8 full stack developer engineer jobs found in London, Greater London

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...

SC Cleared Typescript Engineer / Outside IR35/ Occasional Travel / 12 month Contract  We’re looking for an experienced Full Stack Javascript Developer to join a greenfield digital programme within a secure environment. You’ll be working across the full stack, helping build a new TypeScript-based platform from the ground up and taking genuine ownership of features from development through to production. Essential Experience  Active SC  Strong TypeScript experience across front and back end React Node.js and REST APIs PostgreSQL, including schema design and query optimisation Unit, integration and end-to-end testing Docker and containerised applications CI/CD, ideally GitHub Actions OIDC / Keycloak authentication Agile delivery experience Bonus: Experience with Kubernetes/OpenShift, Terraform/Helm, Grafana, Prometheus or Loki would be beneficial.  If you are interested in this role and have relevant experience, please apply or email your latest CV to (url removed)...

SC Cleared Typescript Engineer / Outside IR35/ Occasional Travel / 12 month Contract We're looking for an experienced Full Stack Javascript Developer to join a greenfield digital programme within a secure environment. You'll be working across the full stack, helping build a new TypeScript-based platform from the ground up and taking genuine ownership of features from development through to production. Essential Experience Active SC Strong TypeScript experience across front and back end React Node.js and REST APIs PostgreSQL, including schema design and query optimisation Unit, integration and end-to-end testing Docker and containerised applications CI/CD, ideally GitHub Actions OIDC / Keycloak authentication Agile delivery experience Bonus: Experience with Kubernetes/OpenShift, Terraform/Helm, Grafana, Prometheus or Loki would be beneficial. If you are interested in this role and have relevant experience, please...

SC Cleared Typescript Engineer/Outside IR35/Occasional Travel/12 month Contract We're looking for an experienced Full Stack Javascript Developer to join a greenfield digital programme within a secure environment. You'll be working across the full stack, helping build a new TypeScript-based platform from the ground up and taking genuine ownership of features from development through to production. Essential Experience Active SC Strong TypeScript experience across front and back end React Node.js and REST APIs PostgreSQL, including schema design and query optimisation Unit, integration and end-to-end testing Docker and containerised applications CI/CD, ideally GitHub Actions OIDC/Keycloak authentication Agile delivery experience Bonus: Experience with Kubernetes/OpenShift, Terraform/Helm, Grafana, Prometheus or Loki would be beneficial. If you are interested in this role and have relevant experience, please apply or email your latest CV to (see below)...

6 month contract, fully remote Full Stack Developer - .NET and React Up to £350 per day outside IR35 A retail company are hiring for a Senior Full Stack Engineer to join their order fulfilment team to help design, build and evolve the digital platform. This is a hands-on role where you'll work closely with product and engineering teams to solve real business problems and deliver impactful digital experiences. It is a modern engineering function that uses agentic AI tools throughout its development process. Responsibilities Design build and maintain scalable secure and high-performing E-commerce applications using React C# .NET and Azure Deliver end-to-end features across the stack from Front End experience through to Back End services Work in short iterative cycles alongside product and E-commerce teams Contribute to the design of cloud-native architectures on Microsoft Azure Build and maintain robust APIs and services using .NET Develop responsive...

6 month contract, fully remote Full Stack Developer - .Net and React Up to £350 per day outside IR35 A retail company are hiring for a Senior Full Stack Engineer to join their order fulfilment team to help design, build and evolve the digital platform. This is a hands-on role where you 'll work closely with product and engineering teams to solve real business problems and deliver impactful digital experiences. It is a modern engineering function that uses agentic AI tools throughout its development process. Responsibilities Design build and maintain scalable secure and high-performing ecommerce applications using React C# .NET and Azure Deliver end-to-end features across the stack from frontend experience through to backend services Work in short iterative cycles alongside product and ecommerce teams Contribute to the design of cloud-native architectures on Microsoft Azure Build and maintain robust APIs and services using .NET Develop...

Senior Software Engineer | AI Enablement (Claude Code) £800–£900/day | Outside IR35 Preferred | London Hybrid (2 days/week) | ASAP I'm working with a leading Fintech looking for 4–5 experienced Software Engineers to help embed Claude Code across their engineering teams. This isn't a traditional AI Engineering role. You'll be working directly with developers, pairing, coaching and helping teams integrate Claude Code into their everyday engineering workflows. What you'll be doing: Working directly with backend and full-stack engineering teams to embed Claude Code into their daily development workflows. Pair programming and coaching engineers on effective AI-assisted development. Implementing and optimising CLAUDE.md files, custom slash commands, subagents, hooks and context management. Helping teams integrate AI into testing, CI/CD, code reviews and secure development practices. Identifying opportunities to improve engineering productivity and providing...

Senior Azure DevOps Engineer / Contract (Outside IR35) / London / 6-month initial contract We are currently partnering with a London-based end client that manages £20 billion in assets. Known for its high-performance, institutional-grade financial operations, the company is looking to onboard a seasoned Azure DevOps Engineer to strengthen and automate its modern cloud, data, and application platform. Client & Assignment Context Embedded within the Technology & Infrastructure team of a premier private debt and alternative investments house, you will collaborate closely with platform leads, data teams, and full-stack software engineers. Your primary focus will be automating Azure and Snowflake infrastructure as code, maintaining a production-grade Apache Airflow platform hosted on AKS, and optimizing CI/CD workflows across both GitHub and Azure DevOps. Key Responsibilities Infrastructure as Code (IaC): Design, build, and maintain Azure and...