126 to 150 of 155 Senior Full Stack Developer Jobs

Senior Software Engineer Hayes, London Hybrid We are looking for a Senior Web Application Developer with 5+ years of experience in building and maintaining scalable, high-quality applications to join our growing tech team. As a senior member, you’ll play … professional experience building web applications using Ruby, Rails, React, and TypeScript. Strong backend development skills with a willingness to contribute across the full stack Proactive and self-driven, able to take ownership of tasks from conception to deployment. Excellent communication skills, capable of translating complex technical ...

Angular Developer £400 inside ir35 Remote - Adhoc into Newcastle Start ASAP 3/6 Month contract Experience • A full stack engineer and a front-end engineer to support with our angular migration. • CI/CD, node.js, express, jest testing, and angular over any other … frontend framework.• Aligning to the recent Senior Node.js campaign that was run, with a focus on Angular over React.• Kubernetes experience is desirable • SC eligible nice to have, not mandatory. ...

split is roughly 70–80% front end, 20–30% back end (Node, React‐router, SvelteKit) — enough to remove performance bottlenecks without being a full‐stack role. Who you’ll work with You’ll report directly to the technical leadership and work most closely with the Product … Svelte, Web Components or other framework experimentation. Experience with auth flows (OAuth2, OpenID Connect) and secure front‐end patterns. Prior work on B2B developer tools or dashboards at the seed‐to‐Series‐B stage. What’s on offer £80,000–£100,000 base + annual company performance bonus. ...

Senior Software Engineer Are you a developer who loves building products, not just features? Do you thrive at the intersection of robust backend logic, intuitive frontend interfaces, and conversational AI? Are you excited to join a fast-growing, seed-funded startup transforming construction procurement … small, ambitious team of 10 that moves fast, trusts each other, and enjoys building genuinely impactful technology. Your Role As a Senior Software Engineer you won’t just be ticket-crunching. You will own the end-to-end experience of our platform. You’ll be responsible for architecting ...

Senior Software Engineer (Systems & Automation) London, Hybrid, Permanent We are partnering with a high-growth technology firm in London to find a Senior Software Engineer who excels at the intersection of product engineering and operational efficiency. This is a role for an engineer who is naturally … application codebase while taking primary ownership of the workflows, tooling, and pipelines that support it. Workflow Optimization: Identify and resolve friction in the developer experience, from reducing build times to refining CI/CD feedback loops. Internal Tooling: Design and build bespoke automation, operational dashboards, and scripts that ...

Python Developer | Python & FastAPI | Founding Engineer in AI Venture Studio Building Creator-Led Products Salary: 90k + Generous Equity Location: On-Site, London The Role You’ll join an early-stage AI venture studio as a Founding Engineer, working directly with the CTO inside a small, elite team … exposure that would normally take years to accumulate elsewhere. This is a role for engineers who want to build, ship, and learn at full speed and who care deeply about turning ideas into real products people actually use. What They’re Looking For You will have ...

Senior/Lead .NET Software Developer who is keen to work for a Certified B Corp? Are you keen to use your Full Stack Development skills to create bespoke lending solutions that help UK homeowners build long-term financial wellbeing … looking for a Lead Software Engineer to help shape the future of our technology platform click apply for full job details ...

year’s experience in software development who wants to deepen their knowledge of modern .NET, learn from experienced engineers, and get exposure to full-stack projects. What you’ll be doing Build and maintain web applications using C# and .NET Core Write clean, efficient, and testable … code Support integration with SQL databases Collaborate with senior engineers and contribute to team discussions Learn and contribute across the stack, including exposure to React and front-end development Tech stack C#, .NET Core SQL Server React (or similar modern JavaScript framework) Azure DevOps ...

Role We are looking for a Senior/Lead Software Developer to join the Front Office Applications team at one of our major Commodity Trading clients. You will be supporting oil traders and analysts with tools that drive strategy and decision-making. This includes migrating users ...

Fullstack Engineer at Zelt you will help build features end to end, from implementation to testing and launch. You will work closely with senior engineers who will guide architecture decisions while you focus on delivering high-quality code and learning how to scale a SaaS product. This … your work helps shape a platform used every day by modern companies. What you will do: Implement and maintain features across the stack using React, TypeScript, Node.js, NestJS, PostgreSQL and AWS Collaborate closely with senior engineers, product and design to deliver well-scoped features from start ...

Senior Data Scientist/Product Analyst II - Engineering Platform Location: London, UK (Hybrid) The Mission Behind every global streaming giant is a massive engine of internal tools and infrastructure. We are looking for a data expert to join our Platform Insights team. Your "customers" aren … listeners-they are the hundreds of world-class engineers building the applications used by millions. Your goal is to optimize the developer experience, ensuring our internal systems are fast, stable, and scalable. What You'll Do Drive Product Strategy: Partner with Product Managers and Engineers to define what ...

London | 🕐 Full-time | ⚡ Early-stage startup | 🛠 Product & Engineering ABOUT THE COMPANY Modern democracies struggle not because people don't care, but because citizen voices are atomised and hard to make sense of. One representative speaks for hundreds of thousands - yet most citizens are powerless, cut off from essential … built with available technologies. The right person can write a product specification in the morning, pair with a developer in the afternoon, and ship a prototype by the end of week. You'll own the product surface end-to-end — from strategy and roadmap through to UX decisions ...

Basic, bonus scheme + benefits Industry: Fintech/Digital Banking What You’ll Be Doing Leading the design and delivery of full stack features across backend and frontend systems within a cross-functional squad Building and maintaining Kotlin/Java Spring Boot microservices deployed as containerised … reliability by driving observability, SLOs, incident response practices, and operational excellence Enhancing CI/CD pipelines, testing strategies, and deployment workflows to improve developer experience Collaborating closely with Product and Design to shape solutions and ensure technical feasibility Ensuring secure, compliant, and performant systems aligned with regulatory expectations ...

engineering delivery across client engagements. Oversee end-to-end implementation of AI/ML solutions, from concept through to production. Act as the senior engineering authority, ensuring high-quality outputs across wider teams. Establish best-practice engineering ecosystems, including CI/CD pipelines, automation, developer tooling … acting as the 'first engineer on the ground' to drive direction and standards. Hands-on proficiency with cloud platforms and modern engineering patterns. Full-stack technical capability across front-end and back-end technologies (e.g., React, Vue, Flutter, C#, Java, Python, Node, Go). Broad exposure ...

complex, data-heavy products (e.g. dashboards, analytics tools, dev tools, B2B SaaS) Experience owning significant product areas or systems end-to-end Solid full stack understanding (APIs, data flows, system design) Comfortable working in ambiguous, fast-moving environments where you build from scratch Ideal profile 7+ … years experience (or equivalent impact), ideally working on an AI native product Previously operated at Senior/Staff level scope Product-minded: cares deeply about UX, performance, and usability Enjoys simplifying complex workflows for technical users Pragmatic builder. You know when to ship vs. over-engineer Nice ...

investment-focused organisation delivering a major transformation programme, replacing a legacy platform with a modern, cloud-based ecosystem. They’re looking for a senior Software Development Manager to lead a key workstream focused on data migration and application modernisation. This is a player/coach role combining hands … with teams in the US, so some flexibility in working hours is required. Key responsibilities Lead and manage a cross-functional engineering team (full stack, data and junior engineers) Champion the adoption of AI tools and practices, including automation, developer productivity and AI-driven ...

Senior Back-End Developer Location: Edinburgh (Remote-first, with occasional office visits) Salary: £50,000 – £60,000 per year + competitive benefits About the Role We’re seeking a Senior Back-End Developer to help build and scale a cutting-edge resource … Optimize for scalability, performance, and maintainability across the codebase. Mentor and coach other developers in best practices and technical approaches. Participate in the full feature lifecycle—from concept to deployment and ongoing enhancements. Work in an agile environment on a large-scale software product. About You Strong experience ...

have an opportunity for a Senior Front-End Developer to join a rapidly scaling, digital platform. After doubling their user base in the last year, the company is looking for a technical specialist to take full ownership of the front-end experience. You will … joining a reinforced engineering team to bridge the gap between high-end UI design and technical implementation. This is a role for a developer who is meticulous about the little details, page load times, modular architecture, and creating a seamless, user experience. Greater London/South East ...

Senior Front-End Developer Location: Edinburgh (Remote-first, with occasional office visits) Salary: £50,000 – £60,000 per year + competitive benefits About the Role We’re looking for a Senior Front-End Developer to join our engineering team and help build … high-quality, maintainable, and performant code through best practices and automated testing. Mentor and support other developers within the team. Participate in the full feature lifecycle—from ideation to deployment and ongoing improvements. Work in an agile environment on a large-scale software product. About You Strong experience ...

partnering with one of London’s most selective and highest-performing quantitative investment funds to appoint a Senior Quant Software Developer to their core systematic trading group. This is a confidential mandate for a team renowned for world-class engineering standards, scientific rigour, and a culture … high-performance software development — with code that moves rapidly from prototype to production and directly influences trading performance. The Role As a Quant Developer, you will: Collaborate closely with quant researchers to productionise models and design scalable research/tooling infrastructure Develop high-performance, robust code across Python ...

images. This will feed into a better understanding of disease processes and ultimately better treatments for patients. The back end of their technology stack comprises Java-based microservices running on AWS. Data security and integrity is of paramount importance, and the solution needs to be compliant with healthcare … industry software standards - we are therefore keen to hear from applicants with relevant experience in healthcare technology. Success in this senior role calls for excellent software development skills in Java (or a closely related OO language), and a strong understanding of AWS is essential. You will also need ...

Position Title: Software Developer - Hartford, CT Location: Hartford, CT, USA Req. ID: 228 Join our Team and Make a Difference! At Lifeway Mobility, we believe that everyone deserves to live comfortably, independently, and safely in their own homes. As a leading nationwide provider of accessibility solutions … thrive and make a difference.Developer - Mid-Level to SeniorLocation: Connecticut (On-site, Hybrid, or Remote)About the RoleWe're looking for a software developer to join our small, focused team building the custom systems that differentiate our company. You'll work across the full development stack ...

looking for a Principal Robotics/C++ Software Engineer to lead that transition. The Role This role goes beyond a typical senior engineering position. You’ll be responsible for shaping the long‐term technical direction of the entire software stack, while staying close enough … systems move from working solution to scalable, production platform. What You’ll Be Doing Driving the technical vision and architecture of the full software stack Making key design decisions as the system scales from deployed solution to production platform Contributing hands‐on where needed, particularly ...

seeking a Head of Infrastructure to own the reliability, scalability, security, and cost-effectiveness of the Xelix SaaS platform. This role provides senior technical and operational leadership to ensure our technology and processes are capable of meeting our future business needs. This is a hands‐on leadership role … proposal and see the change through. Taking responsibility, showing pride in your work and excellent communication skills are essential. The current technology stack makes extensive use of Amazon Web Services using Terraform to configure services. We also use Jenkins, Sentry, GitHub, Shortcut, Python and React and an evolving ...

variety of different challenges across the product and codebase. About you You will be a strong back‐end C# or front‐end JS developer, but with some good experience across both front end and back end technologies. Our tech stack is based around .NET (framework … Core) and Vue.js, so a willingness to work across the tech stack is a must. Have experience of using automated testing to prove that everything you do is of a high degree of quality. You will be passionate about creating a product you can be proud of. Working ...