Top Full Stack Developer Jobs in London

Lead design, build, and operate cloud-native AWS microservices using Kubernetes. Drive CI/CD, containers, IaC, monitoring, reliability, and incident resolution. Champion AI-assisted engineering practices, mentor engineers, participate in architecture reviews, and optimize platform availability and scalability for low-latency trading.

Design, build, and maintain scalable web applications, high-performance APIs, microservices, and data pipelines for trading systems. Collaborate with traders and product teams, troubleshoot full-stack issues, optimize performance, ensure security and best practices, and mentor junior engineers.

As a Senior Full-Stack Engineer, you'll design and maintain backend services, collaborate with teams, and implement technical solutions while ensuring performance and security through best practices.

As a Backend/Fullstack Engineer at Hook, you'll design and build product features, manage architecture, review code, and improve processes, focusing on both frontend and backend development using Python and React.

As a Full-Stack Engineer, you will enhance the consumer portal experience by developing a high-performance website using various technologies, focusing on React and TypeScript while collaborating across teams.

Build and ship backend-leaning fullstack features (APIs, services, integrations, React frontend). Scope solutions, implement, and own features end-to-end. Collaborate with product and design, contribute to architecture and technical discovery, ensure scalability, reliability, and security best practices, and improve developer experience and tooling.

As a Full Stack Engineer, you will develop features for the Avios App, enhancing the user experience while collaborating with a mobile product team. Responsibilities include building scalable solutions, code reviews, mentoring, and maintaining performance across mobile and backend technologies.

Build and own a centralized Customer Risk Assessment platform to aggregate fincrime signals. Design, develop, and deploy resilient backend microservices (Java/Spring Boot) and intuitive frontends (React/TypeScript). Drive risk-mitigation components and scalable servicing workflows, collaborate cross-functionally, and take product ownership from problem discovery to production delivery.

Design, build, and maintain scalable, secure full-stack applications using Java and Angular. Lead integration and deployment of agentic AI, implement microservices and event-driven architectures, collaborate with data scientists, and promote CI/CD, testing, security, and best practices. Mentor developers and support the full software lifecycle in a hybrid enterprise environment.

As a Software Engineer at Wexler, you'll architect and build full-stack applications, develop features, collaborate with AI engineers, and contribute to technical decisions while working in a fast-paced startup environment.

The Full Stack Developer will design, develop, and maintain web applications using Strapi CMS and collaborate within an Agile team to deliver user-centred digital services that meet accessibility standards.

Full Stack Developer responsible for frontend and backend implementation of websites, mobile apps and e-campaigns using React/Next.js and WordPress. Collaborate with design and development teams, maintain development standards, build scalable, reusable solutions, and ensure code quality, accessibility, and SEO best practices.

Drive architecture and implementation of scalable, multi-tenant embedded finance infrastructure using React and TypeScript. Own cross-domain features, design integrations for enterprise customers, collaborate with Product/Design/Compliance/Sales, and optimize for performance, maintainability, and production excellence to support high-scale fintech customers.

Develop and enhance bespoke backend-focused full-stack applications for post-trade functions (Treasury, Finance, Risk, Settlements). Design databases, build .NET services, deploy to Azure, support CI/CD, engage business stakeholders, and improve development processes. Contribute to BI and data-visualisation solutions and provide operational support.

Lead full-stack engineering for low-latency, front-office trading systems in London. Drive system design, code quality, AI-enabled development, and collaborate with product, trading, and sales. Mentor the team, deliver scalable mission-critical solutions, and work in a fast-paced, results-driven environment.

Design, build and maintain Microsoft Cloud applications using Power Apps/Pages and Azure services. Implement Entra ID authentication, Azure Functions/App Services, Logic Apps and Blob storage. Create Azure Data Factory pipelines and APIs (REST/GraphQL), integrate external services and LLM data pipelines, and ensure performance, security, and scalability while collaborating with customers to turn requirements into streamlined apps.

Build, test, and deploy full-stack features and integrations for an AI-driven NHS primary care platform. Own end-to-end features, design APIs, optimise performance, maintain reliability, collaborate with product and clinical teams, and participate in incident response and on-call rotations.

Lead frontend or full‑stack development for ONDA's web and mobile apps. Own architecture and delivery, iterate features via A/B testing, collaborate with product and leadership, debug across the stack, and help build the engineering team and roadmap.

Looking for a founding full-stack engineer to join a startup. Candidates should share their life journey and software engineering projects in a personal cover letter.

Design, develop, and support enterprise-grade applications using .NET/.NET Core and Python; define application and data architectures (relational, NoSQL, data lakes, streaming); advise on on‑prem and cloud infrastructure (VMs, containers, Kubernetes/AKS, Azure); drive SDLC/DevOps practices and CI/CD; troubleshoot cross-layer issues; collaborate with stakeholders to deliver resilient, secure, and scalable insurance-focused solutions.

Work as a Full Stack Developer building web and mobile applications for clients. Collaborate with small agile teams, engage directly with stakeholders, deliver bespoke solutions, and grow into mentoring and technical advisor responsibilities while expanding technical skills.

Own and refactor the in-house Pubity Suite: ship new modules, manage workflow orchestration (n8n), integrate LLMs (Claude) and data warehouse (BigQuery), set engineering standards, and work closely with editorial, commercial and data stakeholders to build production AI-native features.

Design, implement and operate full-stack features end-to-end: backend services and APIs in Python, frontend applications in React+TypeScript, and deploy/manage cloud-native AWS infrastructure. Maintain, monitor, and improve production systems, CI/CD pipelines, testing, and developer workflows while collaborating with product and stakeholders.

Develop the Uncountable Web Platform for scientists to upload and analyze experiments, involving both front-end and back-end work.

Full-Stack Engineer responsible for developing and maintaining front-end and back-end components, collaborating on product solutions, and improving user interfaces.