Top Full Stack Developer Jobs in London

As a Full Stack Engineer II, you'll design tools for automating and managing CrowdStrike's cloud infrastructure while collaborating on software solutions and enhancing team skills.

Build and maintain multi-tenant, high-scale embedded finance infrastructure and cross-domain product features. Design integrations and solutions for enterprise customers, balance performance and velocity, and collaborate across Product, Design, Compliance, and Sales to deliver production-ready systems.

Lead design and implementation of scalable backend and frontend systems, own domains end-to-end, set technical strategy and architecture, mentor engineers, drive cross-team initiatives, and improve reliability, performance, testing, monitoring, and CI/CD for customer-facing microservices.

Design and develop technology solutions in partnership with global teams, addressing challenges in cancer care through innovative software engineering practices.

We are seeking a Principal Full Stack Engineer to lead projects, mentor teams, and ensure high-quality software delivery. The role involves extensive coding, cloud solutions, and effective communication with stakeholders to align technical decisions with business goals.

The Full Stack Engineer will develop and manage software solutions to enhance trading workflows, collaborating with business stakeholders, and ensuring high-quality code and continuous delivery.

The Staff Full Stack Engineer will lead delivery squads, build scalable web applications, mentor team members, and ensure engineering excellence.

As a Full Stack Engineer, you will design and develop software solutions for trader efficiency, collaborate with stakeholders, ensure code quality, mentor junior developers, and manage full software lifecycle in a DevOps-focused environment.

Design and build scalable backend services and APIs for high-volume multi-chain transaction flows, lead DeFi and node integrations, optimize production systems for performance and security, and drive features from architecture through deployment.

Design, build, and deliver highly available, scalable enterprise software using .NET/C#. Promote TDD, CI, automation, architecture best practices, lead technical workshops, mentor engineers, conduct code reviews, and collaborate with stakeholders to improve development processes and tooling.

Lead onshore delivery and technical execution for Google Cloud programs. Own solution design, architecture oversight, stakeholder management, governance, and cross-functional team leadership across distributed teams to deliver scalable, secure cloud-native solutions.

Design, build, and run full-stack features from data model and API to UI. Embed and scale AI tooling across the SDLC, ensure security, reliability, and test coverage, diagnose production issues, collaborate with product/design, mentor engineers, and drive engineering standards in a regulated healthcare environment.

Design and build next-generation AI-assisted interfaces for complex IP workflows. Lead front-end architecture, rapidly prototype and ship features from user feedback, integrate advanced WYSIWYG editors, and contribute across the full stack to ensure robust, high-performance delivery as a founding engineering hire.

Design, build, and maintain full-stack web applications using React and .NET Core. Collaborate with data science, product, and design to deliver scalable cloud solutions, APIs, and UI prototypes. Contribute across discovery, delivery, QA, DevOps, and CI, applying SOLID principles and automated testing.

The FullStack Engineer will develop innovative technology for delivery services, working within a dynamic team, and contributing to global expansion efforts.

The Full-Stack Engineer will develop core components of a trading system, support production systems, and contribute to trading logic design.

As a Senior Full-Stack Engineer, you will architect scalable solutions on GCP using Node.js, React, and Next.js, mentor engineers, streamline data mapping, and work cross-functionally to enhance PIM integrations.

Build and maintain full-stack features for mobile and web using TypeScript, React/React Native, and a serverless AWS backend. Integrate home automation devices, work across frontend and backend, collaborate with product and design, debug and test systems, and support production lifecycle while engaging with customers and external partners.

Lead enterprise Java full-stack strategy and modernization (cloud, microservices, event-driven, API platforms). Champion AI-driven development and LLM/GenAI tooling. Oversee backend (Java) and frontend (React/Angular) delivery, ensure secure scalable design, CI/CD and DevSecOps practices, reduce technical debt and vulnerabilities, and lead large-scale programs for velocity, reliability, and cost efficiency.

Lead architecture and engineering across loans enablement platform pods; mentor developers; build prototype and production code; drive non-functional requirements (performance, scalability, resiliency); promote reactive programming, contract-first APIs, microservices, and AI software development tooling; present designs to stakeholders and support adoption of GenAI integrations and AI coding assistants.

Join a small team to improve a tech product aimed at upskilling users in MENA, working with JavaScript and Node.js in a collaborative remote environment.

Design and implement front-end and back-end services for a scalable platform managing private assets lifecycle. Collaborate with cross-functional teams, build Java Spring Boot and Angular components, ensure automated test coverage, expose documented APIs, optimize performance/resilience, and conduct peer code reviews.

Lead the architecture and development of backend services and APIs for e-commerce platforms, ensuring scalability and security while collaborating across teams.

Own and productionize an internal AI agent platform: build agent workflows, frontend UIs, and Python/FastAPI backends; implement observability and evaluation (Ragas, Langfuse); integrate cross-cloud systems; mentor engineers and drive durable, testable, regulated fintech automation.

Part-time full‑stack developer to maintain and extend a global Laravel backend and modern frontend (Angular/React/Vue). Responsibilities include architecture, DevOps tasks, code reviews, using MySQL, PHP/JavaScript/TypeScript, GitLab workflows, and AI-assisted coding tools. Work in one-week Scrum sprints, ~10+ hours/week, equity-based compensation; applicant must hold a full‑time job.