1 to 25 of 127 Senior Full-Stack Engineer Jobs in the UK

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 … 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 junior … 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 of More ❯

Senior Full-Stack Engineer London AI Start-up Up to £120,000 + Shares + Private Healthcare + Pension Were working with a well-funded AI start-up in London thats gearing up for huge growth. Theyre expecting to scale 10x over the next 18 months. Theyre now looking for a Senior Full-Stack Engineer to help design and build the next generation of their AI-driven platform. Reporting directly into the CTO and collaborating closely with product and research teams, this is a unique chance to take ownership across the stack and make a lasting impact in a company at the … big plus. The role is full-time, 3/4 days a week in their London office. What theyre looking for Strong experience as a Full-Stack Engineer across React, Next.js, Node.js, and Python. Solid knowledge of SQL databases and data modelling. Hands-on experience with cloud platforms (AWS or GCP). 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 … They believe in building fast 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 solutions in product-driven companies 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 … They believe in building fast 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 solutions in product-driven companies More ❯

Senior Full Stack Engineer/Technical Lead - Series A/B FinTech Scale-Up This is a fantastic opportunity to join a fast-growing, well-funded fintech and be part of our journey as we continue to develop and scale our distributed financial risk platform. We have multiple roles open and this … would suit either a mid/senior-level engineer looking for a new challenge, or a senior engineer looking to move into a technical lead role. Location: London (Hybrid – 5-minute walk from London Bridge Station) About BondAval Founded in 2020, BondAval is a fast-growing fintech transforming B2B credit with innovative … Tallis Capital, Expa and Dawn Capital, alongside Angel Investors like Tom Blomfield (founder of Monzo) and Carlos Cadenas (Index Ventures, GoCardless, Skyscanner). The Role: Full Stack Engineer/Technical Lead We are looking for multiple (Mid-Senior-Lead) Full Stack/Back End Engineers to join our More ❯

Senior Fullstack Engineer (Python) | GenAI-Powered Fintech We are looking for a Senior Fullstack Engineer whose primary language is Python with a strong GenAI-led engineering approach to join this highly profitable, mid-sized fintech in London that’s experiencing continuous growth. The successful Snr Fullstack Engineer will join a … innovation. They offer a flexible hybrid working model and are deeply focused on leveraging AI to revolutionise their development process. We're looking for a solid, experienced full-stack practitioner who can make a substantial impact across the platform. Your Core Expertise: Python (Primary Language) 🐍 Solid full-stack development experience. Proven experience … iterate on code that is generated by AI agents. 'Good Looks Like': Insights into which available GenAI tools and workflows yield the best results for robust, maintainable full-stack engineering. What's on Offer 🎁 Highly Competitive Salary and a comprehensive benefits package. Hybrid Working model based in London. A genuinely great culture—collaborative, empowering, and focused More ❯

Senior Fullstack Engineer (Python) | GenAI-Powered Fintech We are looking for a Senior Fullstack Engineer whose primary language is Python with a strong GenAI-led engineering approach to join this highly profitable, mid-sized fintech in London that’s experiencing continuous growth. The successful Snr Fullstack Engineer will join a … innovation. They offer a flexible hybrid working model and are deeply focused on leveraging AI to revolutionise their development process. We're looking for a solid, experienced full-stack practitioner who can make a substantial impact across the platform. Your Core Expertise: Python (Primary Language) 🐍 Solid full-stack development experience. Proven experience … iterate on code that is generated by AI agents. 'Good Looks Like': Insights into which available GenAI tools and workflows yield the best results for robust, maintainable full-stack engineering. What's on Offer 🎁 Highly Competitive Salary and a comprehensive benefits package. Hybrid Working model based in London. A genuinely great culture—collaborative, empowering, and focused More ❯

Senior Software Engineer/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes … years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof … happy to mentor more junior developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Software Engineer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing More ❯

Senior Software Engineer/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes … years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof … happy to mentor more junior developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Software Engineer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing 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 … 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 … user needs into clean, reliable solutions Contributing to architectural discussions and mentoring across the engineering team What you’ll bring as a Senior Full Stack Engineer: Strong experience building production systems across the stack (React, Node, Typescript) Good understanding of system design, data modelling, and API architecture Experience with cloud 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 … 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 … user needs into clean, reliable solutions Contributing to architectural discussions and mentoring across the engineering team What you’ll bring as a Senior Full Stack Engineer: Strong experience building production systems across the stack (React, Node, Typescript) Good understanding of system design, data modelling, and API architecture Experience with cloud More ❯

Senior Fullstack Engineer (React/Python) Salary: Up to £80k Location: 1 day p/week in London Senior Fullstack Engineer (React/Python) - would you like the opportunity to work for a start-up who are helping organisations reduce their energy costs? They have raised over £2.5 million so far and … are pushing for Series A funding. As a Senior Fullstack Engineer, you will work with their product team to design, code and test their platform, while also working together with their customers and partners Key requirements: 4+ years’ experience working with JavaScript and React. Experience working with Python. Experience working with Django. AWS. Bonus if you … have worked in start-ups before. If you’re a Senior Fullstack Engineer (React, Python) looking for a new challenge, please apply. More ❯

Senior Fullstack Engineer (React/Python) Salary: Up to £80k Location: 1 day p/week in London Senior Fullstack Engineer (React/Python) - would you like the opportunity to work for a start-up who are helping organisations reduce their energy costs? They have raised over £2.5 million so far and … are pushing for Series A funding. As a Senior Fullstack Engineer, you will work with their product team to design, code and test their platform, while also working together with their customers and partners Key requirements: 4+ years’ experience working with JavaScript and React. Experience working with Python. Experience working with Django. AWS. Bonus if you … have worked in start-ups before. If you’re a Senior Fullstack Engineer (React, Python) looking for a new challenge, please apply. More ❯

Senior Software Engineer (TypeScript Full Stack) 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 Software Engineer … 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 Senior Software 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 … Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group/Oxbridge or top 100 global university You are an experienced software engineer with a strong knowledge of best practices and Computer Science fundamentals and experience of delivering complex, data centric software You have advanced analytical and problem solving skills You're More ❯

Senior Full-Stack AI Engineer Contract opportunity 6 month initial contract with likely extension £650 - £700 per day DOE Inside IR35 Oxford based Hybrid role … to 3 days onsite per week) *Please note this role requires Security Clearance Job description We are looking for a Senior Full Stack AI Engineer with strong hands-on experience in building advanced multi agent AI systems using frameworks such as LangGraph or similar. You will be responsible for designing, developing and More ❯

BRAND NEW - SENIOR FULL STACK ENGINEER *** Senior Full Stack Engineer Surrey based (x2-3 days - must be commutable to Surrey) Paying between £60-70k My client are looking for: - Proven Full Stack Development Experience - Hands on experience with: React More ❯

Senior Full Stack Engineer | Node.js & SQL | Data‐Heavy FinTech Platform You’ll join a 50‐person, London/US SaaS scale‐up serving top‐tier investment firms with a market‐leading, data analytics platform for global credit investors (think Reuters and Bloomberg) The engineering org is London‐based (circa 13–14 people … cycle to work; choice of quality hardware A great role here and the chance to work with an awesome team. Apply ASAP! Senior Full Stack Engineer | Node.js & SQL | Data‐Heavy FinTech Platform More ❯

Senior Full Stack Engineer | Node.js & SQL | Data‐Heavy FinTech Platform You’ll join a 50‐person, London/US SaaS scale‐up serving top‐tier investment firms with a market‐leading, data analytics platform for global credit investors (think Reuters and Bloomberg) The engineering org is London‐based (circa 13–14 people … cycle to work; choice of quality hardware A great role here and the chance to work with an awesome team. Apply ASAP! Senior Full Stack Engineer | Node.js & SQL | Data‐Heavy FinTech Platform More ❯

About the Job Senior Fullstack Engineer (React/.Net) – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is … building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and dynamic dashboards for high-velocity business & artificial intelligence. About the Role As a Senior Full-stack Engineer , you’ll play a key role in architecting and developing scalable, high-performance web applications that bring complex data to life. Working across both … This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through clean, intelligent design — let’s connect More ❯

About the Job Senior Fullstack Engineer (React/.Net) – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is … building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and dynamic dashboards for high-velocity business & artificial intelligence. About the Role As a Senior Full-stack Engineer , you’ll play a key role in architecting and developing scalable, high-performance web applications that bring complex data to life. Working across both … This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through clean, intelligent design — let’s connect More ❯

About the Job Senior Fullstack Engineer (React/.Net) – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is … building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and dynamic dashboards for high-velocity business & artificial intelligence. About the Role As a Senior Full-stack Engineer , you’ll play a key role in architecting and developing scalable, high-performance web applications that bring complex data to life. Working across both … This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through clean, intelligent design — let’s connect More ❯

About the Job Senior Fullstack Engineer (React/.Net) – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is … building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and dynamic dashboards for high-velocity business & artificial intelligence. About the Role As a Senior Full-stack Engineer , you’ll play a key role in architecting and developing scalable, high-performance web applications that bring complex data to life. Working across both … This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through clean, intelligent design — let’s connect More ❯

About the Job Senior Fullstack Engineer (React/.Net) – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is … building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and dynamic dashboards for high-velocity business & artificial intelligence. About the Role As a Senior Full-stack Engineer , you’ll play a key role in architecting and developing scalable, high-performance web applications that bring complex data to life. Working across both … This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through clean, intelligent design — let’s connect More ❯

Senior Full Stack Engineer Location: Manchester Science Park (Hybrid) Company: UrbanChain Job Type: Full-time | Hybrid | CleanTech About UrbanChain UrbanChain is transforming how people buy and sell energy. We’re a fast-growing clean-tech company enabling peer-to-peer trading between renewable energy producers and consumers. By combining advanced … fair, and sustainable. Thousands of homes and businesses already use our platform — now we’re scaling, and we’re looking for a Senior Full Stack Engineer to help lead the next phase of growth. The Role We’re looking for an experienced Full Stack Engineer to More ❯

Senior Full Stack Engineer | Cybersecurity Scale-Up | Fully Remote (Global) Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator , recognised by Gartner and trusted by Fortune 500s and critical infrastructure … cutting-edge technology that helps organisations continuously understand how they could be compromised and theyre scaling fast. Now, theyre looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where youll help shape the customer experience for some of the worlds largest enterprises. What youll be doing More ❯