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MUST BE BASED IN THE UK TO BE ELIGIBLE.Are you an experienced Full-stack Engineer seeking new and exciting opportunities? While we may not have an immediate vacancy, we’re always on the lookout for talented individuals to join our Talent Pool.GSK is a science-led global healthcare company with a

Senior Software Engineer – YC-Backed AI Startup.K–£160K + significant equity (projected 20x growth).I'm working with a hyper-growth, YC-backed startup that raised significant Series A funding – one of the largest in tech history.Founded by proven entrepreneurs with multiple successful exits,

Senior Full Stack Engineer – AI Startup – Up to 85k 🚀🧠. Full Stack Engineer – AI Startup – Up to 85k 🚀🧠. Bring ideas and improvements to their engineering processes.

Full Stack Product Engineer – SaaS Startup 🚨. Full Stack Product Engineer – SaaS Startup 🚨. Due to increasing customer demand, they’re expanding their engineering team and looking for product-minded engineers to join them on their journey.

Job title: Senior Full-Stack AI Engineer Location: GSK HQ Team: Enterprise AI - Data Science UK Contract: 6 months Overview GSK is a science-led global healthcare company with a special purpose: to help people do more, feel better, live longer. We are on an audacious journey to impact the health of 2.5 billion people over the next decade. Our R&D division is at the forefront of this mission, dedicated to the discovery and development of groundbreaking vaccines and medicines. We are transforming the landscape of medical research by integrating cutting-edge science and technology and harnessing the power of genetics and new data. By fostering a collaborative environment that unites the talents of our people, we are revolutionizing R&D to pre-empt and defeat diseases. Join us in our commitment to uniting science, technology, and talent to get ahead of disease together. Role Overview GSK are seeking a Senior Full Stack AI Engineer with a strong focus on frontend engineering, user experience and product delivery. You will lead the design and implementation of immersive, interactive web experiences that leverage large language models (LLMs) as core product capabilities. In this role you will collaborate closely with product, UX/design, ML research and platform teams to translate user needs into elegant, reliable AI-powered experiences, and drive agile delivery from prototype to production. Key Responsibilities • Deliver highly interactive frontends (involving text based and video based chat experiences) built with modern frameworks like React that integrate LLM-driven features (conversational interfaces, tool-assisted workflows, structured editors, visualizations) to boost marketing productivity., • Enable measurement / analytics to track usage of the app and of LLM features, • Own the end-to-end product experience for LLM-enabled features: collaborate with UX/design to craft flows, run rapid prototypes, and iterate based on user testing and analytics., • Integrate LLMs into the application stack, handling prompt design, response parsing, tool use, chaining, and RAG strategies while balancing latency, cost and reliability., • Implement frontend architectures and state management patterns that scale for complex, real-time, and collaborative UIs (React hooks, Context, Redux/Zustand/Recoil, server-state patterns)., • Build responsive, accessible, and performant UI components and design systems (component libraries, theming, design tokens) to ensure consistent product quality and fast iteration., • Implement real-time and progressive UX patterns (WebSockets, SSE, streaming LLM responses, optimistic updates, incremental rendering) that make AI interactions feel fast and human-centered., • Collaborate on frontend work with UX designers and researchers, follow standard coding conventions, and implement best practices for design, accessibility, testing and observability., • Work with backend and platform engineers to define APIs, ingestion pipelines, vector retrieval, caching and rate-limiting strategies that support robust LLM behavior., • Drive agile delivery: break down features into deliverable increments, run sprint planning, pair with the tech PM on prioritization, and ensure production readiness through CI/CD, feature flags and canary releases., • Define and instrument UX and model-level metrics (engagement, latency, hallucination rates, user satisfaction) and use those signals to prioritize improvements., • Ensure security and privacy are integrated into the UX (PII handling, consent flows, data minimization, redaction and access controls). Minimum Requirements • 6+ years building production web applications with proven ownership of user-facing features; significant experience in frontend engineering and product delivery., • Deep expertise with React (functional components, hooks) and modern frontend ecosystems including CI/CD., • Demonstrable experience building highly interactive, immersive frontends (rich state, animations, canvas/visualizations, streaming UIs or collaborative editing)., • Strong UX sensibility and experience working directly with designers to translate wireframes and prototypes to polished, accessible product UIs., • Hands-on experience integrating LLMs / generative models into applications (OpenAI, Anthropic, local/open-source LLMs): prompt engineering, response handling, safety guardrails, RAG architectures., • Good understanding of how large language models work, including transformer architecture, tokenization, attention mechanisms, decoder/encoder-decoder variants, fine-tuning/few-shot approaches, and common failure modes (hallucinations, bias, context-window limitations)., • Solid backend experience (Node.js/TypeScript, Python, or similar) to collaborate on APIs, authentication, ingestion, and retrieval layers — enough to design pragmatic interfaces and own cross-stack features., • Practical experience building retrieval-augmented generation pipelines (embeddings, vector stores, chunking/indexing)., • Proven track record delivering features in agile teams: sprint planning, incremental delivery, feature flagging, A/B tests and operationalizing metrics., • Strong software engineering fundamentals: testing (unit/integration/E2E), observability, performance profiling, and security-aware development., • Excellent communication skills and experience mentoring engineers and collaborating across product, design and ML teams. Preferred Requirements • Familiarity with LLM orchestration and tools (LangChain, LlamaIndex, Haystack, OpenAI/Anthropic SDKs)., • Advanced visualization/graphics skills or experience building interactive applications, • Experience with design systems and component libraries (Figma workflows, design tokens), • Background in regulated industries (healthcare, pharma, finance) with awareness of compliance and data governance constraints., • Contributions to open-source projects, public talks or technical writing about LLM-enabled UX or frontend engineering. How to Apply Please submit your CV via the application form. If your initial application is successful, one of our recruiters will be in touch. Should you reach this stage, you will likely be required to submit the following in addition to your CV: • One or two recent projects where you led the frontend/UX for an LLM-enabled product (provide links, screenshots, architecture diagrams or repos where possible)., • The primary UX decisions you made and why (trade-offs, accessibility/performance considerations)., • Key technical challenges you faced (model behavior, latency, security) and how you solved them. Why GSK? Uniting science, technology and talent to get ahead of disease together. GSK is a global biopharma company with a special purpose – to unite science, technology and talent to get ahead of disease together – so we can positively impact the health of billions of people and deliver stronger, more sustainable shareholder returns – as an organisation where people can thrive. We prevent and treat disease with vaccines, specialty and general medicines. We focus on the science of the immune system and the use of new platform and data technologies, investing in four core therapeutic areas (infectious diseases, HIV, respiratory/ immunology and oncology). Our success absolutely depends on our people. While getting ahead of disease together is about our ambition for patients and shareholders, it’s also about making GSK a place where people can thrive. We want GSK to be a place where people feel inspired, encouraged and challenged to be the best they can be. A place where they can be themselves – feeling welcome, valued, and included. Where they can keep growing and look after their wellbeing. So, if you share our ambition, join us at this exciting moment in our journey to get Ahead Together. Inclusion at GSK GSK is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive equal consideration for employment without regard to race, color, national origin, religion, sex, pregnancy, marital status, sexual orientation, gender identity/expression, age, disability, genetic information, military service, covered/protected veteran status or any other federal, state or local protected class. If you need any adjustments in the recruitment process, please get in touch with our Recruitment team () to further discuss this today. Important notice to employment businesses/agencies GSK does not accept referrals from employment businesses and/or employment agencies in respect of the vacancies posted on this site. All employment businesses/agencies are required to contact GSK's commercial and general procurement/human resources department to obtain prior written authorization before referring any candidates to GSK. The obtaining of prior written authorization is a condition precedent to any agreement (verbal or written) between the employment business/ agency and GSK. In the absence of such written authorization being obtained any actions undertaken by the employment business/agency shall be deemed to have been performed without the consent or contractual agreement of GSK. GSK shall therefore not be liable for any fees arising from such actions or any fees arising from any referrals by employment businesses/agencies in respect of the vacancies posted on this site. Please note that if you are a US Licensed Healthcare Professional or Healthcare Professional as defined by the laws of the state issuing your license, GSK may be required to capture and report expenses GSK incurs, on your behalf, in the event you are afforded an interview for employment. This capture of applicable transfers of value is necessary to ensure GSK’s compliance to all federal and state US Transparency requirements. For more information, please visit GSK’s Transparency Reporting ___ site.

Full Stack Software Engineer (Python / React).Up to £140,000 Base + Bonus + Comprehensive Package.This is an opportunity to work in a fast-paced, high-performance trading environment where technology is central to the firm’s success across multiple asset classes.You will work closely with traders

If you love combining creativity in web development with the logic and scalability of data engineering, this is your opportunity to grow in a cutting‑edge environment. Full Stack Engineer (Web & Data). Full Stack Engineer (Web & Data).

I'm working with a systematic hedge fund in London, who have large technical teams underpinning desks of quants and traders, as they trade in a computer driven yet collaborative manner.The codebase is in C#, and they have a multiple engineers on their trading desks building bespoke trading tools and

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

• Founding Full-Stack Engineer to join a pre-SEED FinTech B2C product, • London (4 days in office in Shoreditch, London), • Up to £120k + meaningful equity, • No VISA Sponsorship The Company An early-stage, consumer fintech startup building a new kind of personal finance platform. Backed at pre-seed with a multi-year runway. The team is intentionally small (currently 3 full-time), highly technical, and product-led. We’re looking for a Senior Full Stack Product Engineer to help design and build the core of the platform as they move from internal alpha to public beta and beyond You'll be building a personal finance product focused on context, clarity, and long-term financial habits. The platform aggregates people's banking, investments, and pensions into a single view, surfacing financial “vitals” without judgement or prescriptive advice. Under the hood, the product is powered by a proprietary data schema to turn messy financial data into meaningful, comparable insights. This is a senior, hands-on role with ownership across architecture and execution. You’ll be instrumental in building and scaling the core systems that underpin the product. You’ll work on a wide variety of projects including: • Bank connectivity and transaction ingestion, • Live transaction categorisation, • Data modelling Tech Stack: Go (backend leaning), Typescript, React, PostgreSQL, Terraform, Python, LLMs where appropriate. Help shape the stack! What We’re Looking For • Senior-level Product Engineer (ideally 6+ years experience), building with Go or other backend-focused languages, • A full-stack background (Typescript, React), with solid architectural fundamentals, • Experience handling large or complex datasets at scale, and thoughtful about data sensitivity, privacy, and personal information, • An interest in product and how people actually use what you build, • A pragmatic, ownership-driven mindset Why Join • Shape the core architecture from the ground up, • Build something genuinely different in personal finance, • Meaningful equity at an early-stage startup, • Direct influence on product, technical direction, and company trajectory If you’re a Senior Product Engineer who enjoys ownership, cares about data integrity, and wants to build a product people trust with their financial lives, we’d love to hear from you.

Founding Engineer – Early-Stage Deep Tech Startup Full-time | Onsite in London £180,000 + Substantial Equity An early-stage, stealth-mode startup is looking for a Founding Engineer to join the team in central London. This is a unique opportunity to help build a transformative new platform at the intersection of software systems, automation, and intelligent infrastructure. Founded by leading academics and proven entrepreneurs, the business is backed by top-tier investors and is solving complex technical problems that demand creativity, rigour, and ambition. The Role • Build and own core systems and architecture from the ground up, • Work closely with the founding team on product direction and technical strategy, • Make key decisions across the full stack — from infrastructure to user-facing elements, • Contribute to the early engineering culture, processes, and hiring Ideal Background • Experience building complex systems in a startup or high-growth tech environment, • Strong computer science fundamentals; comfortable working across multiple layers of the stack, • Demonstrated ability to operate in fast-moving, ambiguous environments, • Bonus: familiarity with compilers, distributed systems, systems design, or programming languages theory Offer • £180,000 base salary, • Significant equity in a high-potential startup, • London-based, full-time — onsite collaboration with a world-class founding team

Projects span the full development lifecycle, from backend services and data processing in Python through to user facing interfaces built with React and TypeScript. The team builds advanced analytics platforms and internal tools using Python on the backend, with modern React and TypeScript driven fr

Here at Venator, we are working with an eCommerce company who have UK's biggest technology platform - they have a live mobile application as well as a web based application- the company is now looking to grow!.You will have 20 work from anywhere days added on top which you can use to make soime week

Full-stack with serious backend chops: TypeScript/JavaScript, Python, FastAPI, Next. You're an engineer who gets bored when things move too slowly. Founding Engineer - £100k plus equity.

They’re hiring their second full-stack developer to work closely with their experienced Lead Developer and CPO to supercharge their development capacity. Are you a talented, super-ambitious full-stack developer? Excited by building solutions to real-world challenges? Motivated by owning shares in

Experience with a front-end/full-stack framework like React or Remix.

To help us achieve this, we're seeking a Full Stack Software Engineer to join our team! We're particularly looking for someone with strong. As a Safe Intelligence Full Stack Software Engineer, you will:. Work proficiently across the entire stack to develop and integrate new features related to model

Founding Software Engineer – Factory & Manufacturing Systems Location: On-site, London (factory-based) Salary: Up to £170,000 base + meaningful equity Industry: Advanced Manufacturing / Defence / Aerospace / Industrial AI The Company: They are a very early-stage, software-first manufacturing company building a new industrial backbone for the West. They are creating a network of small-to-medium, highly specialised factories (starting with CNC machining) and writing the software that runs each factory and orchestrates the entire network end-to-end. The ambition is to scale from a handful of sites today to dozens (and eventually hundreds) across the UK/Europe and the US, powered by an in-house manufacturing operating system. The team is sub-20 people. There are no layers. Every engineer is building the core. What You’ll Do: • Build core full-stack systems that run live factories (MES, operator tools, data platforms)., • Architect and ship software for quoting, scheduling, routing, and production orchestration., • Work on-site with operators and leadership to identify bottlenecks and turn them into product., • Own problems end-to-end: ambiguous need → design → build → deploy → operate → iterate., • Help design the software foundations for a distributed factory network. What We’re Looking For: • High-agency, independent builders who have worked in very early, fast-moving environments., • Engineers comfortable without product managers, management layers, or predefined roadmaps., • People motivated by real-world systems and visible impact, not purely digital products., • Low-ego, pragmatic, strong engineering fundamentals, biased toward ownership and shipping. Strong signals include: founding engineer / ex-founder experience, early engineer at tier-1 startups, or exposure to manufacturing, robotics, aerospace or defence. A slight frontend / UX leaning (React/TypeScript) is a plus and a current team gap. Years of experience matter less than the environments you’ve chosen and how you operate. Tech: TypeScript, React, Postgres, AWS (stack flexibility is fine for strong generalists) Why You’ll Thrive • Your software runs real machines producing real components., • You work inside the factory, not next to it., • You help build a manufacturing OS from first principles., • You get genuine founding-stage ownership and meaningful equity., • You work on industrial problems with national-scale relevance. This role is open to UK citizens only.

London, 4 to 5 days per week on site.Competitive salary and equity, depending on experience.Navys is a venture backed legal technology company building enterprise workflow software for private capital markets.The platform replaces manual, email driven legal processes with a structured system that en

We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry.Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision.Our mission is to bring the intelligence of modern machine learning directly to

We are currently recruiting full stack developers to join a trading technology team at a leading investment firm. These roles are best suited for candidates with experience in full stack development using React and Python and particularly those who have built trading platforms from the ground up. Fu

Senior Full-Stack Engineer (Backend-Leaning) – SaaS + AI. Full-stack engineering, backend-leaning (Next. Senior Full-Stack Engineer (Backend-Leaning) – SaaS + AI.

AI Startup in London – Hiring Full-Stack Engineers (Senior) – 5 days a week on-site – up to £150k. I am working with a rapidly growing AI startup based in London, building next-generation products that transform how businesses use technology. AI Startup in London – Hiring Full-Stack Enginee

I am partnered with an AI startup backed by a significant fresh funding round looking to hire a full stack engineer to join a small, senior engineering team in London. Full Stack Engineer | AI Startup | London. This is a hands on full stack role where you’ll work across frontend and backend system

This is a job that Scout, our AI Recruiter, is recruiting for on behalf of one of our clients. She will pick the best candidates from ivee's network. The next step is to create an ivee profile. Junior Back-end Engineer Company Description: Fast-growing scale-up This is a great opportunity to join a fast-moving engineering team as a Junior Backend Engineer. You’ll help build and maintain scalable backend systems that power real-world applications, working closely with product and front-end teams. It’s a hands-on role designed for someone early in their backend career who’s excited to learn, ship, and grow. Key responsibilities: • Build and maintain server-side logic using modern backend frameworks (e.g. Node.js, Python, Go), • Work with APIs — designing, integrating, and maintaining RESTful endpoints, • Support database design and optimisation (e.g. PostgreSQL, MongoDB), • Collaborate with front-end and product teams to deliver full-stack features, • Write clean, testable, and maintainable code, • Help improve system performance, scalability, and security, • Participate in code reviews and learn from senior engineers, • Stay curious and keep learning — especially in areas like DevOps, testing, or AI tooling What we're looking for: • 1–2 years of experience (including internships or personal projects) in backend development, • Proficiency in at least one backend language (Node.js, Python, Go, etc.), • Basic understanding of how REST APIs work, • Familiarity with databases and version control (e.g. Git), • Strong problem-solving mindset and attention to detail, • A willingness to learn fast and take feedback, • Bonus: any experience with cloud platforms (AWS, GCP), testing frameworks, or containerisation How to apply: Click apply to submit your application. To be automatically shortlisted for future roles like this, head to ___ to make a free account. Don't forget to upload your CV and write a bio to begin being headhunted for your dream position!

We’re building the AI layer that autonomously runs small businesses. Working alongside technical founder Kai Feller (previous company was UK’s largest bootstrapped exit of $300m), we're assembling an elite founding team that moves fast and gets things done. As a Founding Engineer, you’ll ship step-changing features fast, shaping architecture, and integrating cutting-edge AI directly into the product. You’ll design & build the scalable backend systems and intelligence layers that enables the autonomous running of thousands of businesses. This is an engineering role at its best - building what’s never existed before hands-on within a small & exceptionally talented group, that operates with a sense of urgency and passion for building innovative products. What you’ll do • Build new step-changing product features end-to-end, shipping fast and often., • Integrate cutting-edge AI directly into the product - voice, reasoning, context management, data extraction - turning static workflows into living intelligence., • Design, build & own APIs that scale internally & externally to connect products, integrations, and intelligence systems together., • Architect robust data flows & pipelines that fuel agent context & decision making., • Develop backend infrastructure and intelligent automation for knowledge crawling, extraction and enrichment., • Help shape and contribute towards our DevOps practices (CI/CD, cloud infrastructure, observability). Requirements • Deep full-stack Javascript expertise or deep backend Python expertise (we have an open role for both)., • High-agency - you own projects end-to-end and make decisions with imperfect information., • Strong sense of ownership - you care deeply about your work and what we deliver to customers., • Track record shipping - you know what it takes to rapidly ship production ready features., • AI fluency - you know how to use AI tools to make yourself ridiculously efficient., • Excellence everywhere - everything you apply yourself to is done to the highest of quality with top results. We are building a team of winners. Why join • Share options - Everyone gets equity. But unlike most, our share options translate into real value as we’ve paid them out before., • High pay & stability - We pay top salaries and offer tangible equity. You don’t have to trade security for upside., • Tools for the job - Whatever helps you be more productive, you get it. The best hardware, software, and setup. We love technology., • Proven winning team - We’ve built, scaled, and sold businesses before (UK’s largest bootstrapped exit of $300m). Now we’re hands-on building again., • Warchest available - We have our own significant funds available if required. No external shareholders, no external distractions.

Note that the job description below is for a full stack dev. Someone with 3-5 years experience as a full stack dev in a fast growing company.

We have a Full Stack Developer opportunity with a growing technology company building software platforms for complex, data-intensive technical workflows. As a Full Stack Software Engineer, you will work across backend services and frontend applications, contributing to end-to-end feature development

Software Engineer (Full Stack) Salary & Equity Salary - £100k to £200k Equity - 0.5% to 1% Are you a passionate Full Stack Software Engineer ready to make a real-world impact? Our client is on a mission to reinvigorate the West’s manufacturing capabilities and is looking for exceptional talent to join their team in London, UK. The Role As a Full Stack Software Engineer, you’ll play a key role in building and scaling a proprietary operating system that is redefining industrial manufacturing. You’ll architect, design, and develop critical systems for factory automation and real-time data processing, working closely with leadership and shop-floor teams. Why Join? • Be at the forefront of re-industrialising the West, • Work in a flat hierarchy with high autonomy and collaboration, • Direct engagement with physical manufacturing processes in a London factory, • Competitive salary (£100K – £200K) plus generous equity What We’re Looking For • 2–5 years’ experience in full-stack development, • Experience with TypeScript, React, Postgres, and AWS, • Strong UX / frontend capability preferred, • Deep mission alignment with onshoring manufacturing, • Willingness to work 5 days per week on-site in London Bonus Points • Experience as an ex-founder or in a fast-paced startup, • Background in aerospace or defence Join a team helping to accelerate industrial innovation and reshape the physical world. Apply now / LinkedIn Easy Apply #FullStackEngineer #SoftwareEngineer #Manufacturing #TechJobs #LondonJobs #Hiring #TheLanesGroup #LanesRecruitment

Familia with Typescript, JavaScript & React full stack engineering environments. If you have the right amount of Software Engineering leadership experience with a hands-on approach to leading teams & scaling technology platforms, please apply ASAP with a copy of your CV. You’ll join at a pivotal m

I am currently working with one of the fastest-scaling platforms in the creator economy which is a creator-first, AI-powered product that enables creators around the world to directly monetise their audiences. Clear communicator & collaborator. If you want to hear more about the Senior Full Stack En

🔥 Software Engineer – Build a Platform Used by Millions Join a fast-growing consumer brand powering real-time, personalised customer experiences at scale. Package 💷 £70–90k + 5% bonus 🏢 Hybrid (2 days onsite, London) What you’ll do • Own the full lifecycle of services: API design, architecture, deployment, and production, • Build an internal platform delivering consistent, real-time communications across multiple digital touchpoints, • Collaborate with Product, Data, Marketing, and Engineering teams across multiple locations Tech stack • Node.js (TypeScript), Ruby, • Event-driven systems (Kafka), APIs, • AWS / GCP, Kubernetes Why it’s exciting • Work at scale in a high-traffic, consumer-facing environment, • Strong engineering culture: automated testing, reliable CI/CD, observability, distributed systems, • True end-to-end ownership and impact 📩 Interested? DM your CV and notice period today! 🔥 Software Engineer – Build a Platform Used by Millions

Paragon Alpha are working with a hedge fund famous for mid frequency equity trading, while also having a successful L/S Equity desk running strategies out of London. The desk need to hire two Quantitative Developers in London, to build signal generation frameworks, back-testing engines, and full stack trading apps. You would be on a specialised desk and partnering with traders and researchers, helping to modernise and augment their infrastructure. Stack: Python, React/Typescript, AWS, This firm offer a scientifically driven culture, with tonnes of academic and open source resources to leverage, while offering industry leading salary packages. If this sounds of interest, please do apply.

Ruby on Rails Developer – London (Hybrid) A fast-growing technology business is building the next generation of insurance solutions, helping major e-commerce platforms protect customers while delivering simple, modern insurance experiences. They are scaling, ambitious, and building properly from day one: regulated, revenue-generating, and already expanding across Europe with serious backing behind them. If you want meaningful ownership instead of being another developer lost in a big corporate machine, this is a chance to help shape something from the ground up alongside a small, highly capable engineering team. You will be working across a modern platform built predominantly in Ruby on Rails (with Python also used within the stack), contributing to backend services, APIs and integrations with platforms like Shopify and Magento. You will have genuine input on architectural direction, opportunities to improve infrastructure as things scale, and the trust to ship great work without unnecessary noise. If your background is stronger in Python than Ruby, that is absolutely fine. Required experience: • 2+ years’ commercial engineering experience, • Strong Ruby on Rails or Python experience, • Solid understanding of API-led development, • Comfortable working across modern full-stack environments, • Someone who enjoys ownership, initiative and working in a small, ambitious team, • Happy with hybrid working, typically 2–3 days per week in London In return, you will be joining a genuinely exciting scaling environment rather than a maintenance role: greenfield work, a collaborative culture built around ownership and ambition, a performance-linked quarterly bonus structure, equity eligibility and the chance to help shape a product with serious long-term potential.

Senior Full Stack Engineer – AI Startup – Up to 150k 🚀🧠 💰 Salary: £80,000 - £150,000 + meaningful equity 🏙️ Location: London, hybrid 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) 📈 Team size: 27 heads 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 150k 🚀🧠

Working for an industry leading, high-growth SaaS business, the Senior Software Engineer will build innovative next-gen solutions that are at the forefront of the industry. In this role, the Senior Software Engineer will be given full autonomy, taking ownership from design phase through to deployment, covering primarily backend, with some front end too (fine if you've only got backend experience). This area is the future of the company (and the industry!) and as such has strong investment and visibility. The Senior Software Engineer will be responsible for leading the design, build and deployment of industry leading software solutions. You’ll work in collaboration with product, design and the wider engineering team to improve and scale existing features, as well as build brand new ones. The Senior Software Engineer will have: • Strong backend or full-stack software development experience, • Strong backend coding experience, ideally in either Golang (Go) or Java, • Any front end experience is a bonus (e.g. React), but not a must-have, • Experience with cloud platforms e.g. AWS, Azure, GCP - Google Cloud, • Experience with data warehouses e.g. BigQuery, Redshift, Snowflake, • Ability to work collaboratively, • Open to new AI tools and technologies, • Could come from roles like Senior Full Stack Engineer or Senior Backend Engineer or making the step up from 'mid' They offer a great package on top of your basic salary, including a bonus, stock, private healthcare and a generous pension. With the growth that they are going through, there is also plenty of opportunity for career progression. Senior Software Engineer London / hybrid (ideally 2 days in office) £100k + bonus, stock + benefits

Senior Ruby Developer - Leading Health Tech - Hybrid Salary: Paying £75,000 - £105,000 + Equity Industry: Health Tech (Tech for Good) Location: Hybrid, 2 days a week in Central London Office Tech Stack: Ruby on Rails, TypeScript, AWS 👩🏻 💻 The Company 🚀 We're excited to have partnered with a leading health tech business which is transforming an interesting niche within the health tech industry. You will have the opportunity to work on highly impactful products improving the lives of many. The Role ✨ In this role, you will have plenty of ownership/autonomy whilst working in a social environment who like to celebrate each others wins as a team. You will be expected to be confident in a product focused environment and be able to work effectively in a small focused team. This is the right role for someone seeking fulfilling and rewarding place of work. This is a backend leaning full stack role Desired Skills ⚙️ • Ruby on Rails, • TypeScript, • React or Vue.js, • AWS They are willing to move quickly with this role, please apply now if interested. Senior Ruby Developer - Leading Health Tech - Hybrid

Title: Software Engineer in Test Company: Specialist Technology / eCommerce Platform Location: London – 2-3 days a week Salary: up to £60,000 + benefits Tech essentials: Javascript and either Cypress or Playwright Interview process: 3 stage interview process Why should you be interested in this opportunity? • You’ll be part of a dynamic multi-disciplinary team, taking ownership of Automated Testing, • They have recently been acquired by another successful business, providing a larger community of QA / Developers to work with and enjoy the ride together, • You’ll be given the freedom to make this role 100% yours and trusted to suggest appropriate tools and frameworks and improve processes, • You’ll work directly alongside passionate founders who want to deliver a world-class customer experience, • Each day you’ll be listened to as the expert you are, to solve interesting and complex challenges that are pivotal to the overall direction of the business (you will be valued!) Why they’ll be interested in you - • You'll have enough experience behind you to see problems before they occur, to educate the team and modernise QA strategy, • You’d be comfortable building upon an existing robust, scalable Test Automation framework with a bias towards frontend UI - React, • From planning to execution, you’ll know full-stack testing and how to implement modern approaches for maximum impact (Web/API/early visibility of quality on CI/CD pipelines), • You’ll be excited to start learning about Performance/Load testing, even if this is new to you If interested at all then please do apply, the right individual is more important than the perfect skill match! Keen to find out more?

About Medly AI We're the fastest growing EdTech startup in London, on a mission to change education forever. We're living through a once-in-a-generation moment where AI-native companies are redefining entire industries - Cursor for code, Midjourney for image gen, Harvey for law. Medly is building a generational company for education. In just 4 months since launch, we've achieved retention rates that beat Duolingo and delivered personalized education to over 100,000 users. We're looking for ambitious talent to join our team. Backed by impact-focused VCs and supported by partners including UCL, Innovate UK, Microsoft, and Google, we're becoming the go-to AI education platform for all major exams worldwide. The Role We are looking for a passionate Senior Fullstack Engineer to join our growing team at Medly. This is a new role working closely with our hands-on Technical CEO and other Full Stack Engineers to architect and scale our platform as we grow rapidly. You will play a pivotal role in high-impact projects such as optimizing performance for hundreds of thousands of users, designing scalable system architecture, mentoring junior engineers, and making key technical decisions that shape our product. This is a high-impact opportunity for someone ready to take significant ownership, solve complex challenges at scale, and help power the next generation of educational technology. Role Responsibilities • Architect and build scalable features across our web app (Next.js) and mobile app (React Native), • Design and optimize our Python backend for high performance and reliability at scale, • Lead database architecture decisions and optimize Postgres for growing data volumes, • Own critical infrastructure on AWS, ensuring high availability and cost efficiency, • Drive technical decisions and establish best practices across the engineering team, • Mentor junior engineers and contribute to a culture of engineering excellence, • Collaborate closely with the CEO and other Full Stack Engineers on high-impact projects Technical Requirements • 3+ years of fullstack engineering experience in high-traffic production environments (100k+ users), • Strong proficiency with Next.js and modern React patterns, • Deep knowledge of Python and building performant backend services, • Advanced SQL skills and experience optimizing Postgres at scale, • Experience with AWS services (EC2, RDS, Lambda, S3, or similar), • Track record of building and maintaining systems that handle significant user load Ideal Candidate • Quality Focus: Obsessive attention to detail and commitment to shipping polished, bug-free experiences, • Collaborative Spirit: Ability to work closely with designers, product managers, and other developers, • Educational Interest: Passion for education and learning, though specific EdTech experience isn't required, • Startup Mindset: Thrives in fast-paced environments with rapid iteration and high impact, • Innovation Drive: Excited by the opportunity to build cutting-edge educational technology What We Offer • Competitive salary, • Opportunity to make a real impact on educational outcomes for students worldwide, • Collaborative, diverse team united by a powerful mission, • Fast-paced environment with significant growth and development opportunities, • Regular team events and a culture focused on innovation and impact, • Work on products used by tens of thousands of students daily, • Shape the future of AI-powered education

Location: London Employment Type: Full-time Department: Engineering – Hardware About the Company Timebeat is a leader in high-precision clock synchronisation technology, delivering enterprise-grade timing solutions for financial services, telecommunications, aerospace, defence, and critical infrastructure. Our products enable nanosecond-level accuracy, reliability, and visibility across distributed systems. We are expanding our hardware engineering team to continue advancing our timing platforms and next-generation synchronisation devices. Role Overview We are seeking a Hardware Design Engineer with experience in PCB design using Altium Designer. In this role, you will design, develop, test, and iterate hardware solutions for high-precision timing, network synchronisation, and embedded systems. You will work closely with software, FPGA, mechanical, and product teams to deliver robust, production-ready designs. You will work alongside senior hardware design engineers as well as external design consultants. Key Responsibilities Hardware Design & Development • Design multi-layer PCBs in Altium Designer, including schematic capture, layout, library management, and DFM/DFA considerations., • Develop hardware for clock synchronisation and timing systems, including oscillators, GNSS receivers, network timing modules (PTP/NTP), and related embedded electronics., • Create, simulate, and validate high-speed digital, analogue, mixed-signal, and power circuitry., • Perform signal integrity and power integrity analysis; design for EMC compliance., • Develop and execute test plans for prototype validation and product qualification., • Work with lab equipment (oscilloscopes, spectrum analysers, frequency counters, power analysers, logic analysers)., • Debug hardware issues and provide timely design revisions., • Support environmental, compliance, and reliability testing. Cross-Functional Collaboration • Collaborate with firmware, FPGA, and software engineers to ensure seamless integration across the product stack., • Work with manufacturing partners to resolve production issues and improve yield., • Participate in design reviews, documentation, and version-control workflows. Required Skills & Experience • Bachelor's degree or higher in Electrical Engineering, Electronics Engineering, or related field., • 1-5 years experience, • Proven experience designing PCBs using Altium Designer., • Strong understanding of digital and analogue circuit design., • Experience with high-speed interfaces (e.g., Ethernet, USB, SPI, I2C, LVDS)., • Familiarity with oscillators, timing circuits, PLLs, GNSS modules, and precision measurement components., • Solid understanding of EMC/EMI principles and regulatory compliance (CE, FCC or similar)., • Comfortable using lab equipment for debugging and characterisation., • Knowledge of design-for-manufacture (DFM) and design-for-test (DFT). Preferred Qualifications (nice to have but not essential) • Experience in hardware for timing, synchronisation, PTP (IEEE 1588), GNSS, or networking hardware., • Experience with FPGA/SoC platforms (Xilinx, Intel/Altera, Microchip)., • Familiarity with thermal design and power optimisation., • Experience with scripting or automation tools (Python, MATLAB, etc.)., • Knowledge of embedded firmware basics (C/C++). Personal Attributes • Strong problem-solving skills and attention to detail., • Ability to manage multiple tasks and prioritise effectively., • Collaborative and communicative team player., • Driven to innovate and continuously improve hardware quality. What We Offer • Competitive salary and benefits package., • Opportunity to work on cutting-edge timing and synchronisation technologies., • A collaborative, fast-moving, engineering-focused environment., • Career growth and technical development opportunities.

A leading quantitative brokerage in the capital markets spare are currently seeking a technical, detail-oriented FIX Onboarding Analyst to support onboarding of institutional counterparties in the derivatives / best execution space. I you are hired you will manage FIX connectivity, certification, and trade-flow integration while working closely with quants, brokers, developers, and operations. The role requires deep knowledge of FIX protocol, derivatives workflows, and best execution obligations. Key Responsibilities; • Own the full onboarding lifecycle in a client- and venue-facing capacity, engaging with brokers, ECNs, ATSs, and exchanges., • Manage FIX certification: schemas, mappings, test plans, and cutover., • Troubleshoot connectivity, latency, sequencing, and messaging issues., • Maintain a counterparty library of FIX versions, dialects, and extensions., • Ensure compliance with regulatory, risk, and legal requirements., • Drive automation and process improvements in onboarding workflows. Required Skills & Experience • 3–7+ years in electronic trading / FIX onboarding (derivatives preferred)., • Strong experience with FIX protocol systems, • Familiarity with TCP/IP, VPNs, and basic network troubleshooting, • Linux/bash, XML, and SQL or similar tech stack experience, • Excellent communication & project coordination skills, • Ability to read logs, follow specs, and keep organized records, • Familiarity with GitHub or other versions a bonus Desired Skills & Experience • Derivatives trading experience (OTC, cleared)., • Knowledge of futures and cash treasuries markets, • Experience with OMS/EMS, broker onboarding, or exchange UAT Compensation & Benefits • Competitive salary + bonus., • Health, retirement, and PTO benefits., • Professional development and industry conference participation., • Opportunity to work on cutting-edge trading infrastructure., • Three days in office requirement.

Senior Software Engineer (London, Full-Time) About Birl Launched in 2024, Birl has quickly become one of the UK’s most exciting circular commerce startups, redefining how resale and recycling can drive growth rather than cost. Birl’s plug-and-play platform integrates directly into a brand’s e-commerce site or in-store system, enabling customers to trade in pre-loved products for instant store credit. Birl manages the full process – AI verification, logistics, resale, and recycling - giving brands a no-touch circular solution that builds loyalty, generates new revenue, and delivers measurable ESG impact. Already live with over 10 premium fashion brands including Frahm Jackets, SIRPLUS, and Far Afield, Birl has expanded into sport through partnerships with Castore, Fanatics and West Ham United. These collaborations show that circular retail can scale commercially across multiple sectors. Backed by Innovate UK and early-stage VCs, and Winner of this year’s UK eCommerce Innovation Award (October 2025), Birl’s vision is to build the technology backbone for a world where every product has more than one life - making circular retail effortless, measurable, and commercially viable. Position Summary The Senior Software Engineer will play a central role in building Birl’s platform and leading our engineering capability. E-commerce experience is essential, with premium fashion and logistics experience highly desirable. This role combines full-stack development (Node.js, React, JavaScript) with mentoring and guiding a small engineering team. Ideal candidates will have experience building scalable e-commerce systems, integrating third-party platforms (e.g., Shopify), and applying AI/ML to enhance performance and automation. Responsibilities • Lead and mentor a small engineering team, • Architect and build scalable integrations across the e-commerce ecosystem, • Develop new features and infrastructure using Node.js, React, JavaScript, GCP, • Own and contribute to the technical roadmap, • Maintain high code quality, performance, and reliability, • Communicate effectively with both technical and non-technical stakeholders, • Implement data optimisation strategies, • Apply AI/ML technologies where relevant, • Troubleshoot and resolve issues across systems and integrations, • Improve and participate in agile development practices, • Conduct code reviews and mentor junior engineers Skills & Qualifications • Degree in Computer Science, Engineering, or similar, • 7+ years full-stack experience with Node.js, React, JavaScript, • Experience integrating e-commerce platforms (e.g., Shopify), • Experience leading or mentoring engineers, • Strong understanding of Agile and DevOps practices, • Excellent problem-solving and communication skills, • Experience with AI/ML (image recognition, automation, pricing) is a plus, • Familiarity with cloud platforms, microservices, and modern architecture, • Proactive, solution-oriented mindset with a passion for innovation Logistics • Work Location: United Kingdom only (London preference), • Timezone: UTC (London) ± 2 hours, • Working Pattern: Hybrid (up to 3 days remote per week), • Visa Sponsorship: Not available Compensation - What You Get • £60-90k (based on experience), • Hybrid working with access to our London office, • 33 days paid holiday, • Top-of-the-range laptop, • Pension scheme, • Company away days and regular team socials Interview Process 1. Application and short cover note, 2. Technical test, 3. Interview with the engineering team, 4. Founder interview, 5. Offer

Job Role: Lead Software Engineer, React Native Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the functionality of Travelex's and partner mobile applications. In this role, you will collaborate closely with our Principal Engineer and the Mobile Apps team members. While this is primarily an engineering role, we are always looking for developers who have a keen eye for product and who can contribute to the development of features at a product level before they are implemented. If you are eager to be part of a dynamic team, contribute to Travelex's digital-first strategy, and be part of a company that values its employees while prioritizing work-life balance, we invite you to explore this exciting opportunity with us. Key accountabilities and decision ownership: Technical Leadership • Lead the design and implementation of key features and components of our React Native mobile application., • Make informed technical decisions that improve performance, reliability, and scalability., • Participate in architectural discussions and help shape the technical direction of mobile applications., • Provide support and unblock engineers during development, testing, and integration. Project Ownership & Delivery • Own the technical delivery of high-visibility features or workstreams., • Work with Product and Design to refine requirements, contribute to planning, and identify risks early., • Break down complex tasks into clear, manageable deliverables for the team., • Communicate progress and technical considerations clearly to stakeholders. Collaboration & Mentorship • Mentor and support engineers, helping them grow their technical skills and confidence., • Lead by example in code reviews, ensuring best practices and quality standards are upheld., • Help foster a healthy engineering culture based on learning, knowledge sharing, and accountability. Engineering Quality • Champion strong testing, code quality, and performance practices., • Knowledge of best practices in security, performance and accessibility, • Identify areas for improvement within the codebase and contribute to long-term maintenance plans. Skills, knowledge, and experience: Must have: • 8+ years of software development experience, • 5+ years of professional experience in React Native, • Strong proficiency with TypeScript, React Native (or Expo), and mobile development patterns., • Proven track record of shipping complex mobile applications to production, • Comfortable mentoring peers and supporting technical decision-making., • Solid understanding of API integration (GraphQL and/or REST)., • Strong communication skills — able to work effectively with engineers, product managers, and designers., • Experience with native modules and bridging in React Native, • Familiarity with state management libraries (Zustand, Redux, MobX etc.), • Experience with the testing pyramid and tools such as Vitest, Jest, React Native Testing Library, Maestro, Detox Nice to have: • Experience with iOS (Objective-C, Swift) or Android (Java, Kotlin) native development., • Experience with mobile release processes for the App Store and Play Store., • Experience with performance optimisation and profiling in React Native., • Familiarity with analytics and crash reporting tools., • Experience building internationalised mobile applications, • Experience developing white-label applications Why Travelex? To remain the world’s leading foreign exchange specialist, we are focused on making our customers’ lives simpler, more engaging and hassle free while they travel or move money abroad. We promise to give them the freedom and peace of mind to explore the world, their way – enabling them to travel confidently because they know they have us to lean on. Customer centricity and digital are at the heart of our business strategy. Our commitment to innovation has never been greater, with the development of a number of digital-first, greenfield products and services. And with the Travelex's resources, deep industry experience and leading brand we are inventing the future of FX, cross-border e-commerce and international payments. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Job Description : London | Full-Time | Senior Engineer Permutable Technologies is a fast-growing AI company helping the world’s leading financial institutions make smarter decisions through real-time market intelligence and LLM-driven news analytics. We’re entering a critical scale-up phase and are hiring a Senior Engineer to work alongside a talented engineering team, helping us scale product, systems, and team maturity. This role is for someone who has been through scale-up before and understands how to partner with platform leadership while remaining deeply hands-on. You’ll help turn strong commercial momentum into a robust, scalable engineering foundation. What You’ll Be Doing • Work in close partnership with the Head of Platform to execute on platform strategy and delivery, • Own and deliver key parts of our core product stack, including real-time APIs, data pipelines, and ML/LLM-powered analytics, • Act as a senior technical leader within the team—mentoring engineers and setting engineering standards, • Support customer-facing rollouts with Product and Commercial teams, ensuring production reliability, • Help improve engineering processes, observability, and system resilience as we scale, • Stay hands-on while helping the platform function operate more effectively What You Bring • Senior engineering with majority experience in a scale-up or fast-growing start-up, • Strong backend or platform engineering background (data-intensive systems a plus), • Comfortable working alongside a platform lead, contributing to architecture and execution, • Experience mentoring engineers and leading by example, • Pragmatic decision-maker who balances speed with robustness, • Bonus: exposure to LLM, Transformers or financial/market data products Tech We Work With • Python, React, JavaScript, • AWS, Docker, Pulumi, Postgres, • Agile, • Transformer building, LLMs, time-series models, • Real-time data pipelines & scalable APIs Why Join Permutable? • A wide network of established institutional clients, • Frontier AI used in financial and commodities markets, • Small team, high trust, low bureaucracy, • Clear ownership and influence without management overhead, • Opportunity to grow into staff / principal responsibilities as we scale Industry: Business Intelligence Platforms • Employment Type: Full-time

Do you want to shape how LLMs are deployed at scale in a real business? Have you built RAG or agentic systems that moved beyond experimentation? Are you motivated by measurable customer and commercial impact, not demos? A private-equity-backed consumer services business is scaling its Data Science & AI capability as part of a multi-year transformation. Following an award-winning data programme, the company now has an established AI function and is investing further in LLM-powered assistants, RAG pipelines, voice/chat intelligence and early agentic workflows across both customer-facing and internal products. This Senior AI Engineer role is a hands-on individual contributor position, sitting between Data Science and AI Engineering. You will lead AI proof-of-concepts, design retrieval and context strategies, contribute to the AI architecture, and ensure solutions are robust, scalable and commercially grounded. The role spans the full AI lifecycle, from data preparation and model evaluation through to deployment and optimisation. Key responsibilities • Lead development of LLM and AI proof-of-concepts, • Design and implement RAG pipelines and agentic workflows, • Define evaluation frameworks for LLM quality and response accuracy, • Partner with product and engineering on chat flows and continuous improvement, • Contribute to AI platform architecture and best practices, • Mentor junior ML / AI engineers (no formal line management) Key details • Salary: £80,000 base + 10% bonus, • Pension: 5% matched, • Working model: Hybrid, 3 days per week (Tuesday & Wednesday fixed), • Location: Central London, • Stack: Python, Databricks, RAG, vector databases, Azure (preferred), LangChain / LangFuse, • Visa: This role cannot sponsor Interested? Please apply below.

Full Stack Software Engineer London (On-site) This is a hands-on software engineering role focused on building systems that directly run and optimise modern factories. The software is deployed into live production environments and is responsible for automation, real-time data, and operational decision-making. You’ll work across the full stack, from backend services and infrastructure to user-facing tools used on the shop floor. The role offers real ownership, fast iteration, and close collaboration with operators and leadership to solve practical, high-impact problems. This environment suits engineers who enjoy autonomy, moving quickly, and seeing their work have immediate impact in the physical world rather than purely digital products. What you’ll do: • Build and own full-stack systems used in live factory operations, • Ship and iterate software directly in production environments, • Work closely with operators and leadership to remove operational bottlenecks, • Take features from concept through deployment with full ownership Nice to have: • Strong frontend or UX sensibility, • Experience at early-stage startups or as a founding engineer, • Exposure to industrial, manufacturing, aerospace, or defence environments, • Experience working with real-time systems or operational software

Full Stack Engineer | Algo Trading | London (On-site 5 days per week) I'm partnered exclusively with a Trading firm in London who are looking for a Full Stack Developer to join their algo trading team, helping to deliver a next generation trading and analytics platform. Previous experience working within a trading environment is highly preferred! What you’ll be doing • Building and shipping full-stack features across UI, backend services, APIs and data, • Taking ownership of work from idea → implementation → deployment, • Working closely with quantitative developers, researchers and traders What you need • 1–3 years’ commercial software engineering experience, • Strong Python experience on the backend, • Frontend experience with React (or similar modern frameworks), • Familiar with APIs, databases, Git and CI/CD, • Prior exposure to trading or financial services is beneficial What you'll get • Up to £120k base salary plus PnL focused bonus, • Direct impact on live algorithmic trading systems, • Greenfield platform work with real ownership, • Fast moving, high-bar engineering environment, • Excellent compensation and benefits 📩 If this sounds like you, apply here or drop me a message.

Title: Senior Fullstack Engineer Salary/Package: £70k-£100k + Equity Company Sector: Fintech (SaaS) Tech: TypeScript, Node, React, Next, GraphQL, AWS Location: Central London (London Bridge / Bank) WFH / Hybrid: 2-3 days in office (Bank) I’m hiring a full-stack Software Engineer for a small, high-velocity team building an AI-native platform used by major financial organisations. Think: complex data, real users, real impact - but built with the speed and energy of a lean startup. This team uses AI where it actually matters: helping structure and understand large volumes of financial data so users get instant, trustworthy insights. If you enjoy tight build loops, meaningful ownership, and shipping at pace (not endless planning), you’ll like this. The Role You’ll work across a modern stack – React, TypeScript, Node, Postgres, AWS - taking features from idea → data model → polished UI → production. You’ll shape the architecture as the product scales, work closely with founders, and have a genuine say in how things get built. You’ll Be a Great Fit If You: • Have 5+ years’ experience building production-grade web apps with React + TypeScript, • Are comfortable across the stack - API design through to front-end polish, • Have experience with AWS or similar cloud infrastructure, • Care about ownership, quality, and impact, • Are curious about AI, automation, and modern code-assist tools (Cursor, Copilot, etc.), • Move fast, test properly, and think like a product engineer, • Enjoy working in small, high-energy teams Bonus Points For: • Experience with Postgres, Prisma, GraphQL, Next.js, • Exposure to LangChain / LangGraph / AI-driven workflows, • Building something end-to-end yourself (side project, startup, OSS) What You’ll Be Doing: • Building features from scratch - schema to UI, • Working directly with founders on product decisions and trade-offs, • Refining architecture as the platform scales (multi-tenant + AI-heavy), • Shipping to production fast and often, • Experimenting with AI tools to accelerate engineering Why This Team? • You’ll build complex, high-value product used by serious customers, • Join a small, elite group that genuinely cares about craft and velocity, • Be early enough that what you do actually moves the business