversation.

All3 is transforming how buildings are conceived, developed, and delivered. We combine AI-powered design with robotic prefabrication and on-site assembly to build custom architecture at the cost and speed of mass production - unlocking even the most complex sites. We’re currently seeking a Principal Platform Software Engineer to join our team, focused on shaping the system architecture and delivering software that defines the mobility, manipulation, autonomy, and reliability of our robotic systems. Responsibilities: • Defining software architecture for robotic mobility, manipulation, autonomy, and platform tooling;, • Developing and maintaining production-grade software in Modern C++ and Python for embedded Linux environments;, • Designing APIs, abstractions, and reusable libraries that support reliable and scalable robotic systems;, • Building software for task and behaviour orchestration, including state machines, behaviour trees, mission planning, and fault handling;, • Developing tooling for visualisation, logging, telemetry, performance analysis, and debugging;, • Supporting distributed communication systems, message-passing middleware, and data marshalling pipelines;, • Integrating device drivers and middleware across heterogeneous compute architectures;, • Setting technical standards, reviewing designs, and making pragmatic trade-offs to meet business goals;, • Leading technical discussions across robotics, hardware, controls, and product teams;, • Applying systems engineering principles to requirements analysis, architecture design, verification, and validation. Expertise: • Expert-level experience in production-grade software development with Modern C++ and Python;, • Strong experience working in embedded Linux environments;, • Deep understanding of API design, software abstractions, and library development;, • Experience designing reliable and scalable software for industrial operating environments;, • Advanced experience in robotic software development, ideally in legged robotics;, • Knowledge of locomotion, whole-body control, or state estimation systems;, • Experience with distributed heterogeneous compute architectures, including GPGPU and CUDA;, • Strong understanding of pub/sub communication systems, telemetry, logging, and visualisation pipelines;, • Experience with task orchestration, behaviour trees, state machines, mission planning, or fault handling;, • Strong systems engineering knowledge, including requirements analysis, architecture design, verification, and validation;, • First-principles approach to problem-solving;, • Strong communication and technical leadership skills, with the ability to work across functional boundaries. We offer: • Chance to be a part of a large-scale project;, • Team driven by impactful cause;, • Hybrid format of work with the lab located in Park Royal;, • Private dental or full medical (dental treatments aren’t covered) insurance;, • Flexible working schedule;, • 28 days of annual leave.

Affinity Labs: Founding Product Engineer Location: London Area, United Kingdom · On-site Company Description At Affinity Labs, we’re building 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 rapidly building, launching, and scaling digital ventures alongside 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 tens of thousands of users at launch, and compound impact across multiple products, not just one. Role Description You’ll lead end-to-end product engineering across our portfolio: scoping features, designing APIs and data models, building backend services, and shipping polished user-facing experiences across web and mobile. This is an early-stage, hands-on role with significant autonomy and responsibility. You will own full-stack product delivery, from infrastructure and AI integrations through to React / React Native interfaces, collaborating closely with founders, creators, product, and design to turn lean specs into scalable, user-loved software. We’re looking for a strong generalist with backend depth and real mobile experience. Responsibilities • Implement features end-to-end (mobile + web frontend → APIs → data models → integrations) while maintaining quality and velocity., • Build React Native mobile apps and shared component systems across products., • Design and ship scalable backend services (APIs, integrations, AI workflows)., • Run tight build → test → iterate → ship loops; provide realistic estimates and surface blockers early., • Manage tech debt pragmatically, • Participate in daily standups and weekly planning; contribute to technical strategy and execute from Linear tickets., • Contribute meaningfully to product and architecture discussions; be heard in debate and align to unified decisions., • Own operability: CI/CD, monitoring/alerting, performance optimisation, safe rollbacks., • Build and integrate AI features (LLM/agent workflows, RAG/vector DB integration, eval hooks, cost/safety guardrails)., • Help evolve our reusable product templates and shared architecture across the portfolio. Essential Requirements • 3-6+ years building production-grade full-stack applications, with clear ownership., • Strong backend experience in Python (FastAPI preferred) and solid database skills (PostgreSQL/MongoDB)., • Proven experience building and shipping mobile apps with React Native., • Strong React fundamentals (Next.js experience a plus)., • Solid API design and systems thinking., • Familiarity with AWS serverless patterns and Docker; basic CI/CD concepts., • Comfortable with Redis (caching/sessions) and queue/messaging patterns., • Startup mindset: high ownership, comfort with ambiguity, bias toward shipping., • Growth mindset & flexibility: open to feedback; not rigid about stack/tools., • Clear communicator & collaborator; able to guide product decisions from engineering perspective., • Evidence of shipping quickly in small teams (links to apps, repos, case studies, live products). Desired • Node.js alongside Python for services or integrations., • App Store / Google Play release experience., • 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., • Frontend: React/Next.js, • Mobile: React Native, • 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). Competencies & Behaviours • Communicates clearly with technical and non-technical teammates., • Takes ownership from concept to deploy and through maintenance., • Thinks in systems + design for reuse across a portfolio., • 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.

Senior Software Engineer – AI Startup – Up to 160k 🚀🧠 💰 Salary: £70,000 - £160,000 + meaningful equity 🏙️ Location: London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the globe and is delivering high level impact to their customers. If you're highly ambitious and want to solve real-world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the product forward 💻 Be working end-to-end on both backend and frontend You’ll thrive in this role if you: ✅ Love building and shipping quickly ✅ Enjoy working closely with customers and value their needs ✅ Are excited by deep technical challenges and solving them simply, don't over complicate it ✅ Bring ideas and improvements to their engineering processes ✅ Are adaptable and comfortable working across their stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Senior Software Engineer – AI Startup – Up to 160k 🚀🧠

Lead Software Engineer Contract to Permanent Hybrid (London) Rates negotiable Most streaming platforms struggle to scale backend systems properly you’ve seen it. This role is about building the infrastructure that actually holds up under real-world production demand. Why This Role • Leading major media/streaming end client, • Real ownership of backend systems at scale, • Solving complex distributed systems problems in a high-traffic environment The Company / Product You’ll be working on a large-scale streaming platform powering millions of users, building and scaling backend systems that support critical services across the ecosystem. What You’ll Be Working On • Designing and delivering scalable APIs and microservices, • Building backend systems using Python + AWS (Lambda, API Gateway, S3, DynamoDB), • Handling event-driven architectures (Kafka, SNS/SQS, etc.), • Driving system design decisions across distributed systems, • Improving observability, reliability, and performance in production, • Debugging complex issues and leading resolution across teams, • Staying hands-on while setting technical direction and standards Tech Stack • Python, • AWS (Lambda, API Gateway, S3, DynamoDB, IAM), • Event-driven systems (Kafka, SNS/SQS), • CI/CD (Concourse, Git workflows), • Databases (Postgres, DynamoDB, Couchbase), • Observability (Prometheus, Grafana, CloudWatch) What You’ll Bring • Strong backend engineering experience (Python preferred), • Proven experience building distributed systems at scale, • Deep understanding of microservices + event-driven architecture, • Experience debugging complex production environments, • Ability to lead technically while staying hands-on Ideal Profiles • Senior Backend Engineers stepping into technical leadership, • Existing Tech Leads / Engineering Leads in high-scale environments No CV needed to start - just reach out and we’ll take it from there. If you want to move quickly, I can get you in front of the team this week.

Software Engineer Contract to Permanent Hybrid (London) Rates negotiable Most backend systems look fine on paper until they hit production. This role is about building services that actually work at scale, under real user demand. Why This Role • Leading major media/streaming end client, • Real production impact from day one, • Solving practical backend challenges in a high-scale environment The Company / Product You’ll be working on a large-scale platform used by millions, helping build and support backend services that power critical parts of a streaming ecosystem. What You’ll Be Working On • Building and supporting APIs and microservices in production, • Developing backend systems using Python + AWS (Lambda, API Gateway, S3, DynamoDB), • Working with event-driven systems (Kafka, SNS/SQS, etc.), • Supporting and improving existing production systems, • Debugging real-world issues and keeping systems stable at scale, • Collaborating within an existing team + codebase (pragmatic engineering) Tech Stack • Python, • AWS (Lambda, API Gateway, S3, DynamoDB, IAM), • Event-driven systems (Kafka, SNS/SQS), • Databases (Postgres, DynamoDB, Couchbase), • CI/CD (Concourse, Git workflows), • Observability (Prometheus, Grafana, CloudWatch) What You’ll Bring • Strong backend engineering experience (Python preferred), • Experience building and supporting microservices in production, • Good understanding of event-driven architectures, • Ability to debug and support live systems effectively, • Comfortable working in fast-moving teams with minimal hand-holding Ideal Profiles • Mid–Senior Backend Engineers with strong production exposure, • Engineers used to working in existing systems (not just greenfield) No CV needed to start just reach out and we’ll take it from there. If you want to move quickly, I can get you in front of the team this week.

Software Engineer Tech Stack: C#, .NET, Python, AI Development, SQL, Azure London - Onsite Salary Range: £70,000 - £90,000 Harrington Starr has partnered with a boutique Investment Bank, with decades of experience and exceptional performance. They are currently seeking to hire a Polyglot Engineer possessing strong experience developing front office applications and systems, written in C# and Python. If you have a deep interest working with modern technologies, building reliable business applications this could be the role for you. Responsibilities: • Design and develop new front office application utilising C#, .NET, Python, • Working on internal systems to maintain quality and standards, • Utilising historical data for analytics, automation and strategic decision making, • Integration of modern technologies and use of AI, • Daily interaction to quickly solve any issues for front office Benefits: • The ability to convert essential business needs and support front office functions, • Excellent base salary up to £90,000 based on experience and domain knowledge, • Exceptional bonus and benefits (health and dental care, life insurance), • Working flexibility Key Requirements: • BSc Computer Science or related Mathematical degree, • Excellent knowledge and experience developing with C#, .NET, Python, • Good experience developing front office systems, interacting with various stakeholders, • Excellent communication, • Strong commercial development experience with AI technologies, • Un-restricted right to work in the UK If you would like to book in a confidential phone call to discuss this opportunity in further detail, please apply below or send through a copy of your up-to-date CV via email to

Software Engineer - London £80k base + meaningful EMI equity About Revax Revax is building a new class of AI-native software for tax advisory teams. Today, advisers lose entire days to researching and drafting advice - fragmented knowledge, manual workflows, and brittle tooling. We turn a firm's own expertise into structured, transparent AI systems that draft, analyse, and explain deliverables with full traceability. We're a seed-stage startup backed by leading institutions and angels, already working with major firms. The team is small, technical, and shipping fast. The role We're hiring a Software Engineer to help scale Revax. You will work directly with the founders, owning features end-to-end across the stack, and helping to define how AI systems are built responsibly in regulated domains. Customer calls, prototyping, production hardening, and the work that lets us sell into leading firms - all of it is in scope. If you enjoy designing clean APIs, scaling services, and shipping products to paying enterprise customers, this role is for you. What you'll do • Model and optimise PostgreSQL / Supabase & graph db / Neo4j schemas for complex data, • Design and implement APIs in FastAPI for AI workflows and product features, • Build and scale LangGraph-based multi-agent systems with checkpointing, retries, and observability, • Integrate vector search, knowledge graphs, and retrieval pipelines into production services, • Deploy services on GCP (Cloud Run / GKE) and improve performance, reliability, and cost, • Implement the auth, IAM, audit, and access-control patterns enterprise customers expect, • Help deploy SSO, tenant isolation, auditability, and the security reviews that come with selling to major firms, • Work with customers, other engineers, and the founders to create best in class software Who we're looking for Essential • 2–3 years building production software used by real users, • Experience working in startups (1 year + of total experience), • Experience with LangGraph, RAG pipelines, vector databases, or knowledge graphs, • Production experience with FastAPI or a similar modern Python framework, • Experience scaling and operating services on GCP, AWS, or Azure, • A high-ownership mindset - you care about reliability, correctness, and outcomes, not lines of code, • Heavy use of modern AI coding tools (Cursor, Claude Code, Codex) Strong plus • Experience with any of; multi-tenant deployments for enterprise customers, VPC networking, Kubernetes, or shipping into procurement-heavy regulated buyers., • Exposure to Neo4j or graph-based data modelling, • Time spent on AI-native or agentic systems in production Nice to have • Exposure to professional services, finance, tax, or other regulated domains, • Strong instincts for developer experience and internal tooling The package • £80k base + meaningful EMI equity, • London-based, with a strong preference for in-office, • Visa sponsorship available, • Modern stack, and driven team that you can get have an impact in from day 1. If this sounds like you, please apply.

Forward Deployed AI Engineer | AI Consultancy 📍 London (Hybrid) 💰 Salary £120,000-£150,000 💷 £700-£900 per day 🏢 Permanent or Contract Role Overview We’re looking for a Forward Deployed AI Engineer to join a fast-growing AI consultancy working with leading organisations in areas such as capital markets and investment management. You will work directly with clients to design, build, and deliver production-grade AI systems, embedding into complex environments to solve real operational and data challenges. This role blends software engineering, AI system design, and client delivery, with a strong focus on scalable, production-ready solutions. What you’ll be doing • Build and evolve AI-driven origination and workflow platforms, including deal intake, pipeline management, relationship intelligence, approvals, and execution processes, • Design and implement microservices and APIs that integrate data across enterprise systems such as CRMs, internal platforms, and external data providers, • Translate complex financial and operational logic — including pipeline structures, attribution models, allocations, and reporting frameworks — into scalable technical systems, • Architect and optimise data models and database layers, including schema design, indexing strategies, query tuning, and stored procedures, • Develop and maintain CI/CD pipelines and engineering tooling to support reliable, frequent, and high-quality deployments, • Implement event-driven architectures using Kafka, enabling real-time data processing, system decoupling, and auditability, • Ensure high performance, reliability, and scalability across distributed systems, including observability, monitoring, and production readiness, • Partner with product, operations, and investment stakeholders to refine requirements and deliver iterative solutions in Agile environments Core requirements • 8+ years of hands-on software engineering experience across Python and object-oriented languages (Java or C++), • Strong background delivering production-grade full-stack or backend systems, • Deep understanding of cloud architecture (AWS, Azure, or GCP) with a focus on scalable and secure systems, • Strong proficiency in Python and SQL, plus experience with either Java or .NET, • Solid DevOps experience including Git, CI/CD pipelines, and containerisation (Docker, Jenkins or equivalent tools), • Proven experience designing and building microservices-based architectures in distributed systems, • Advanced knowledge of database systems, including schema design, performance tuning, and query optimisation, • Experience working with event-driven architectures and messaging systems such as Kafka, • Familiarity with both NoSQL and NewSQL databases, including trade-offs and use cases, • Ability to take ambiguous business requirements and turn them into clear technical designs and working systems AI Engineering capability (essential) All engineers in this team are expected to meaningfully apply AI in production systems, including: • Building and deploying LLM-based applications in production environments, • Designing agentic workflows and multi-step AI systems, • Implementing RAG (Retrieval-Augmented Generation) pipelines, • Working with OpenAI or Anthropic APIs, • Using vector databases and embedding-based search systems, • Applying prompt engineering techniques effectively, • Building AI evaluation, monitoring, and observability frameworks, • Understanding ML fundamentals where relevant (embeddings, fine-tuning, context engineering) Additional note The business is also interested in speaking with UK-based engineers for internal platform and AI product engineering roles. If you are more interested in building internal systems rather than client-facing delivery, you are still encouraged to apply.

Job title: Software Engineer Location: London We are currently working with an exciting space engineering company in London developing next-generation spacecraft technology and looking to add a Software Engineer to the team. About them: Our client are building advanced technology for real-world space applications, working on systems that are helping shape the future of the industry. They are growing rapidly and are looking for engineers who enjoy solving complex technical challenges within a fast-moving environment. Responsibilities: • Develop and maintain software for space-based systems, • Work across embedded, flight or mission software development, • Support system integration, testing and validation activities, • Collaborate with multidisciplinary engineering teams, • Contribute to the full software development lifecycle, • Support the development of mission-critical technologies Role requirements: • Experience within Software Engineering, • Strong programming experience with languages such as C++, Python or Rust, • Experience with embedded systems, real-time software or distributed systems is beneficial, • Understanding of software testing and validation processes, • Previous experience within space, aerospace or high-performance engineering environments is advantageous, • Strong problem-solving ability and collaborative mindset

numi have once again partnered with a leading player in alternative asset management is reshaping the treasury function. With cutting-edge technology and a seasoned team of industry experts, this company aims to reduce financing costs and optimize return metrics. Who We're Seeking: • We're on the lookout for a seasoned Associate to Mid-level Software Engineer with hands-on Python experience., • Familiarity with AWS Serverless and related technologies would be advantageous., • Strengths in Pandas, Polars, Pytest, Postgres, and CI/CD is essential., • If you're interested in Agile methodologies, and have a curiosity about DDD and Event-Driven architectures, you'd fit right in. What You'll Do: • Spearhead core capabilities for Client Onboarding Value Stream., • Bring to life our loosely-coupled event-based architectural vision., • Elevate user experiences and process-based outcomes., • Mentor junior team members and contribute to collective growth. Process: • Zoom call with the technical lead (60 mins): Discuss your career journey and skills., • Face-to-face session with the team (90 mins): Collaborate on an exercise, showcasing your skills and working style., • Zoom calls with the executive team (30 mins each): Explore industry insights and the company's role. Interviews are kicking off & we are shortlisting candidates for this position, if this sounds like something that would suit your experience. Apply now!

Senior Software Engineer (Python) | Hybrid/London | £85,000 + Equity High-growth InsurTech modernising how underwriting and risk decisions are made. This is a key hire as the business scales its core platform, with backend engineering and AI-enabled workflows central to how the product evolves. The role You’ll own and scale core backend services powering the platform, operating across the full product lifecycle. You’ll design and build high-performance Python services, while helping embed AI into real-world workflows across underwriting, risk processing, and automation. Alongside shipping at pace, you’ll contribute to architectural decisions across services, data models, and how AI is integrated into a production-grade system. Stack: Python, FastAPI, Pydantic, LangGraph, Claude, React, TypeScript, Terraform What you need • Strong experience building production Python backend systems, • Deep knowledge of FastAPI (or similar), async Python, and PostgreSQL, • Comfortable working across the stack when needed, • Cloud experience (AWS, Azure, or GCP) Please apply if you would like to learn more!

Principal Software Engineer 📍 London - Hybrid 💰 Up to £140k + bonus We're working with a profitable, engineering-led fintech that builds software used by investment firms to manage reporting, data, and client-facing outputs. Their platform underpins core workflows for their clients - handling complex, highly tailored requirements across data processing, reporting logic, and content generation. They’re now at a key stage of growth: evolving the existing system while building out new products alongside it. They’re looking for a Principal Engineer to take ownership of how that platform develops from here. This is a senior, hands-on position with real influence over both architecture and delivery. You’ll be: • Leading the evolution of a live, business-critical Python platform, • Designing and building new systems and features from the ground up, • Owning architectural decisions across backend services and cloud infrastructure, • Working closely with stakeholders to shape solutions, not just implement them, • Setting technical direction and raising engineering standards within a small team What They’re Looking For: • Strong Python experience (FastAPI, Django, Flask etc), • Track record of owning or significantly evolving production systems, • Experience making architectural decisions and working across the full lifecycle, • Comfortable operating in a smaller, high-ownership environment, • Able to communicate effectively with both technical and non-technical stakeholders Why It's interesting: • Ownership of a core platform and its future direction, • Worldwide travel insurance, • Top-tier Medical + Dental insurance, • Beautiful, modern office in Central London, • Profitable company with a clear growth roadmap

Graduate Software Engineer | Deep Tech Start-Up | London I am partnered with one of the UK’s most exciting deep-tech startups - a business already delivering cutting-edge technology to an exceptionally impressive client base, including some of the UK’s leading technology organisations. They are now looking to hire a Graduate Software Engineer to play a pivotal role in shaping both the product and engineering culture from the ground up. This is an opportunity to join a world-class founding team with a proven start-up pedigree, building genuinely innovative products at the forefront of advanced technology. You’ll have the chance to make a meaningful impact from day one, operating in a high-calibre environment with full technical ownership, fast decision-making, and zero unnecessary red tape or corporate layers. Responsibilities: • You’ll design and build core systems from scratch, • You’ll work across the stack to solve complex, high-impact security challenges, • You’ll collaborate directly with the founders on product direction and technical strategy, • You’ll take real ownership, with your decisions shaping the company’s future Key skillsets: • You have 0-2 years of commercial software development experience, • You demonstrate strong proficiency in one or more of: Python, C#, Java, or JavaScript, • You are an excellent problem-solver and communicator Nice to have: • Internship experience, • You have experience working within a start-up or collaborating closely with product teams/founders Benefits: • Competitive salary plus meaningful equity If you are attracted to a builder’s mindset and thrive in fast-moving, ambiguous environments, apply now with your updated CV immediately! Graduate Software Engineer | Deep Tech Start-Up | London

Software Engineer - Quantitative Finance 40+ top trading firms seeking exceptional engineers. Multiple immediate openings. What you'll do: • Build trading systems and market data infrastructure, • Develop quantitative research platforms and tools, • Optimize performance-critical financial applications Requirements: • 2+ years software engineering experience, • Strong C++/Python/Java skills, • Trading experience preferred but not essential Our network: • Pay: $150K-$800K+ based on experience, • Locations: London, Remote, • Focus: Trading platforms, risk systems, data infrastructure From high-growth prop firms to established systematic funds. Ready to engineer the markets? Apply now for confidential discussions.

Senior Software Engineer – Python, AWS, SQL Location: London - Hybrid (2 days per week on-site) Salary: Up to £100,000 Type: Permanent, Full-Time We’re partnering with an exciting, fast-growing technology business that’s tackling complex, real-world challenges with cutting-edge engineering. They’re now looking for a Senior Engineer (IC3) to play a key role in designing and delivering high-impact, cross-service features within a modern, distributed platform. What you’ll be doing: • Leading the design and delivery of complex, scalable systems across multiple services, • Making pragmatic architectural decisions in a fast-moving environment, • Driving engineering excellence across testing, security, and observability, • Owning services in production – improving reliability, performance, and resilience, • Mentoring engineers and elevating team capability, • Collaborating cross-functionally with Product, Data, and Design What they’re looking for: • Strong experience designing scalable, maintainable systems with clear ownership boundaries, • Proven ability to lead delivery across ambiguous, complex problem spaces, • Deep understanding of reliability, observability, and production systems, • A security-first mindset with experience mitigating risks and vulnerabilities, • Excellent communication skills with the ability to influence and mentor, • Python Experience is preferred - though experience with similar languages are a plus e.g. Clojure, Rust, Kotlin, Scala, Golang., • AWS Experience (Hands-on work with GCP/Azure is okay too), • BSc in Computer Science Why this role stands out: • High ownership and autonomy in shaping technical direction, • Opportunity to work on meaningful, technically challenging problems, • A strong engineering culture focused on quality, delivery, and continuous improvement, • Clear impact on product performance, scalability, and team growth

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site You will be joining a private equity firm as a senior software engineer, to work across the following responsibilities: • Develop and support P&L, accounting, and returns-calculation applications across trading books, • Build and extend our Client Reporting Framework, • Add instrument and asset class coverage in our Trade Repository system, • Manage data exchange with third-party vendors via SFTP and AWS S3, • Use AI coding assistants (Claude, Cursor, GitHub Copilot) to compress delivery timelines while maintaining full code ownership and quality accountability, • Collaborate with quant researchers and traders to translate complex financial requirements into auditable, production-grade code, • 8+ years commercial experience in Python or Java across the full development lifecycle, • 5+ years in financial services (buy-side strongly preferred), • Solid relational database skills; MS SQL Server a strong plus, • Snowflake experience required, • Familiarity with AWS (S3, Lambda, EC2, Glue or similar), • Proficiency with Git, CI/CD pipelines, and observability tooling (e.g. Datadog)AI & Tooling:, • Proven, hands-on experience shipping production code using AI coding assistants such as Claude, Cursor, or GitHub Copilot, • Demonstrable examples where AI tooling reduced delivery time by 2x or more on a meaningful task, • Strong prompt engineering skills and the ability to critically evaluate AI-generated code for correctness, security, and financial accuracyDesirable, but no essential:, • Experience with Apache Airflow or similar workflow schedulers, • REST or GraphQL API design experience, • Knowledge of fixed income, FX, or derivatives products and associated P&L/risk methodologies

Generative Engineering is bringing AI design into the real world by enabling generative engineering design for physical products. Our focus is creating millions more engineers globally and giving them the data and knowledge necessary to make efficient decisions quickly, one of the main challenges of the physical engineering industry today. Our team has a background in scaling software to millions of users and successfully disrupting industries, creating Unicorn's and Decacorn's along the way. We combine the advantages of an early-stage start-up with the ability to focus on creating high-quality, high-impact systems, without the distraction of fundraising. We're looking for a Simulation Engineer to sit between our platform and our customers — using CAD, CFD, and FEA alongside the tools we're building to help real engineering teams solve hard physical problems. One day you're running simulations on a customer's geometry; the next, you're building a custom workflow on the platform. If you love CAE but get fired up by software that multiplies what one engineer can do, this role is for you. Must Haves • Any depth of FDE, applications engineering, or simulation consulting experience — we don’t care how many years you’ve been working. If your work is great, your judgment is sharp, and you can apply properly, you’ve got an interview., • Hands-on experience with at least one major CAD package (SolidWorks, NX, CATIA, Creo, Fusion 360, Onshape, etc.), • Strong CFD experience in production tools (Ansys Fluent, STAR-CCM+, OpenFOAM, Simcenter, etc.) — you’ve meshed ugly geometry, debugged solver convergence, and explained results to non-experts., • Strong FEA experience (Ansys Mechanical, Abaqus, LS-DYNA, Nastran, Simulia, etc.) — structural, thermal, modal, nonlinear; we don’t mind which, as long as you really know it., • A customer-facing instinct: you can sit with an engineering team, understand what they actually need (not just what they asked for), and translate that into a working solution. Nice to Have • A degree in Mechanical, Aerospace, or a related engineering discipline —, • Multiphysics or coupled simulation experience (FSI, conjugate heat transfer, electromagnetics, acoustics, etc.)., • Generative design / topology optimization experience (nTopology, Altair Inspire, Fusion Generative, etc.)., • Scripting against simulation tools via their APIs (Ansys ACT, Abaqus Python, OpenFOAM dictionaries, Simcenter Java macros, etc.)., • Meshing wizardry — Pointwise, Fidelity, ANSA, or whatever lets you tame nasty CAD., • HPC experience — running solvers on clusters, Slurm, AWS ParallelCluster, or similar., • Scientific Python: NumPy, SciPy, pandas, PyVista, meshio, trimesh., • Docker, AWS, and general comfort moving between cloud and desktop engineering tools., • Open-source contributions, especially in CAE / simulation / geometry., • Experience presenting technical results to non-technical stakeholders — execs, procurement, product managers., • Just state the word ‘Salmon’ anywhere in your application, just to prove you can read a job advert., • Comfort with Python — enough to script, automate, and build glue between simulation tools and our platform. We aim to improve all our colleagues’ abilities and careers by exposing them to the bare bones of a tech start-up whilst giving them the opportunity to support the company in any way. If our people continuously improve, so does our product.

Firmware Engineer West London (Hybrid – 3 days onsite) Up to £65,000 + benefits Our client is an innovative and growing engineering-led organisation operating within the Consumer Electronics / Mobility sector. They are seeking a Firmware Engineer to join their team and play a key role in developing embedded software for next-generation products. This is an exciting opportunity to work across the full product lifecycle, from early-stage prototyping through to production and manufacturing, within a collaborative and forward-thinking environment. Key Responsibilities • Develop clean, efficient, and scalable embedded software in C/C++, • Work closely with hardware engineers on board bring-up, debugging, and validation activities, • Design, implement, and maintain firmware for embedded systems, including motor control, sensor integration, and low-level drivers, • Troubleshoot and resolve complex issues related to real-time performance, timing, and signal integrity, • Contribute to system architecture, coding standards, and long-term platform strategy Candidate Profile Our client is looking for a motivated and proactive engineer with a strong background in embedded systems and a passion for solving complex technical challenges. Essential skills and experience: • Proven experience in embedded software development, • Strong programming skills in C and C++, • Experience across the software development lifecycle (requirements, design, implementation, testing), • Hands-on experience with embedded communication protocols such as BLE, CAN, I2C, UART, or SPI, • Ability to work independently as well as collaboratively within a multidisciplinary team Desirable experience: • Knowledge of functional safety standards (e.g. ISO 13849 or ISO 26262), • Experience with electric motors or inverter-driven systems would be highly advantageous, • Familiarity with RTOS-based development, • Experience using Python for tooling or automation, • Exposure to CI/CD environments (e.g. Jenkins, Docker), • Experience with version control systems such as Git What’s on Offer • Competitive salary of up to £65,000 plus a performance-related bonus, • Pension scheme, • 25 days annual leave plus public holidays, • Flexible working arrangements, including a compressed working schedule option, • Access to learning and development resources, • Health and wellbeing support, including confidential counselling services, • Regular social events and team activities, • Employee discounts and additional benefits Sound like you? Apply now!

Junior AI / Automation Engineer London We are working with a highly entrepreneurial investment group in London. They are looking for a junior / early-career AI and automation-focused hire to help create internal tools, streamline workflows, and support the team with practical AI-enabled solutions from a relatively blank sheet of paper. This is not a pure academic data science role, and it is not a standard corporate graduate seat. The opportunity is much more about ownership, practical build work, and helping shape how a lean team uses AI and automation from the outset. The role is likely to suit someone who enjoys building useful things, working closely with stakeholders, and applying AI in a practical business setting. What you’ll be doing: • Building internal tools and lightweight platforms to improve workflow efficiency, • Supporting automation across reporting, document handling, internal processes, and knowledge workflows, • Working with AI / LLM-based solutions to solve practical business problems, • Helping create bespoke internal systems rather than relying solely on off-the-shelf software, • Collaborating closely with senior stakeholders in a lean, commercially focused team What they’re looking for: • Early-career profile, likely graduate to c.1–3 years’ experience, • Strong hands-on ability with Python and practical software / automation tooling, • Interest in AI, LLMs, workflow automation, and internal tool-building, • Builder mentality — someone who enjoys creating, testing, and improving things, • Comfortable working in a more entrepreneurial, less structured environment, • Strong academic background preferred Useful experience may include: • FastAPI, React, TypeScript, Streamlit, APIs, • LLMs, RAG, agentic workflows, automation tools, • Internal tools, dashboards, workflow systems, CRM-type platforms, • AI-enabled process improvement or business automation This is a particularly strong opportunity for someone who wants genuine ownership early in their career and enjoys building practical solutions that have visible commercial impact. If this sounds of interest, please apply or get in touch directly.

🌍 Lead Python Developer – Climate Tech 👥 Non-Profit | Major Philanthropic Backing | Real Engineering Problems 📍 London (Hybrid, 3 days per week) 🔧 Python, FastAPI, PostgreSQL, GCP, Docker I'm working with a fast-growing climate-tech non-profit tackling one of the most important infrastructure challenges in the energy transition. Backed by some of the biggest names in climate philanthropy, this is a organisation doing real work - not reports, not consultancy, actual software that shapes energy investment decisions globally. They're hiring a Lead Backend Engineer to lead a small squad, own the technical direction and get stuck into some genuinely interesting engineering. Think computational complexity, mathematical optimisation, and performance challenges at scale - a long way from your average API job. ⚡ Requirements: • 7+ years experience developing and maintain scalable Python/FastAPI back-end services, • Ideally worked with high-performance APIs for complex hierarchical data queries and grid modelling computations, • Managed and optimised GCP cloud infrastructure, implementing CI/CD pipelines and infrastructure-as-code, • Lead technical planning by breaking down roadmap items into scoped engineering work, driving ADRs and setting standards for code quality, testing, and API design, • Collaborate cross-functionally with front-end, data engineering, modelling and product teams to deliver reliable, impactful features, • Line-manage a team of 3–5 engineers through 1:1s, career development, performance reviews, and acting as the first escalation point for technical blockers If this sounds like something you'd want to hear more about, apply below!

Senior Software Engineer – C++ We’re looking for a talented Senior Software Engineer to take technical ownership of software designs from early specification through to fully verified delivery. This is a senior, hands‑on role for someone who enjoys building high‑quality software, mentoring others, and influencing real engineering outcomes. You’ll bring expert knowledge of software design, test, and verification, contributing to both new product development and the ongoing enhancement of existing systems. What You’ll Be Doing • Owning software designs from initial specification through implementation, testing, and verification, • Developing high‑quality software for new and innovative products, • Maintaining and enhancing existing software to meet evolving commercial and technical needs, • Applying best‑practice software engineering throughout the full development lifecycle, • Supporting and advising less experienced engineers, acting as a role model within the team, • Liaising technically with customers, suppliers, and collaborators on software‑related matters, • Contributing to wider project activities as required What We’re Looking For • Excellent, proven experience with C++, • Strong understanding of the full software development lifecycle, • Confident user of Microsoft Visual Studio (2022 / 2026), • Clear, effective communicator with strong written and verbal English, • Degree in a relevant technical subject Nice to Have • Experience with GUI/UX or Human–Computer Interaction (HCI), • Knowledge of scripting languages such as Python or PowerShell, • Background working on complex or engineered products

Applied AI Engineer | London 🚀 One of the fastest moving AI startups in London, backed by some of the world’s top VCs and founded by real entrepreneurs with multiple exits 💸 This is a rare chance to join at an early stage and build at the absolute frontier of applied AI, working directly with the founders on a product already used by global enterprise customers 🔥 Why this is exciting • Build and ship production AI systems including RAG pipelines and AI agents, • Work end to end across backend, infrastructure and AI, • Shape architecture, engineering standards and culture from day one, • Huge ownership and real impact 🧠 What you need • 5+ Years professional software experience (Python), • Excellent Educational Background (BSc, MSc, PhD - 2.1 or higher), • Hands-on experience building and deploying AI applications, • Comfortable moving fast in high ambiguity environments, • Genuine passion for building products that scale 🎁 What is on offer • Very competitive salary + meaningful equity, • Direct access to truly entrepreneurial founders, • A defining role at one of London’s most ambitious startups Challenging and intense, but tons of fun 🙌 Apply here, or pop your CV to to find out more!

🚀 Contract Role: AI / Data / ML Prototype Engineer (Rapid PoC Builder) We are seeking a highly autonomous contractor who thrives on turning loosely defined ideas into working solutions quickly. This role is focused on rapid experimentation, validation, and prototyping—not long delivery cycles. The goal is simple: determine quickly whether an idea is viable and worth scaling. 🧩 The Role You will take early-stage concepts and independently build end-to-end proofs of concept (PoCs), combining data engineering, machine learning, and lightweight application development. Where a PoC shows promise, you will extend it into a functional prototype aligned to real business needs. You will work with minimal guidance, move fast, and communicate findings clearly to stakeholders. ⚙️ Key Responsibilities • Build PoCs from loosely defined ideas within 2–3 days, • Design and implement end-to-end experimental solutions (data → model → output), • Combine data engineering, analytics, and ML to test feasibility quickly, • Develop lightweight prototypes (APIs, notebooks, dashboards, simple UIs), • Translate business ideas into technical approaches independently, • Iterate rapidly based on feedback and refine working solutions, • Integrate data from APIs, SQL sources, and cloud platforms, • Apply ML/NLP techniques where relevant to validate concepts, • Clearly document and communicate outcomes, assumptions, and limitations, • Strong ability to turn ideas into working software quickly, • Hands-on Python experience (data processing, prototyping, ML), • Strong SQL and data engineering skills (APIs, pipelines, cloud data), • Experience building end-to-end prototypes, not just models, • Understanding of ML fundamentals (feature engineering, evaluation, etc.), • Ability to work in ambiguous, fast-moving environments, • Experience integrating LLMs or AI services into applications, • Familiarity with modern data platforms (e.g., Snowflake), • Experience with visualization tools (Tableau, Plotly, etc.), • You can go from idea → working PoC in 2–3 days, • You can evolve PoC → usable prototype in 2–3 weeks, • You help teams make fast, evidence-based decisions, • You prioritise practical outcomes over perfect engineering

Senior Python Engineer | Full Stack | Real-time Data Platform 3 days onsite (nr Oxford) every 6 weeks This is a backend-led full stack role at an early stage technology company building a production grade SaaS platform for real-time data systems and analytics at scale. This is product engineering, not data pipeline work. You will be building customer facing software that runs in production and is used daily by real users. The team is growing fast and the scope is broadening. You will work on customer driven features and also contribute directly to the core platform as the business accelerates through its next phase of growth. You will work primarily in Python, reaching into React on the frontend and working across AWS to ship and support full features end to end. What you will be doing Building backend services and APIs in Python that power customer facing product features Working into React on the frontend to complete features across the stack Using AWS to deploy, support, and evolve production capabilities Contributing to the core platform as the product matures, not just the features built on top of it Collaborating with architecture and platform teams to maintain coherence and quality at pace Taking ownership of reliability, performance, and maintainability in a live SaaS environment What we are looking for 5 or more years building production SaaS systems as a Software Engineer, with a backend focus Strong Python fundamentals with real production experience in a SaaS context Working ability in React or frontend development more broadly Cloud experience, ideally AWS Comfortable in early stage environments where ownership is high and things move fast A production first mindset with a strong sense of software quality Nice to haves Experience in data intensive or real-time systems Exposure to API driven architectures and event driven patterns Previous work on multi-tenant SaaS platforms Salary: £70,000 to £80,000 plus benefits No sponsorship available. Applicants must already be based in the UK and eligible for SC security clearance (min of 5 years working in the UK) Interested? Drop me a message and I will share more context on the business and the platform.

Senior Software Engineer Are you a developer who loves building products, not just features? Do you thrive at the intersection of robust backend logic, intuitive frontend interfaces, and conversational AI? Are you excited to join a fast-growing, seed-funded startup transforming construction procurement? If you want to own a product from the database to the UI, we’d love to hear from you. About Us At Prolo, we’re reinventing procurement for the construction industry using AI. Our platform helps customers source materials effortlessly across WhatsApp, email, and phone—saving time and money with zero setup. We’re a small, ambitious team of 10 that moves fast, trusts each other, and enjoys building genuinely impactful technology. Your Role As a Senior Software Engineer you won’t just be ticket-crunching. You will own the end-to-end experience of our platform. You’ll be responsible for architecting scalable backend services that power our AI engine while ensuring the frontend experience is world-class. You’ll: • Build & Own: Lead the development of new features across the entire stack (Node/Python, React, and Postgres)., • AI Integration: Design and build the interfaces and APIs that allow our users to interact seamlessly with LLMs and conversational agents., • Product Thinking: Work directly with the founders to define the roadmap and turn customer insights into production-ready features., • Workflow Optimization: Support our AI-led procurement engine with high-quality data integration and scalable workflows., • User Experience: Ensure our chat and workflow interfaces are intuitive, fast, and reliable for real-world users in the field., • Scale: Help shape our engineering culture and technical architecture from the ground up as we grow. What We’re Looking For • The Full Stack: Strong experience with modern frontend frameworks (React) and backend environments (Node.js, Python, or similar)., • Startup DNA: You are comfortable in a fast-moving, seed-stage environment where you often have to figure things out from scratch., • Product Mindset: You care about why we are building something, not just how. You are user-focused and commercially aware., • AI Curiosity: Deep interest in LLMs and conversational products; experience with AI APIs is a significant plus., • Ownership: You take pride in shipping high-quality, tested code and seeing it deliver value to customers. What’s in It for You? • Equity: Become a true stakeholder in Prolo’s success., • Impact: Real ownership over a core product that construction firms rely on daily., • Tech: Work on cutting-edge conversational AI technology., • Location: Join us in our Marylebone office with a flexible hybrid rhythm., • Culture: A high-trust environment that values pace, transparency, and impact. Apply today and help us build the future of construction at Prolo. Prolo Ltd is committed to creating an inclusive and diverse workplace. We welcome applicants from all backgrounds No Agencies!

The pitch. It’s a serious engineering role with a great team – and meaningful responsibility. This is not a narrow “ticket-closing” developer job. You won’t be handed tightly scoped Jira tasks inside a heavily layered team structure. You won’t be maintaining a disposable MVP. And you won’t be managing people. Instead, you’ll be working on the core platform that underpins Outsmart’s crowdsourcing operations – a mature, revenue-generating system that has evolved over years and continues to scale. If you enjoy owning real systems, thinking architecturally, improving legacy code thoughtfully rather than rewriting it, and being trusted to deliver without heavy supervision, this role will feel unusually well-matched. The role As Senior Fullstack Software Engineer, you will help design, build and maintain the production systems that power Outsmart’s platform. You’ll work closely with our CTO, operating as a high-agency individual contributor with genuine ownership across backend systems, infrastructure and platform evolution. This is a role for someone who wants to: • Work on real, live systems with meaningful operational responsibility, • Make architectural decisions, not just implement them, • Improve and extend an existing platform with care and judgement, • Help shape the engineering foundations for the next stage of company growth You will be trusted to take product and operational requirements and translate them into robust, production-ready solutions. What you’ll be doing • Designing and maintaining backend services primarily in Python, • Developing and evolving well-structured RESTful APIs, • Designing and improving data models across relational (e.g. PostgreSQL) and NoSQL databases, • Working across the stack where needed, including JavaScript, modern HTML/CSS, and utility frameworks such as Tailwind, • Contributing to cloud-based infrastructure (e.g. Google Cloud), deployment pipelines and DevOps practices, • Debugging live production issues with a calm, root-cause mindset, • Incrementally improving system architecture using sound design principles (including modular design, DDD-style thinking, and pragmatic architectural patterns), • Reviewing code, raising standards constructively, and contributing to a disciplined engineering culture, • Leveraging modern tooling (including AI-assisted development) to improve quality and velocity This is not greenfield experimentation. It is thoughtful, high-quality engineering on systems that matter. The environment We are a small, intellectually serious company. That has advantages and responsibilities. You will: • Speak directly with senior decision-makers when needed, • Operate without perfect documentation, • Balance speed with long-term maintainability This role suits someone comfortable with autonomy, accountability and cross-functional collaboration. Who this role is for This role is designed for someone who is: • 8–15 years into their engineering career, • Has worked in a small company (c. 5–30 people) or similarly lean environment without heavy process, • Experienced in inheriting and improving mature systems, • Comfortable reading and navigating complex legacy code, • Strong in systems thinking (trade-offs, scalability, cost implications), • Backend-heavy, with strong Python expertise, • Operationally mature – you’ve supported production systems, not just built features You are likely: • Calm under pressure, • Direct but not ego-driven, • Curious and thoughtful rather than dogmatic, • Comfortable challenging ideas constructively If you primarily identify as a manager, a greenfield-only builder, or someone who prefers heavy structure and layered sign-off, this role is unlikely to be a good fit. Practicalities Schedule: Monday to Friday Weekends: No Location: UK-based Working style: Hybrid (remote and London office) Why Outsmart Insight? Outsmart Insight operates at the intersection of technology, intelligence and large-scale coordination. Our internal platform powers a global network and supports complex, high-trust client engagements. We are deliberately serious about quality, reliability and long-term thinking. As we grow, we are investing in strengthening our engineering foundations – building systems that are robust, scalable and thoughtfully designed. If you want to work somewhere where your engineering judgement genuinely matters, this is that opportunity. Our values • Smart minds, working together, • Quality delivered every time, • Strong client relationships built on trust, • Hard work, rewarded, • A happy, healthy team Apply Send a short cover letter and a two-page CV to , outlining why this role, and this type of engineering work, appeals to you. Please note: only applications sent directly to this email address will be considered.