1 to 25 of 812 Permanent Full Stack Engineer Jobs in London

Founding Full Stack Engineer – Consumer AI (Stealth Mode) London – 2-3 days a week in the office Up to £120,000 plus generous stock options .Net Core | Azure | Typescript | React Native | Python Are you a Full Stack Engineer ready to build something radically new in AI and consumer … tech? Founding Full Stack Engineer – We are working with a stealth-mode, consumer AI start-up backed by top-tier US and European VCs to find a Full Stack Engineer to join the Founding team. Their mission is to help people make smarter spending decisions with the help … deeply personalized, socially intuitive, and powered by the latest in generative AI. This is a massive, untapped opportunity in a $1tr+ category. They are looking for a Founding Full Stack Engineer to help shape the product, stack and culture from day one. You don’t need to cover all of the below More ❯

Founding Full Stack Engineer – Consumer AI (Stealth Mode) London – 2-3 days a week in the office Up to £120,000 plus generous stock options .Net Core | Azure | Typescript | React Native | Python Are you a Full Stack Engineer ready to build something radically new in AI and consumer … tech? Founding Full Stack Engineer – We are working with a stealth-mode, consumer AI start-up backed by top-tier US and European VCs to find a Full Stack Engineer to join the Founding team. Their mission is to help people make smarter spending decisions with the help … deeply personalized, socially intuitive, and powered by the latest in generative AI. This is a massive, untapped opportunity in a $1tr+ category. They are looking for a Founding Full Stack Engineer to help shape the product, stack and culture from day one. You don’t need to cover all of the below More ❯

Founding Full Stack Engineer – Consumer AI (Stealth Mode) London – 2-3 days a week in the office Up to £120,000 plus generous stock options .Net Core | Azure | Typescript | React Native | Python Are you a Full Stack Engineer ready to build something radically new in AI and consumer … tech? Founding Full Stack Engineer – We are working with a stealth-mode, consumer AI start-up backed by top-tier US and European VCs to find a Full Stack Engineer to join the Founding team. Their mission is to help people make smarter spending decisions with the help … deeply personalized, socially intuitive, and powered by the latest in generative AI. This is a massive, untapped opportunity in a $1tr+ category. They are looking for a Founding Full Stack Engineer to help shape the product, stack and culture from day one. You don’t need to cover all of the below More ❯

Founding Full Stack Engineer – Consumer AI (Stealth Mode) London – 2-3 days a week in the office Up to £120,000 plus generous stock options .Net Core | Azure | Typescript | React Native | Python Are you a Full Stack Engineer ready to build something radically new in AI and consumer … tech? Founding Full Stack Engineer – We are working with a stealth-mode, consumer AI start-up backed by top-tier US and European VCs to find a Full Stack Engineer to join the Founding team. Their mission is to help people make smarter spending decisions with the help … deeply personalized, socially intuitive, and powered by the latest in generative AI. This is a massive, untapped opportunity in a $1tr+ category. They are looking for a Founding Full Stack Engineer to help shape the product, stack and culture from day one. You don’t need to cover all of the below More ❯

Full Stack Engineer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native Why? scaling FinTech, revolutionising the industry Location : Hybrid - 1-2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings aimed at delivering fair, flexible, and user-friendly financial … products to consumers. The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Full Stack Engineer - Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Optimize components for maximum performance across a vast … highest quality. Troubleshoot and debug to optimize performance. Provide code reviews, feedback, and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols Full Stack Engineer - Experience Required Proven experience as a Full Stack Engineer or similar role with a strong portfolio of More ❯

Senior Full Stack Engineer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native Why? scaling FinTech, revolutionising the industry Location : Hybrid - 1-2 days in the office (Central London) Our Client A new UK-based financial services provider is launching credit card, personal loans and insurance offerings aimed at delivering fair, flexible, and user-friendly … financial products to consumers. The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Senior Full Stack Engineer - Responsibilities Design, develop, and maintain advanced applications. Collaborate with cross-functional teams to define, design, and ship new features. Guide and develop the skills of … speed. Troubleshoot and debug to optimize performance. Provide code reviews, feedback, and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols Senior Full Stack Engineer - Experience Required Proven experience as a Senior Full Stack Engineer or similar role with a strong portfolio More ❯

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js | React | Typescript | Node Are you a product-focused Senior Full Stack Engineer 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 Senior Full Stack Engineers as they continue to grow significantly in 2025. They are well-funded, revenue-generating … and have found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They More ❯

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js | React | Typescript | Node Are you a product-focused Senior Full Stack Engineer 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 Senior Full Stack Engineers as they continue to grow significantly in 2025. They are well-funded, revenue-generating … and have found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They More ❯

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js | React | Typescript | Node Are you a product-focused Senior Full Stack Engineer 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 Senior Full Stack Engineers as they continue to grow significantly in 2025. They are well-funded, revenue-generating … and have found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They More ❯

Senior Full Stack Engineer – THE AI Scale-Up of 2025 | Future Unicorn Up to £125,000 plus excellent stock options London Office - 2 days a week Next.js | React | Typescript | Node Are you a product-focused Senior Full Stack Engineer 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 Senior Full Stack Engineers as they continue to grow significantly in 2025. They are well-funded, revenue-generating … and have found product market fit for their industry disrupting, AI-powered SaaS platform. The Senior Full Stack Engineers will have a high degree of autonomy, using modern technology like Next.js, React and Typescript to build new products and features across the stack, making decisions to deliver outstanding user experience to their customers. They More ❯

Senior Full Stack Engineer | AI SaaS | Typescript/React/Node Senior Full Stack Engineer Up to £90,000 per annum + Equity d.o.e Required Skills: Typescript, React, Node AI-Powered SaaS for thriving sectors We’re working with a fast-growing SaaS company building AI-powered workflow … across stakeholders. Adopted by leading firms across Europe, the company is scaling quickly and expanding its engineering team to meet demand. They’re now looking for a Senior Full Stack Engineer to help evolve the core product, extend automation capabilities, and support new data-driven features. What you’ll be doing as a Senior … Full Stack Engineer: Designing and building modern full stack systems using React, Node, and Typescript Developing scalable APIs and backend services to manage structured financial and legal data Building secure, performant interfaces that give users real-time visibility into complex workflows Collaborating with Product and Design to turn intricate user More ❯

Senior Full Stack Engineer | AI SaaS | Typescript/React/Node Senior Full Stack Engineer Up to £90,000 per annum + Equity d.o.e Required Skills: Typescript, React, Node AI-Powered SaaS for thriving sectors We’re working with a fast-growing SaaS company building AI-powered workflow … across stakeholders. Adopted by leading firms across Europe, the company is scaling quickly and expanding its engineering team to meet demand. They’re now looking for a Senior Full Stack Engineer to help evolve the core product, extend automation capabilities, and support new data-driven features. What you’ll be doing as a Senior … Full Stack Engineer: Designing and building modern full stack systems using React, Node, and Typescript Developing scalable APIs and backend services to manage structured financial and legal data Building secure, performant interfaces that give users real-time visibility into complex workflows Collaborating with Product and Design to turn intricate user More ❯

Senior Full Stack Engineer | AI SaaS | Typescript/React/Node Senior Full Stack Engineer Up to £90,000 per annum + Equity d.o.e Required Skills: Typescript, React, Node AI-Powered SaaS for thriving sectors We’re working with a fast-growing SaaS company building AI-powered workflow … across stakeholders. Adopted by leading firms across Europe, the company is scaling quickly and expanding its engineering team to meet demand. They’re now looking for a Senior Full Stack Engineer to help evolve the core product, extend automation capabilities, and support new data-driven features. What you’ll be doing as a Senior … Full Stack Engineer: Designing and building modern full stack systems using React, Node, and Typescript Developing scalable APIs and backend services to manage structured financial and legal data Building secure, performant interfaces that give users real-time visibility into complex workflows Collaborating with Product and Design to turn intricate user More ❯

Senior Full Stack Engineer | AI SaaS | Typescript/React/Node Senior Full Stack Engineer Up to £90,000 per annum + Equity d.o.e Required Skills: Typescript, React, Node AI-Powered SaaS for thriving sectors We’re working with a fast-growing SaaS company building AI-powered workflow … across stakeholders. Adopted by leading firms across Europe, the company is scaling quickly and expanding its engineering team to meet demand. They’re now looking for a Senior Full Stack Engineer to help evolve the core product, extend automation capabilities, and support new data-driven features. What you’ll be doing as a Senior … Full Stack Engineer: Designing and building modern full stack systems using React, Node, and Typescript Developing scalable APIs and backend services to manage structured financial and legal data Building secure, performant interfaces that give users real-time visibility into complex workflows Collaborating with Product and Design to turn intricate user More ❯

Role: Full Stack Software Engineer Salary: circa £80,000 to £90,000 per annum, depending on experienceLocation: fully remote, with occasional visits to Basingstoke We are looking for a skilled Full Stack Software Engineer to design and develop cutting-edge products with a focus on Python , PostgreSQL and … front-end development. You'd be working in a flexible, remote-first environment, tackling interesting and complex challenges within a small, highly skilled team. The Full Stack Software Engineer role involves building a query interface for a large internal backend data system. It requires engaging with technical stakeholders to understand their data access needs … translating those into actionable requirements, and delivering a solution that includes both backend logic and a functional user-facing front end. This is a full-time permanent Full Stack Software Engineer position, paying between circa £80,000 - £90,000 per annum, depending on experience. For this role, you must be eligible and More ❯

Role: Full Stack Software Engineer Salary: circa £80,000 to £90,000 per annum, depending on experience Location: fully remote, with occasional visits to Basingstoke We are looking for a skilled Full Stack Software Engineer to design and develop cutting-edge products with a focus on Python , PostgreSQL … and front-end development. You'd be working in a flexible, remote-first environment, tackling interesting and complex challenges within a small, highly skilled team. The Full Stack Software Engineer role involves building a query interface for a large internal backend data system. It requires engaging with technical stakeholders to understand their data access … needs, translating those into actionable requirements, and delivering a solution that includes both backend logic and a functional user-facing front end. This is a full-time permanent Full Stack Software Engineer position, paying between circa £80,000 - £90,000 per annum, depending on experience. For this role, you must be eligible More ❯

JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote JavaScript Full-Stack Engineer required for a fully remote role in a well-backed Climate-Tech team, you will be looking to join a positive impact business with an exceptional JavaScript/React/Next.js engineering team where … there’s potential for this position to evolve into a leadership role in customer success. About you: 5+ years in software development Experience building products end-to-end Full-stack engineer with Strong React/Next.js, experience with Tailwind and UI best practices would be highly beneficial Experience with cloud infrastructure (AWS/Azure …/GCP), DevOps and data/ML workflows Happy to liaise with clients If you can see yourself in a mission-led, impact-focused team, apply now! JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote More ❯

JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote JavaScript Full-Stack Engineer required for a fully remote role in a well-backed Climate-Tech team, you will be looking to join a positive impact business with an exceptional JavaScript/React/Next.js engineering team where … there’s potential for this position to evolve into a leadership role in customer success. About you: 5+ years in software development Experience building products end-to-end Full-stack engineer with Strong React/Next.js, experience with Tailwind and UI best practices would be highly beneficial Experience with cloud infrastructure (AWS/Azure …/GCP), DevOps and data/ML workflows Happy to liaise with clients If you can see yourself in a mission-led, impact-focused team, apply now! JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote More ❯

JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote JavaScript Full-Stack Engineer required for a fully remote role in a well-backed Climate-Tech team, you will be looking to join a positive impact business with an exceptional JavaScript/React/Next.js engineering team where … there’s potential for this position to evolve into a leadership role in customer success. About you: 5+ years in software development Experience building products end-to-end Full-stack engineer with Strong React/Next.js, experience with Tailwind and UI best practices would be highly beneficial Experience with cloud infrastructure (AWS/Azure …/GCP), DevOps and data/ML workflows Happy to liaise with clients If you can see yourself in a mission-led, impact-focused team, apply now! JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote More ❯

JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote JavaScript Full-Stack Engineer required for a fully remote role in a well-backed Climate-Tech team, you will be looking to join a positive impact business with an exceptional JavaScript/React/Next.js engineering team where … there’s potential for this position to evolve into a leadership role in customer success. About you: 5+ years in software development Experience building products end-to-end Full-stack engineer with Strong React/Next.js, experience with Tailwind and UI best practices would be highly beneficial Experience with cloud infrastructure (AWS/Azure …/GCP), DevOps and data/ML workflows Happy to liaise with clients If you can see yourself in a mission-led, impact-focused team, apply now! JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote More ❯

JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote JavaScript Full-Stack Engineer required for a fully remote role in a well-backed Climate-Tech team, you will be looking to join a positive impact business with an exceptional JavaScript/React/Next.js engineering team where … there’s potential for this position to evolve into a leadership role in customer success. About you: 5+ years in software development Experience building products end-to-end Full-stack engineer with Strong React/Next.js, experience with Tailwind and UI best practices would be highly beneficial Experience with cloud infrastructure (AWS/Azure …/GCP), DevOps and data/ML workflows Happy to liaise with clients If you can see yourself in a mission-led, impact-focused team, apply now! JavaScript Full-Stack Engineer - Climate-Tech Start-Up - Fully Remote More ❯

Full Stack Engineer/Developer (TypeScript Elixir AWS) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Full Stack Engineer role at a successful and profitable energy trading market data scale-up. What's in it for you: Competitive salary, to £100k + Significant Equity Hybrid working (3 days London office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work … Your role: As a Full Stack Engineer you will take ownership, working on technically challenging Greenfield development projects. You'll be working on complex problems with scalability and reliability in mind, across the full development lifecycle from architecture and design through to implementation. There's a range of technology in the stack More ❯

Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity Company: I'm looking for Full Stack Engineers who are excited about elegant systems as they are about real-world impact. Their mission is to reduce carbon emissions in the … Country-wide data tools through large-scale scraping + mapping -> Hardware integrations (e.g. bluetooth laser measures, sensors) -> Offline-first/PWA apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL/PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Requirements for Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity -> 2+ years commercial experience -> STEM Background -> React + TypeScript (you’re confident building fast, dynamic UIs) -> SQL and relational database design -> RESTful APIs and distributed systems -> Scalable and secure architectures -> Owning features end-to-end, from shaping the product idea to shipping the code. Type More ❯

Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity Company: I'm looking for Full Stack Engineers who are excited about elegant systems as they are about real-world impact. Their mission is to reduce carbon emissions in the … Country-wide data tools through large-scale scraping + mapping -> Hardware integrations (e.g. bluetooth laser measures, sensors) -> Offline-first/PWA apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL/PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Requirements for Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity -> 2+ years commercial experience -> STEM Background -> React + TypeScript (you’re confident building fast, dynamic UIs) -> SQL and relational database design -> RESTful APIs and distributed systems -> Scalable and secure architectures -> Owning features end-to-end, from shaping the product idea to shipping the code. Type More ❯

Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity Company: I'm looking for Full Stack Engineers who are excited about elegant systems as they are about real-world impact. Their mission is to reduce carbon emissions in the … Country-wide data tools through large-scale scraping + mapping -> Hardware integrations (e.g. bluetooth laser measures, sensors) -> Offline-first/PWA apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL/PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Requirements for Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity -> 2+ years commercial experience -> STEM Background -> React + TypeScript (you’re confident building fast, dynamic UIs) -> SQL and relational database design -> RESTful APIs and distributed systems -> Scalable and secure architectures -> Owning features end-to-end, from shaping the product idea to shipping the code. Type More ❯