1 to 25 of 56 Senior Full-Stack Engineer Jobs in the City of London

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options Remote First – London Office for those who want it Next.js | React | Typescript | Node Are you a product-focused Senior Full … who enjoys autonomy and wants to build products from end-to-end? If so, read on... Senior Full Stack Engineer – We have been exclusively engaged by one of the most exciting tech start-ups in the UK, who are looking for … and iterating, working closely with product and customers, to evolve their cutting-edge AI solutions. What is Senior Full Stack Engineer for them? The Senior Full Stack Engineer will have experience of building complex More ❯

Senior Fullstack Engineer Salary: Up to £120k Location: On-site (London) Must have a degree Senior Fullstack Engineer - would you like the opportunity to work for a start-up who are currently going through a rapid period of growth? They are looking … who will work closely with the creative team, solving interesting problems at the intersection of user experience, machine learning and infrastructure. As a Senior Software Engineer, you will get a lot of responsibility and work in an award-winning team. Their stack cuts across … working with React, TypeScript. Experience working with Python or Go. Previous experience with C++ would also be a bonus If you’re a Senior Fullstack Engineer who enjoys working in start-ups, please apply. More ❯

I am exclusively working with an Online Marketplace (C2C) who are looking for a Senior Full-Stack Engineer to join their team! You'll predominately be brought on board to work on their core platform and online marketplace. They are a Certified … and its a fantastic opportunity to join a really great team! They are looking for a Senior Engineer - Full-Stack and working on both the front and backend They are FULLY REMOTE and do not have office expectations. With this in mind … interview process that will include a 30 min call with their CTO followed by a 90 minute technical/culture chat with their Senior Engineers & CTO They are offering up to £78,000 + bonus + a FULLY REMOTE role More ❯

I am exclusively working with an Online Marketplace (C2C) who are looking for a Senior Full-Stack Engineer to join their team! You'll predominately be brought on board to work on their core platform and online marketplace. They are a Certified … and its a fantastic opportunity to join a really great team! They are looking for a Senior Engineer - Full-Stack and working on both the front and backend They are FULLY REMOTE and do not have office expectations. With this in mind … interview process that will include a 30 min call with their CTO followed by a 90 minute technical/culture chat with their Senior Engineers & CTO They are offering up to £78,000 + bonus + a FULLY REMOTE role More ❯

Senior Full-Stack Engineer (TypeScript & LLM Integration) I am currently recruiting on behalf of a forward-thinking technology company that is pioneering the integration of AI into B2B software solutions. We are seeking a highly skilled Senior Full-Stack Engineer with a strong foundation in TypeScript and a keen interest in working with Large Language Models (LLMs). This role offers the opportunity to contribute to a unified codebase that supports both a robust SaaS platform and advanced AI capabilities. You will … Experience deploying and fine-tuning custom AI models Background in developing B2B software platforms with multi-user functionality If you are a driven engineer looking to work at the intersection of modern web development and AI innovation, I would be delighted to discuss this opportunity with you further More ❯

Social network you want to login/join with: Senior Full-Stack Engineer - AI Startup - TypeScript/LLM - £120k - Fully Remote, london (city of london) col-narrow-left Client: Opus Recruitment Solutions Location: london (city of london), United Kingdom Job Category: Other … technology company that is pioneering the integration of AI into B2B software solutions. We are seeking a highly skilled Senior Full-Stack Engineer with a strong foundation in TypeScript and a keen interest in working with Large Language Models (LLMs). This … Experience deploying and fine-tuning custom AI models Background in developing B2B software platforms with multi-user functionality If you are a driven engineer looking to work at the intersection of modern web development and AI innovation, I would be delighted to discuss this opportunity with you further More ❯

Role: Senior Full Stack Engineer (Node/React) 🌍 Location: London (Hybrid - 3 days per week) 💰 Salary: £70,000 - £80,000 per annum, plus benefits 🛠 Key Skills: TypeScript, JavaScript, React, Node, SQL/NoSQL 🎵 Industry: Music-tech 🎧 Unique Opportunity: Senior Full … Edge Tech We’re partnering with an industry-leading music-tech company on the lookout for a Senior Full Stack Engineer to join their creative and purpose-driven team. This is a rare chance to work on products that empower people to … play and create music in ways never done before. As the Senior Full Stack Engineer, you'll be working across a modern stack – TypeScript, React, Node.js, NoSQL – helping build and scale high-performance platforms that sit at the heart of More ❯

Full Stack Engineer – Agentic AI-Powered FinTech Location: London/Hybrid (2 days per week in the office) Up to £130,000 per annum plus stock options Typescript | Node | React | Next.js | AWS | GraphQL Senior Full Stack Engineer … human analysts to generate insights, drive decisions and transform workflows. This is a unique opportunity for a Senior Full Stack Engineer who’s eager to work on ambitious, meaningful problems at the intersection of AI, UI/UX innovation, and financial software. … s the opportunity? As part of a small, senior-led product and engineering team, the Senior Full Stack Engineer will: Architect and implement responsive, AI-enabled interfaces using React, NextJS, and TypeScript Develop robust backend services with Node.js, connecting to More ❯

Senior Android Engineer, Jetpack Compose | Full Stack | Carbon Reducing, B2B, Series A | Salary up to £125,000 + Equity, Bonus, Benefits | London, Hybrid (2 days PW) The Company We are working with a Series A backed scale-up, that has raised over … responsibilities with Backend (Python) API's, improving FE code, all the way down to Data Infrastructure. This is a true Software Engineer role, where you will wear many hats! While mobile development will be your main focus, they want to give engineers the opportunity to learn … across stack. Requirements for the Senior Android Engineer, Jetpack Compose | Full Stack | Carbon Reducing, B2B, Series A | Salary up to £125,000 + Equity, Bonus, Benefits | London, Hybrid (2 days PW) Minimum 4 years experience working in high-performing software teams. Ideally More ❯

Senior Android Engineer, Jetpack Compose | Full Stack | Carbon Reducing, B2B, Series A | Salary up to £125,000 + Equity, Bonus, Benefits | London, Hybrid (2 days PW) The Company We are working with a Series A backed scale-up, that has raised over … responsibilities with Backend (Python) API's, improving FE code, all the way down to Data Infrastructure. This is a true Software Engineer role, where you will wear many hats! While mobile development will be your main focus, they want to give engineers the opportunity to learn … across stack. Requirements for the Senior Android Engineer, Jetpack Compose | Full Stack | Carbon Reducing, B2B, Series A | Salary up to £125,000 + Equity, Bonus, Benefits | London, Hybrid (2 days PW) Minimum 4 years experience working in high-performing software teams. Ideally More ❯

Senior Full-stack Engineer Location : Remote Job Type : Full-time Help us reinvent the CFO🚀 At Nume, we’re pioneering the world’s first AI CFO. Not a chatbot or a dashboard, but a proactive thought partner that founders can … comprehensive platform while contributing to our AI architecture - a state-of-the-art, autonomous and goal-driven system. You'll bring deep full-stack expertise and help us accelerate development across our entire technology stack. Key Responsibilities: Build and enhance our application Develop robust front-end … systems that will serve thousands of users Support AI system integration and contribute to prompt engineering efforts Required Qualifications: 5+ years developing full-stack software applications Expert-level Python skills Strong experience with modern web frameworks (FastAPI, Django, Flask) Proficiency in frontend technologies (React, TypeScript, JavaScript More ❯

Senior Full Stack Engineer | $60m BioTech Startup - Synthetic Biology 💻 Senior Full Stack Engineer 🧬 $60m funded BioTech - Revolutionary synthetic biology 💰 Industry leading compensation package - Enquire for details 📍 3 Days per week - Central London ⚙️ Stack … in medicine, anatomical understanding, drug development and general biological research for generations. We are looking for a Senior Full Stack Engineer, proficient in a Typescript, React and Python based stack with Kubernetes and AWS . Experience with 3D rendering and … understanding and unlock new possibilities in areas such as molecular biology and genetic engineering. Are you a Senior Full Stack Engineer keen to contribute to the future of biological research and understanding? Apply within or reach out to James for more information More ❯

Senior Full Stack Engineer (GROWTH) | Tech For Good (E-Commerce Start-Up) | React.js/Next.js/TypeScript/PostgresSQL | LDN 3 Days Per Week | £85K - £95K Company I'm currently working with one of the UK’s fastest-growing start-ups on … Commerce Start-Up) | React.js/Next.js/TypeScript/PostgresSQL | LDN 3 Days Per Week | £85K - £95K Your role: ->Design and build full-stack features that optimize customer acquisition and conversion. ->Use your TypeScript and React expertise to craft compelling, high-performing user experiences. ->Write and … relational databases (PostgreSQL preferred) and confident SQL abilities. ->Deep understanding of UX principles and their effect on growth metrics. ->Proven experience building full-stack applications in a fast-paced environment. ->Analytical mindset with a passion for using data to drive decisions. ->A degree from a top More ❯

Senior Full Stack Engineer | VC Funded Gifting/Rewards | Remote 💻 Senior Full Stack Engineer 🎁 Gifting/Rewards Platform 🌍 Remote First - (UK) 💰 Up to £110,000 p/a ⚙️ Stack: Typescript, Node, React … teams and clients with meaningful gifts, vouchers and unique experiences. We are looking for a backend leaning Senior Full Stack Engineer, proficient in Typescript, Node, React with cloud experience to join a growing team of customer-centric, cross functional engineers. If you … are a Senior Full Stack Engineer looking to join a thriving company working to improve employee satisfaction across the country, this will be a perfect opportunity. Interested and available to start within a month? Apply within or reach out to James for More ❯

Senior Full Stack Engineer | VC Funded Gifting/Rewards | Remote, London (City of London) Client: Burns Sheehan Location: London (City of London), United Kingdom Job Category: Other EU work permit required: Yes Job Views: 2 Posted: 23.05.2025 Expiry Date: 07.07.2025 Job Description … Senior Full Stack Engineer | VC Funded Gifting/Rewards | Remote Role: Senior Full Stack Engineer with backend focus Platform: Gifting and rewards platform enabling businesses to reward, support, and celebrate teams and clients with … celebrate their employees and clients with meaningful gifts, vouchers, and unique experiences. We seek a backend-leaning Senior Full Stack Engineer skilled in Typescript, Node.js, React, and Fastify, with cloud experience, to join a growing team of customer-centric, cross-functional engineers. More ❯

Senior Full Stack Engineer (GROWTH) | Tech For Good (E-Commerce Start-Up) | React.js/Next.js/TypeScript/PostgresSQL | LDN 3 Days Per Week | £85K - £95K Company I'm currently working with one of the UK’s fastest-growing start-ups on … Commerce Start-Up) | React.js/Next.js/TypeScript/PostgresSQL | LDN 3 Days Per Week | £85K - £95K Your role: ->Design and build full-stack features that optimize customer acquisition and conversion. ->Use your TypeScript and React expertise to craft compelling, high-performing user experiences. ->Write and … relational databases (PostgreSQL preferred) and confident SQL abilities. ->Deep understanding of UX principles and their effect on growth metrics. ->Proven experience building full-stack applications in a fast-paced environment. ->Analytical mindset with a passion for using data to drive decisions. ->A degree from a top More ❯

Senior Full-Stack Engineer (TypeScript & LLM Integration) £80-110K + Equity A hugely exciting AI start-up is seeking several experienced Full-Stack Engineers to join a dynamic product team, focused on building innovative software powered by More ❯

Senior Mobile Engineer - opportunity to work with Flutter | Full stack, Data/AI | Carbon Reducing B2B, Huge Series A | Salary up to £125,000 + Equity, Bonus, Benefits | London, Hybrid (3 days PW) The Company We are working with a Series A … stack responsibilities with Backend API's, improving FE code, all the way down to Data Infrastructure. This is a true Software Engineer role, where you will wear many hats! Requirements for the Senior Mobile Engineer (opportunity to work with Flutter) | Full … Benefits 3 Days Hybrid Working in the central London Office Health Insurance Dental Insurance Competitive Pension Contribution If you are interested in the Senior Mobile Engineer (opportunity to work with Flutter), please apply here and we will reach out to you if we think it will More ❯

Senior Mobile Engineer - opportunity to work with Flutter | Full stack, Data/AI | Carbon Reducing B2B, Huge Series A | Salary up to £125,000 + Equity, Bonus, Benefits | London, Hybrid (3 days PW) The Company We are working with a Series A … stack responsibilities with Backend API's, improving FE code, all the way down to Data Infrastructure. This is a true Software Engineer role, where you will wear many hats! Requirements for the Senior Mobile Engineer (opportunity to work with Flutter) | Full … Benefits 3 Days Hybrid Working in the central London Office Health Insurance Dental Insurance Competitive Pension Contribution If you are interested in the Senior Mobile Engineer (opportunity to work with Flutter), please apply here and we will reach out to you if we think it will More ❯

Senior Full Stack Engineer Salary £80k to £85k + Bonus and excellent pension/benefits Location: Central London About the client Our client is an infrastructure communications technology company providing end-to-end fibre solutions and now Cloud solutions, Wi-Fi, Firewalls … wholesale/carrier/channel organisations across London. What you will do: We are looking for a Senior Full Stack Engineer to own end-to-end delivery of critical features, drive architectural excellence, and establish best practices. You ll work hands-on … success to translate requirements into robust technical solutions. A good fit candidate will have: 5+ years hands-on as a full stack engineer in a SaaS environment Expert in React (hooks, state management, performance) Strong backend skills in Node.js (Express) and Python (FastAPI, Celery More ❯

Senior Full Stack Engineer - London (Hybrid) - Up to £90k A well funded start up who are revolutionising real estate transactions through cutting-edge technology combining sophisticated AI capabilities with robust financial data systems are looking for a Senior Full Stack Engineer to join their team. What will I be doing: Design, develop, test, deploy, and maintain robust and scalable backend systems and APIs using Python Build intuitive, performant, and delightful frontend user interfaces using modern JavaScript frameworks like React Work with databases to … Ensure quality and performance of code through comprehensive testing and monitoring What are we looking for: At least 5+ years in professional full-stack software development Strong proficiency in Python for backend development Experience with modern frontend frameworks (React, Vue, Angular) Solid understanding of database technologies More ❯

Senior Full Stack Engineer | up to £110k + equity | Hybrid, London I'm looking for a Senior Full Stack Engineer to join a well-respected online retailer. Your team will be a part of More ❯

Senior Fullstack Engineer | £80,000 – £95,000 + Equity | TypeScript | React Native | Node.js | Serverless | Hybrid (1-2 Days in London) Join one of Europe’s most exciting consumer fitness startups—fresh off a £5M fundraise, recognised by Apple as a finalist for Global App of the … live, they’re scaling their engineering team to take their platform to the next level. This is a rare opportunity to build full-stack features across mobile, web, and backend systems—in a mission-led, product-obsessed, high-performance team. 🧑‍💻 What You’ll Do: Design, build … Tooling: GitHub Actions, Fastlane, Sentry, Mixpanel, Intercom, Maestro E2E, Terraform ✅ What You Bring: 4+ years of software engineering experience (frontend, backend or full-stack) Strong TypeScript and JavaScript skills Proven ability to ship end-to-end features across the stack Comfort working in fast More ❯

squads focus on delivering high-impact features – we favour a highly iterative, analytical approach. We're looking for a Senior Full-stack Engineer to join our Development team. Principal Accountabilities: • Build robust and scalable software for business critical, web-based applications • Build … Ki’s core technologies • Mentor and coach colleagues in both engineering and business domain subjects Required Skills and Experience: • Experience as a mid-senior level engineer working across a modern web stack • Strong software engineering principles (SOLID, DRY, ER modelling) • Professional experience with a More ❯

Snr Full-Stack Engineer (UI Focussed) London (Hybrid - 1x PW in office) A leading Legal AI scale up is on a mission to make legal help universally accessible to all. Combining legal professionals with cutting-edge AI, this fast-growing company is redefining how … they’re expanding fast, and hiring an incredible team of passionate engineers. Now hiring a Snr Full-Stack Engineer (UI focussed) to shape the future of AI-powered legal experiences. What you’ll be doing: Crafting beautiful, fast, user-focused apps and experiences Solve More ❯