17 of 17 Product Engineer Jobs in the City of London

Full-Stack Product Engineer Opportunity Are you a passionate Full Stack Engineer ready to make a significant impact in the AI domain? Role Highlights: Position: Full-Stack Product Engineer Location: Hybrid (London HQ) Salary: £65,000 – £75,000 + Equity Tech Stack: Python, Javascript, Elixir, Phoenix, Vue.js, PyTorch Experience: 5+ years in full-stack development More ❯

Full Stack Product Engineer (Stealth AI Startup) 📍 London, UK (On-site, 5 days/week) About the Role Join a small, high-performing product engineering team at an early-stage AI startup (currently in stealth). As the third engineer on a close-knit London-based platform team, you’ll play a pivotal role in building … and iterating on a powerful, user-facing platform from the ground up. This is an opportunity to help define the architecture and direction of a product with the potential to reshape how AI is deployed in complex business environments. We’re building technology around cutting-edge AI workflows that require deep technical ownership and creativity. What You’ll Do … Build end-to-end product features across the stack (frontend, backend, data) Work closely with founders and engineers to ship fast, iterate quickly, and influence product direction Solve novel technical challenges related to scaling, performance, and usability Contribute to a product that leverages AI in practical, real-world workflows You Might Be a Fit If You Have More ❯

Graduate IT Operations/Product Engineer – Electronic Trading Location: Onsite, Central London Salary: £40,000 – £60,000 DOE Start Date: Immediate/Flexible Are you a technically minded graduate or early-career professional with an interest in trading systems, execution workflows, and data analysis? A fast-growing and well-backed fintech firm is looking for a Graduate Operations …/Product Engineer to join their London office. This is a rare opportunity to work directly with the Head of Execution and gain deep exposure to real-world trading infrastructure and performance analytics. About the Role: You’ll play a pivotal role supporting and enhancing institutional-grade trading products and execution systems. Your day-to-day will include … Building out product and technical specifications Managing technical operations across Windows and Linux environments Engaging with cloud-based infrastructure (Azure/AWS) Supporting TCA (Transaction Cost Analysis) and performance analytics Collaborating on trade execution workflows Contributing to data analysis using SQL, Python, or R This is not a siloed position — you’ll be at the heart of the action More ❯

Product Engineer | AI-Powered Innovation in Finance 📍 London (Hybrid/On-Site) A high-growth AI company—trusted by 40% of the top 50 global financial institutions—is hiring a Product Engineer to join their elite, cross-functional team. Their mission? To redefine how the financial world works by replacing manual, complex workflows with intelligent, agentic … Build and ship real-world AI applications—end-to-end—from prototype to production Translate messy problems into powerful, scalable systems using LLMs and full stack tools Act as engineer, strategist, and product partner all in one Work closely with founders, researchers, and AI engineers at the forefront of innovation ✅ What They’re Looking For 4+ years of More ❯

contact-centre as a service platform that automates contact operations across voice, email, chat and SMS, enabling humans in the loop where necessary. Overview: We’re hiring for a Product Engineer (backend C# .net core) to join our founding team. The role will focus on backend development that blends email, chat, telephony, voice AI and LLMs. You’ll … play a key role in building core product functionality, from low-latency backend services to real-time communications and third-party integrations. If you’re proactive, technically strong, and excited about building high-impact systems in a startup environment, this role is for you. Key Responsibilities: Communicate clearly, seek clarification when needed. Navigate ambiguity and working with minimal supervision. More ❯

in search of the best people to join our ever-growing talented team. We’re spinning up a brand-new AI department and need a first-on-the-ground engineer who can turn wild LLM ideas into working demos overnight, teach everyone around you why automation matters, and have fun doing it. If you can ship Python or TypeScript More ❯

Senior Product Engineer Python, TypeScript, React, Next.js Health-Tech We have partnered with an exciting Health-Tech start-up to build out their Product Engineering team to support their recent series A raise & ambitious growth plans🚀 Why it’s exciting They’re tackling one of the most emotionally and financially challenging areas in healthcare: fertility. Their mission … to make starting a family more accessible, while also improving operational efficiency across the fertility care ecosystem. ⚙️Stack: Python, TypeScript, React, Next.js AWS About you... 🛠 Experience as a Fullstack Product Engineer, ideally with some frontend experience too (nice to have) 📲 You've worked on a consumer product or love delving into user needs and bringing them to … life through code 💻 You’ve got strong experience with Python, TypeScript, React, AWS, PostgreSQL 🌱 You want to join a small but mighty product-engineering team ✨ You want ship meaningful features with real customer impact, and contribute to shaping both product and technical direction The package £65,000–£90,000 + equity Private healthcare, fertility support/testing, enhanced More ❯

Founding Engineer – Stealth AI Startup | London | £100–200k Location : London (Onsite) Compensation : £100,000–£200,000 + meaningful equity Start date : Flexible, but ideally soon I'm hiring for a stealth-stage AI startup founded by two individuals who have worked at some of the biggest names in the space. Backed by deep technical roots and a bold vision … with AI, by teaching systems directly through human decision-making. They are a small team with less than 10 heads, and they're now looking for a founding-level engineer to join the core London team. Tech stack: Frontend : React, Next.js, TypeScript Backend : Python, FastAPI Happy for candidates to lean towards to backend or the frontend Why this role … tech that’s pre-launch but already being used by early design partners. Truly novel approach : Building systems that learn from human behaviour rather than traditional fine-tuning. Deep product involvement : Ship fast, iterate constantly, and help define how AI will interface with the enterprise. If you're a Full Stack Product Engineer who thrives in fast More ❯

Role: Senior Product Engineer Salary range: £100,000 - £160,000 Location: 4-5 days on site, Kings Cross Tech stack: Flexible A mission-driven firm is hiring a Senior Product Engineer to help build the systems and tools that support a new wave of companies tackling humanity’s biggest challenges, from decarbonization and bioengineering to machine … and planetary health. They are a small team of technologists, operators, and scientists backing and building alongside deep tech startups at the earliest stages. You’ll be the fourth engineer on the team, with the opportunity to design and own core products and infrastructure from the ground up. This role blends product-minded engineering with startup-level autonomy. … changing companies scale faster and smarter. What you'll do: Architect, build, and maintain scalable internal and external-facing tools Collaborate directly with technical founders, scientists, and investors Drive product discovery with a mix of engineering insight and experimentation Lead technical design decisions and mentor junior team members over time Contribute to a long-term vision of enabling impact More ❯

We’re hiring a Full Stack Product Engineer (Python, React, Next.js, TypeScript, FastAPI, Postgres) to join the founding team of a London based , early stage startup publicly launching in a few months (they're currently in stealth mode ). Led by former heads of Palantir’s AI Engineering team , they're building a new type of platform to … saw as the biggest bottleneck to getting AI into production : teaching models what you actually want them to do. They’ve raised $6.5M in early funding , are deep in product build mode, and are looking for a curious, product-minded engineer to join as their third technical hire . What you’ll do Build core product … on-site in London (they genuinely enjoy working + lunching together) What we're looking for Experience at a startup that's scaled or been through funding rounds Strong product intuition and attention to detail with highly customer orientated focus Experienced integrating or building AI platforms/features Full stack experience on our stack (Python, React, Next.js, TypeScript, FastAPI More ❯

days a week. We exist to give engineers superpowers. Our mission is to vastly accelerate hardware invention by building critical software infrastructure that accelerates foundational engineering processes. Our product, is a collaboration platform that helps teams to bring products to market faster by seamlessly integrating and synchronising their engineering models. 👩‍💻 About Engineering at Flow We care deeply about our … world’s top hardware engineers (our users), understand how they work, their pains, and ship solutions to those pains You’ll know our customers, how they feel about the product, and what milestones they need to hit to get their own product(s) to market. You’ll know what our sales pipeline looks like, and what features matter …/when you don’t, you’re not afraid to say so - others probably don’t either Good communicator - clear, concise, courteous. 2+ year(s) experience as a Software engineer 💡 How we think How to Build an MVP (Michael Seibel) Code-first vs Product-first (Zach Lloyd) Simple Made Easy (Rich Hickey) (First 25mins) 🖥️ Our Tech Stack Golang More ❯

Lead & Principal Frontend Focussed Fullstack Product Engineers (React/TypeScript) - £80 -140K + Equity + Benefits Hybrid (3 days/week in London) The Opportunity We're looking for Lead and Principal engineers to help shape the future of our brand-new platform - one with zero tech debt, a strong engineering culture, and serious backing (pre-seed valuation … 25m). This is a chance to have real ownership across product strategy, technical direction, and user experience, working closely with a tight-knit team of engineers who ship fast, think deeply, and care about craft. We’re building a B2B SaaS Martech product that helps marketing teams drive growth with less guesswork. If you’ve worked on … products and love startup energy, you’ll fit right in. What We’re Looking For Strong experience with React and TypeScript (Next.js a bonus) Solid engineering fundamentals and a product mindset Happy to work across the stack - ideally with Go (but if you’re fullstack in JS/Node/Express, with React on the front, we’ll teach More ❯

Senior/Lead Product Engineer - HealthTech - Fully Remote Salary: £80,000 - £110,000 + Equity Industry: HealthTech/Tech for Good 🏥 Location: Fully Remote UK with Offices in London Tech Stack: GO, React, TypeScript, Node.js 🚀 Company Overview 🌱 Our client is an early-stage, VC-backed AI startup on a mission to redefine the wellness space. Backed by top … and already seeing strong early traction, they’re blending AI with beautifully crafted products to create a super impactful platform. They’re now looking for a Senior/Lead Product Engineer to join their growing team and help drive the next phase of growth. The Role 🛠 Early stage startup hire — huge ownership and autonomy Working closely with the … founders to bring the product vision to life GO backend, TypeScript/React frontend - open to Node.js experience on Backend too Must be able to operate in a full stack environment React Native is a bonus Desired Skills 🎯 GO React TypeScript/Node AWS This role is moving fast — if you’re looking for a big mission, early equity More ❯

Staff Product Engineer | B-Corp Start-Up | Net-Zero Carbon Up to £125,000 plus stock London – Hybrid (2 days a week in the office) Typescript, Node, React, GraphQL & GCP Staff Product Engineer – We are working with an amazing Carbon Neutral, B-Corp certified start-up to find them a Staff Product Engineer to … as they reach breakeven in the original market, they have some exciting tech challenges in scaling their sustainable platform as they look to expand their reach. As a Staff Product Engineer in a start-up your role will be multi-faceted: Designing and building new features to improve the lives of everyone who uses the platform, whether it … of an early-stage start-up. You have experience building backend services and APIs and are comfortable writing code for the frontend or building the infrastructure. You have a product mindset and are always thinking about how the solution will benefit the customer. You’re comfortable releasing something that might not be perfect! This is an amazing opportunity to More ❯

We are delighted (understatement) to be supporting the UK's fastest growing start-up to recruit a Staff Product Engineer. Our client, based in Chancery Lane, London , is building an AI productivity tool. Integrating seamlessly inside Gmail, Outlook and Zoom, it organises your inbox, drafts incredible emails and writes better-than-human meeting notes, giving its users at least … securing their Series A round of $10m in Feb 2025 - growing from $1m - $10m ARR in 5 months. Prominent CEOs, founders and tech influencers are all raving about the product, calling it a 'masterpiece' that 'might just fix email forever.' They are backed by some of the most prominent investors in tech, including key figures in Silicon Valley and … the most well-known investors in the UK. This role reports directly to the CTO. WHAT WILL YOU BE DOING? As Staff Product Engineer , you will own one of the company's most important products and take on meaningful responsibilities from day one, with opportunities to grow faster than at most other companies. You will own both product More ❯

for Founding Engineers who: Are deeply curious and passionate about building products users truly love Get frustrated when things don’t move fast enough Want their voice to shape product decisions, tech choices, and company culture Enjoy the freedom and challenge of working across the stack, from intuitive UX and robust API design to AI architectures and prompt engineering More ❯

AI Fullstack Product Engineers - Userled - 80-100K + Bens + Equity - London Hybrid (3 days in the office) Userled is reinventing B2B marketing with Generative AI Marketing early stage start-up, helping enterprise teams reach high-intent buyers through hyper-personalised, multi-channel campaigns. We’re building an AI-first platform from the ground up, with LLMs powering … everything from content generation to strategic recommendations. We’re looking for hands-on AI Fullstack Product Engineers who’s excited to build, ship, and fully own production-grade AI features. You’ll have complete autonomy to design and launch intelligent agents, use cutting-edge LLM tools, and shape the future of our product in a role that’s … and OpenAI/Anthropic APIs. You’ll build and orchestrate intelligent agents and RAG pipelines, moving quickly to prototype, test, and launch in days, not months. Working closely with product, design, and go-to-market teams, you’ll build features that solve real customer problems and contribute directly to our AI roadmap and long-term technical direction. You might More ❯