35 full stack developer jobs found

Full Stack Developer Engineer - Cyber DevOps Rate: £450 - £500 per day IR35: Outside IR35 Location: Fully Remote Start: ASAP We're looking for an experienced Full Stack Developer Engineer to join a Cyber DevOps team, developing internal applications, automation, tooling and new solutions used across cyber and network environments. This is a hands-on role covering the full software development lifecycle, with a particular focus on Python/FastAPI backend development alongside JavaScript/React frontend development. Key Responsibilities Design, develop and maintain full-stack applications and internal engineering tools Build backend services, APIs and automation using Python and FastAPI Develop frontend applications using JavaScript and React Work with SQL and PostgreSQL databases Develop, deploy and support applications within AWS Build and maintain CI/CD pipelines Troubleshoot application, infrastructure and integration issues Apply secure...

Full Stack Developer Engineer - Cyber DevOps Rate: £450 - £500 per day IR35: Outside IR35 Location: Fully Remote Start: ASAP We're looking for an experienced Full Stack Developer Engineer to join a Cyber DevOps team, developing internal applications, automation, tooling and new solutions used across cyber and network environments click apply for full job details

We're recruiting an experienced Full Stack Developer to help build a greenfield trading platform for a financial services business. This is a full-stack role with a strong Front End/UI emphasis. You'll lead on responsive, Real Time trading interfaces using Next.js and React, while also contributing to Back End services, APIs and integrations. This role is outside IR35 and requires 3 days per week onsite in London. Key requirements: Strong trading application UI experience using Next.js, React, TypeScript, Web Components and AG Grid. Real Time communication using WebSocket or SignalR. Backend development with C#, .NET 8, Python, RESTful APIs and Web API. Distributed systems and microservices, with RabbitMQ or Kafka messaging. Experience with Redis caching and Protobuf. SQL Server, AWS RDS and MongoDB or similar NoSQL databases. Azure/AWS, including application authentication. Azure DevOps, Git/GitHub, CI/CD pipelines and...

Senior Full Stack Engineer (Python & Typescript) Location: Predominantly Remote Start Date: November 2026 Duration: Until March/April 2027 Rate: £500 – £525 per day IR35: Outside IR35 The Opportunity We are supporting a client operating within a highly regulated environment and looking to engage an experienced contract engineer to join a critical delivery programme This is an opportunity to join a fast-paced engineering team focused on delivering high-quality software solutions where hands-on development, AI-assisted engineering, and structured delivery practices are central to success. What We're Looking For Successful candidates will have experience working within heavily regulated or enterprise environments and be comfortable operating within formal governance frameworks, change controls, ticketing processes, and established development lifecycles. You'll bring: Proven experience delivering software solutions in regulated environments Strong...

Senior Full Stack Engineer (Python & Typescript) Location: Predominantly Remote Start Date: November 2026 Duration: Until March/April 2027 Rate: £500 - £525 per day IR35: Outside IR35 The Opportunity We are supporting a client operating within a highly regulated environment and looking to engage an experienced contract engineer to join a critical delivery programme This is an opportunity to join a fast-paced engineering team focused on delivering high-quality software solutions where hands-on development, AI-assisted engineering, and structured delivery practices are central to success. What We're Looking For Successful candidates will have experience working within heavily regulated or enterprise environments and be comfortable operating within formal governance frameworks, change controls, ticketing processes, and established development life cycles. You'll bring: Proven experience delivering software solutions in regulated environments Strong...

Senior Full Stack Engineer (Python & Typescript) Location: Predominantly Remote Start Date: November 2026 Duration: Until March/April 2027 Rate: £500 - £525 per day IR35: Outside IR35 The Opportunity We are supporting a client operating within a highly regulated environment and looking to engage an experienced contract engineer to join a critical delivery programme This is an opportunity to join a fa click apply for full job details

Full-Stack Developers – React, React Native & .NET | Maritime Defence Security clearance — Current UK SC clearance preferred. Applicants eligible to obtain SC may be considered, subject to confirmation. Active SC is required for site attendance. About the opportunity Puma Berry is seeking two Full-Stack Developers, one mid-level and one senior , for an upcoming maritime defence software programme. You will help develop applications that enable users to record vessel inspections, capture survey data and synchronise information across connected and offline environments. Working within an established Agile team, you will contribute across web, mobile and backend development alongside business analysts, designers, developers and testers. These opportunities are subject to contract award. Contract details Rate — £425–£525 per day, depending on experience and role level. IR35 status — Expected to be outside IR35, subject to...

AWS Full-Stack Developer - Serverless & Cloud Modernisation Remote IR35: Outside IR35 Start: Immediate/within 1-2 weeks The Opportunity We are seeking two experienced AWS Full-Stack Developers to support a major cloud modernisation programme for a UK public-sector organisation. You will be responsible for migrating a business-critical Legacy application from an on-premise Ingres database and OpenROAD environment to a modern, private serverless AWS architecture. This is a hands-on opportunity to work with modern AWS technologies and AI-assisted development tools, helping establish a repeatable migration approach for approximately 30 further Legacy systems. The team is hiring across two areas: application development and cloud infrastructure/data migration. Both developers will work across the full stack. Key Responsibilities Build serverless applications using AWS Lambda, API Gateway, S3, EventBridge and SQS. Reverse-engineer Legacy code and migrate business logic...

Full Stack Developer Engineer - Cyber DevOps Rate: £450 (Outside IR35) Location: Remote Contract: 3-6 months Python | FastAPI | JavaScript | React | AWS We're looking for an experienced Full Stack Developer to join a growing Cyber DevOps team, developing innovative applications, automation and engineering tools used across Cyber Security and Network environments. This is an opportunity to work on a varied range of development projects, taking ownership across the full software development lifecycle, from designing and building backend services and APIs through to frontend development, cloud deployment and production support. You'll be working with modern technologies to build secure, scalable and reliable solutions that support critical engineering environments. What will you be doing? Designing, developing and maintaining full-stack applications and internal engineering tools. Building backend services, REST APIs and automation solutions using Python and FastAPI....

Full Stack Developer Engineer - Cyber DevOps Rate: £450 - £500 per day IR35: Outside IR35 Location: Fully Remote Start: ASAP We're looking for an experienced Full Stack Developer Engineer to join a Cyber DevOps team, developing internal applications, automation, tooling and new solutions used across cyber and network environments. This is a hands-on role covering the full software development lifecycle, with a particular focus on Python/FastAPI backend development alongside JavaScript/React frontend development. Key Responsibilities Design, develop and maintain full-stack applications and internal engineering tools Build backend services, APIs and automation using Python and FastAPI Develop frontend applications using JavaScript and React Work with SQL and PostgreSQL databases Develop, deploy and support applications within AWS Build and maintain CI/CD pipelines Troubleshoot application, infrastructure and integration issues Apply secure...

Full Stack Developer Engineer - Cyber DevOps Rate: £450 (Outside IR35) Location: Remote Contract: 3-6 months Python FastAPI JavaScript React AWS We're looking for an experienced Full Stack Developer to join a growing Cyber DevOps team, developing innovative applications, automation and engineering tools used across Cyber Security and Network environments. This is an opportunity to work on a varied range of development projects, taking ownership across the full software development lifecycle, from designing and building backend services and APIs through to frontend development, cloud deployment and production support. You'll be working with modern technologies to build secure, scalable and reliable solutions that support critical engineering environments. What will you be doing? Designing, developing and maintaining full-stack applications and internal engineering tools. Building backend services, REST APIs and automation solutions using Python and FastAPI....

Full Stack Developer Engineer - Cyber DevOps Rate: £450 (Outside IR35) Location: Remote Contract: 3-6 months Python FastAPI JavaScript React AWS We're looking for an experienced Full Stack Developer to join a growing Cyber DevOps team, developing innovative applications, automation and engineering tools used across Cyber Security and Network environments click apply for full job details

Full Stack Developer (Python/React/AWS) Contract: Outside IR35 Location: Hybrid Working (UK) Day Rate: Competitive Duration: Initial contract with extension potential We're seeking an experienced Full Stack Developer to join a high-performing technology team, delivering applications, automation solutions, and engineering tools that support complex operational environments. This is a hands-on role where you'll work across the full software development lifecycle, designing, building, and supporting scalable applications using modern technologies across both cloud and on-premise environments. Key Responsibilities Design, develop, and maintain full-stack applications and internal tooling. Build Back End services, APIs, and automation solutions using Python and FastAPI. Develop modern web applications using JavaScript and React. Design and optimise PostgreSQL databases. Deploy and support applications within AWS environments. Build and maintain CI/CD...

Full-Stack Developers – React, React Native & .NET | Maritime Defence Security clearance — Current UK SC clearance preferred. Applicants eligible to obtain SC may be considered, subject to confirmation. Active SC is required for site attendance. About the opportunity Puma Berry is seeking two Full-Stack Developers, one mid-level and one senior , for an upcoming maritime defence software programme. You will help develop applications that enable users to record vessel inspections, capture survey data and synchronise information across connected and offline environments. Working within an established Agile team, you will contribute across web, mobile and backend development alongside business analysts, designers, developers and testers. These opportunities are subject to contract award. Contract details Rate — £425–£525 per day, depending on experience and role level. IR35 status — Expected to be outside IR35, subject to...

Full Stack Software Developer Active SC TypeScript/React/Node.js Overview Outside IR35 £500-£540 a day Remote + adhoc onsite in South coast location Start ASAP 6 Month Contract Active SC - essential SR2 is recruiting an experienced Full Stack Developer to join an exciting greenfield project within a highly regulated area. This is a fantastic opportunity to build a brand-new TypeScript codebase from the ground up, working across both Front End and Back End development. You'll have plenty of autonomy, working closely with the Technical Lead to shape technical decisions, engineering standards and the overall solution. Due to the secure nature of this work applicants must already have active SC clearance. Unfortunately, due to the quick turn around required, we cannot put you through this if you do not already have it. Key Skills & Experience: Front End: TypeScript, React, modern CSS, accessibility Back End: TypeScript, Node.js, REST APIs,...

Full Stack Engineer | Cross Asset Trading | React, C#, .NET, SQL Server | London | Hybrid 1-2 days onsite | Up to £550 p/day | Outside IR35 We’re working with a cross-asset trading business that’s firmly tech-first, where engineering sits at the heart of how the firm operates. They’re looking for a Full Stack Developer to join on a contract basis and help build the applications their traders and teams rely on every day. On the technical side, this is a front end-led role, with roughly 60% of your time in React, 30% across .NET, C# and API development, and the remaining 10% in SQL Server. Experience with the modern React ecosystem will set you apart, particularly the TanStack suite, which has become the industry standard for data access and routing. Just as important, you’ll bring a background in regulated environments. Finance can be a tricky space to step into cold, so a solid grasp of the vocabulary and an understanding of models and funds work will help you hit the...

Full Stack Engineer | Cross Asset Trading | React, C#, .NET, SQL Server | London | Hybrid 1-2 days onsite | Up to £550 p/day | Outside IR35 We’re working with a cross-asset trading business that’s firmly tech-first, where engineering sits at the heart of how the firm operates. They’re looking for a Full Stack Developer to join on a contract basis and help build the applications their traders and teams rely on every day. On the technical side, this is a front end-led role, with roughly 60% of your time in React, 30% across .NET, C# and API development, and the remaining 10% in SQL Server. Experience with the modern React ecosystem will set you apart, particularly the TanStack suite, which has become the industry standard for data access and routing. Just as important, you’ll bring a background in regulated environments. Finance can be a tricky space to step into cold, so a solid grasp of the vocabulary and an understanding of models and funds work will help you hit the...

Full Stack Engineer | Cross Asset Trading | React, C#, .NET, SQL Server | London | Hybrid 1-2 days onsite | Up to £550 p/day | Outside IR35 We’re working with a cross-asset trading business that’s firmly tech-first, where engineering sits at the heart of how the firm operates. They’re looking for a Full Stack Developer to join on a contract basis and help build the applications their traders and teams rely on every day. On the technical side, this is a front end-led role, with roughly 60% of your time in React, 30% across .NET, C# and API development, and the remaining 10% in SQL Server. Experience with the modern React ecosystem will set you apart, particularly the TanStack suite, which has become the industry standard for data access and routing. Just as important, you’ll bring a background in regulated environments. Finance can be a tricky space to step into cold, so a solid grasp of the vocabulary and an understanding of models and funds work will help you hit the...

FULLY REMOTE OUTSIDE IR35 We are looking for a Full Stack Developer with strong Node.js skills to develop and support frontend and backend systems. A central part of the role is connecting our AI platform with internal and third-party services through APIs and Model Context Protocol (MCP) integrations. You will build features across the application stack and help ensure they operate reliably in production. Key responsibilities Develop backend services in Node.js and JavaScript/TypeScript. Build and maintain frontend functionality using an appropriate modern web framework. Design, implement, document and integrate APIs connecting our platform, customer applications and external services. Develop MCP clients and servers that expose approved tools, resources and capabilities to AI applications. Define and validate JSON schemas, API contracts and integration payloads. Implement authentication, authorisation, secrets management and appropriate access controls. Build database...

Full Stack Software Developer Active SC TypeScript/React/Node.js Overview Outside IR35 £500-£540 a day Remote + adhoc onsite in South coast location Start ASAP 6 Month Contract Active SC - essential SR2 is recruiting an experienced Full Stack Developer to join an exciting greenfield project within a highly regulated area. This is a fantastic opportunity to build a brand-new TypeScript codebase from the ground up, working across both Front End and Back End development. You'll have plenty of autonomy, working closely with the Technical Lead to shape technical decisions, engineering standards and the overall solution. Due to the secure nature of this work applicants must already have active SC clearance. Unfortunately, due to the quick turn around required, we cannot put you through this if you do not already have it. Key Skills & Experience: Front End: TypeScript, React, modern CSS, accessibility Back End: TypeScript, Node.js, REST APIs,...