19 of 19 Permanent Senior Full-Stack Engineer Jobs in London

R ole: Senior Software Engineer - Full-Stack Location: London Working Model: Hybrid 3 Days Salary: – Up to £128,000 Ready to build tech that actually means something? This team is powering the next generation of electrification — EVs, solar, batteries, heat pumps, smart devices — all connected through a platform that’s scaling fast … and rewriting the rulebook in green-energy tech. They’re growing. They’re hiring. And they want a Senior Engineer who can own problems end-to-end, think like a product person, and ship like someone who knows their craft inside out. If you want a job where you just “pick up tickets”, this isn’t … Product Engineer. Therefore, if you want ownership, modern tech, and work that actually matters? This one’s worth a serious look. Why This Role Rocks You work full-stack: TypeScript, Node, React, React Native (bonus). You ship features end-to-end — design → build → deploy → monitor. You join a proper engineering culture: smart people, no ego More ❯

R ole: Senior Software Engineer - Full-Stack Location: London Working Model: Hybrid 3 Days Salary: Up to £128,000 Ready to build tech that actually means something? This team is powering the next generation of electrification EVs, solar, batteries, heat pumps, smart devices all connected through a platform thats scaling fast and … rewriting the rulebook in green-energy tech. Theyre growing. Theyre hiring. And they want a Senior Engineer who can own problems end-to-end, think like a product person, and ship like someone who knows their craft inside out. If you want a job where you just pick up tickets, this isnt it. Im looking for … fledged Product Engineer. Therefore, if you want ownership, modern tech, and work that actually matters? This ones worth a serious look. Why This Role Rocks You work full-stack: TypeScript, Node, React, React Native (bonus). You ship features end-to-end design ? build ? deploy ? monitor. You join a proper engineering culture: smart people, no ego More ❯

Senior Full Stack Engineer We are seeking a talented Senior Full Stack Software Engineer to join a leading global investment management firm in London. Paying up to 120k plus bonus per annum, you will contribute to the development, optimisation, and design of front-office … applications, collaborating with portfolio managers and product owners to create innovative and high-performance solutions. As a Senior Full Stack Software Engineer, you will play a key role in developing and delivering critical investment management tools and systems. Your expertise will be essential in ensuring the optimal performance of the firm's More ❯

Senior Full Stack Engineer We are seeking a talented Senior Full Stack Software Engineer to join a leading global investment management firm in London. Paying up to 120k plus bonus per annum, you will contribute to the development, optimisation, and design of front-office … applications, collaborating with portfolio managers and product owners to create innovative and high-performance solutions. As a Senior Full Stack Software Engineer, you will play a key role in developing and delivering critical investment management tools and systems. Your expertise will be essential in ensuring the optimal performance of the firm's More ❯

Senior Full Stack Engineer Are you a pragmatic, innovative, and self-motivated problem solver with a passion for building scalable, high-performing software? We're looking for a Senior Full Stack Engineer to join a high-performing product team working on a global, high … performance to ensure fast, seamless user experiences Contribute to continuous improvement efforts, introducing new ideas and technologies What You'll Bring Proven experience as a Full Stack Engineer or similar role Expertise in React, JavaScript/TypeScript, HTML, CSS , and responsive design principles Strong understanding of Back End technologies and best practices Passion for More ❯

Senior Full Stack Engineer Are you a pragmatic, innovative, and self-motivated problem solver with a passion for building scalable, high-performing software? We're looking for a Senior Full Stack Engineer to join a high-performing product team working on a global, high … performance to ensure fast, seamless user experiences Contribute to continuous improvement efforts, introducing new ideas and technologies What You'll Bring Proven experience as a Full Stack Engineer or similar role Expertise in React, JavaScript/TypeScript, HTML, CSS , and responsive design principles Strong understanding of Back End technologies and best practices Passion for More ❯

Job Title: Senior Software Engineer Location: London (Hybrid: 2-3 days/week in office) Contract Type: Permanent Salary: up to £100,000(DOE) About the Role We're looking for a skilled and experienced Senior Software Engineer to join a fast-paced, product-focused team building innovative technology that delivers real … the stack, with opportunities to specialise or broaden your scope Essential Experience Proven ability to define and deliver long-term technical direction in ambiguous environments Full-stack development experience, with ownership of technical decisions and outcomes Experience designing and deploying scalable, observable, and maintainable systems Familiarity with microservices architecture (synchronous and asynchronous) Strong experience More ❯

Job Title: Senior Software Engineer Location: London (Hybrid: 2-3 days/week in office) Contract Type: Permanent Salary: up to £100,000(DOE) About the Role We're looking for a skilled and experienced Senior Software Engineer to join a fast-paced, product-focused team building innovative technology that delivers real … the stack, with opportunities to specialise or broaden your scope Essential Experience Proven ability to define and deliver long-term technical direction in ambiguous environments Full-stack development experience, with ownership of technical decisions and outcomes Experience designing and deploying scalable, observable, and maintainable systems Familiarity with microservices architecture (synchronous and asynchronous) Strong experience More ❯

Role: Senior Full-Stack Engineer Industry: B2B SaaS Company Size: Under 150 Funding: Series A Salary: £90,000 - £110,000 basic Bonus: £10,000 Wedo has partnered with a B2B SaaS bases Series A start-up who’s built an AI KYC product which is impacting millions of people on a global … scale. We’re looking for a Senior Full Stack Developer which is front end leaning and an expert in React. We need engineers who can do more than write clean code. We’re looking for people who think, communicate, collaborate, and grow themselves and others around them. We need Engineers who can push product … Then Technology) Stage 1 – Behavioural Interview Deep dive into ownership, communication, conflict, self-awareness. Stage 2 – Technical: Front-End Leaning (45 mins, Zoom) With Lead FE + Staff Engineer Focus: React, TypeScript, product-thinking. Final Stage – CTO Conversation Alignment, motivation, scaling behaviours, team contribution. Package £100–£110k 10% cash bonus £1,000 wellness & development allowance Trust-based unlimited More ❯

R ole: Senior Software Engineer - Full-Stack Location: London Working Model: Hybrid 3 Days Salary: Up to £128,000 Ready to build tech that actually means something? This team is powering the next generation of electrification EVs, solar, batteries, heat pumps, smart devices all connected through a platform thats scaling fast and More ❯

Full Stack) - OAuth2, AWS IAM, React, Node.js, C# Join a global B2B SaaS leader as a Senior Full Stack IAM Engineer, driving secure, scalable identity and access management across multiple products. This permanent role offers the chance to shape authentication … and authorization services in a cutting-edge, AI-driven environment. About the Role: Own the IAM platform, designing and operating OIDC-compliant IDPs (Auth0, Okta, Cognito) Build full-stack features in TypeScript, Node.js, React, and C#/.NET Deliver secure login, SSO, MFA, RBAC/ABAC, and tenant isolation at scale, leveraging AWS services (Lambda, IAM … Collaborate across Product, Security, and Engineering teams, embed identity into new features, and uphold engineering excellence through CI/CD, testing, and incident response Required experience: Strong full-stack skills (TypeScript/Node.js, React, C#/.NET) Proven experience with OIDC-compliant IDPs (Auth0, Okta, Cognito) Deep knowledge of auth standards (OAuth2, OIDC, SAML, JWTs) Solid More ❯

their operations and make strategic, data-driven decisions. This is a unique opportunity to shape both the technical foundation and crew culture from the ground up. As a Senior Engineer, your mission is to: Drive Product Excellence : Develop features and solutions that directly align with our strategic business goals and deliver real value to our customers. … or CSS-in-JS solutions. Backend Proficiency : Solid experience with server-side technologies such as Scala, Java, , or Python, and expertise in building and consuming RESTful APIs. Full-Stack Integration : Experience bridging frontend and backend systems, including API design, data flow optimisation, and end-to-end feature development. Strong foundation in unit testing, clean code practices More ❯

our customer base and collection of spaces span across the world. Job Description We are looking for a Senior Front-End Engineer (or Full-Stack with strong frontend skills) whose primary responsibility is to further build our web app and mobile apps. This role is key to delivering ONDA''s product to More ❯

Senior Full Stack Engineer/Developer (TypeScript Elixir AWS) London/Hybrid Up to £100k + Equity Join a fast-growing energy trading data scale-up as a Senior Full Stack Engineer, working on complex greenfield systems that demand scalability, reliability and clean architecture. More ❯

Methods Analytics (MA) is recruiting for a Mid/Senior Software Engineer (Full Stack) to join our team a permanent basis. This role will be mainly remote but require flexibility to travel to client sites, and our offices based in London, Sheffield, and Bristol. Salary: £40k to £80k What You'll Be … Doing as a Software Engineer: Lead technical aspects of full stack development projects and mentor junior engineers Design and build scalable web applications using modern frontend and backend technologies Develop responsive user interfaces and robust REST APIs Design and maintain database schemas, queries, and optimise performance Implement comprehensive testing strategies and CI/CD More ❯

Qualifications Bachelor's or Master's degree in Computer Science or similar (PhDs will be given preference) 7+ years of experience in full-stack development; from UI to backend systems Full proficiency in Angular.JS and/or Angular 2+ (Angular 17) Full proficiency in Node.JS and JavaScript ES6+; Experience with NestJS is … all areas, including information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile. As a software engineer, you will work on a specific project critical to the Scopeworker platform with opportunities to switch teams and projects as you and … our fast-paced business grow and evolve. We need our engineers to be versatile, display leadership qualities and be enthusiastic to take on new problems across the full-stack as we continue to push technology forward. With your technical expertise you will manage project priorities, deadlines, and deliverables. You will design, develop, test, deploy, maintain, and More ❯

An exciting opportunity for an experienced Full-Stack Engineer to help transform a major Fixed Income front-office technology landscape. You'll architect and deliver high-performance, real-time React applications that support trading workflows, working closely with stakeholders to shape a scalable, future-ready platform. Key … Responsibilities: Design and develop modern, real-time React/Java applications for trading workflows Work closely with engineers to build robust, scalable, and low-latency systems Lead full-stack solution design, with a focus on backend performance, reliability, and system integration Translate business and technical requirements into cohesive system architectures Promote engineering excellence, modern development practices … in backend development, ideally with Java, REST APIs, and messaging frameworks Deep understanding of architecture and system design, including distributed and low-latency systems Ability to drive full-stack solutions, with a strong backend focus and solid UI fundamentals Demonstrated experience within a Rates or broader Fixed Income trading environment Strong appreciation for system-level design More ❯

and help fashion partners find better audiences as the category-leading destination for every fashion shopper. The Opportunity We are seeking a Senior Full Stack Engineer to join the Member Experience squad. This is a highly collaborative, cross-functional team focused entirely on elevating the journey for our registered Lyst members. You … work will span across the entire membership ecosystem, including the primary website, mobile application, CRM database, and our push-notification/email services. Our collective goal is to engineer seamless, engaging experiences that maximize member retention and value. Requirements Core Responsibilities Lead the development and maintenance of features (both client-side and server-side) critical to our e More ❯

Full Stack Product Engineer – SaaS Startup 🚨 We’re excited to partner with a profitable SaaS startup experiencing rapid growth and strong ARR in a short timeframe. Due to increasing customer demand, they’re expanding their engineering team and looking for product-minded engineers to join them on their journey. 💼 Role Details Title: Senior Product Engineer Location: Hybrid – 3 days/week in Central London office Salary: Up to £120k + Equity Tech Stack: Go, TypeScript, React (open to other strong technical backgrounds) ✅ What They’re Looking For Engineers who think like product owners Prior startup success or fast-paced environment experience A background in top-tier education … growth, product-led team Build features that directly impact customer success Work with a smart, driven team and cutting-edge tech 🚨 Full Stack Product Engineer – SaaS Startup More ❯