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.

Design and maintain scalable web applications and backend services for trading operations while optimizing performance and mentoring junior engineers.

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.

Design, develop, and deliver frontend (React) and backend services; produce architecture artifacts; analyze large data sets and visualizations; improve code quality and system resiliency; mentor junior engineers; use enterprise-authorized AI-assisted development tools; contribute to engineering communities and continuous improvement of infrastructure platform services.

Develop and maintain data pipelines and business applications to support model risk governance. Implement model performance monitoring, workflow automation, and LLM-enabled solutions using Python and web frameworks. Emphasize data controls, testing, AI-assisted development tooling, and collaboration with cross-functional stakeholders to deliver secure, reliable analytics and efficiency tools.

Build and maintain full-stack features across frontend and backend in TypeScript. Shape architecture, support onboarding and migrations, fix bugs, and support customer success. Work across devops, testing, and shipping production systems for charity-focused product features.

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.

Develop and maintain Python and Angular modules for liquidity forecasting and analytics. Build high-performance data processing pipelines using Polars, Databricks, Snowflake, and Spark. Partner with Treasury and FRS stakeholders to translate business requirements, contribute to architecture decisions, and apply AI-enabled engineering practices to improve reporting and analytics used by senior management and Treasury.

Design and implement a cloud platform to manage a fleet of humanoid robots, build backend APIs and robot-side services, deploy secure infrastructure (CI/CD, containers, IaC), implement observability and testing pipelines, automate workflows, and maintain documentation.

Build full-stack, low-latency trading and pricing tools for options traders. Collaborate with traders, researchers, and business stakeholders to design intuitive frontends and scalable backend services, prototype and productionize distributed systems, and expand trading capabilities globally while improving performance, stability, and usability.

Build and maintain React front-end components and responsive UIs for a control plane; orchestrate agentic harnesses (Claude) to generate, validate, and test code; contribute to Python/FastAPI back-end APIs; create templated archetypes and golden-path tooling; collaborate with UX; ensure performance, security, and testing-first maintainability.

Build end-to-end internal products and platform services for Spotify's subscription business, spanning frontend (TypeScript/React/Next.js), backend services (Java), GraphQL/gRPC APIs, and PostgreSQL. Design secure, auditable, SOX-compliant workflows, collaborate on architecture, write well-tested code, and participate in on-call rotations to ensure platform reliability.

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

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 and mentor an agile team to design, develop, secure, and operate scalable cloud-native applications using modern front-end tech and AI-assisted engineering practices; drive automation, code quality, resiliency, and operational stability.

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.

Core full-stack engineer responsible for assessing requirements, delivering front-end and back-end features, writing testable code and automation, deploying software, contributing to architecture, and QA, debugging and documenting code.

Design and implement privacy-first full-stack systems to keep user location data inaccessible. Work across React/TypeScript frontends and Node.js or Go backends, collaborate with product and design, and deliver well-tested production features.

As a Full Stack Software Engineer, you'll develop and architect user interfaces, manage APIs for data workflows, and improve applications within the Foundry platform, while collaborating closely with users to understand their needs.

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.

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.

Design, build, test, and maintain scalable full-stack web applications and integrations using Java, Python, and React. Implement AI-enabled features, event-driven data pipelines, and marketing integrations (CDP/CRM/CMS). Improve code quality via AI-assisted tools, CI/CD, observability, and security/compliance best practices while collaborating with product, marketing, and partners.

Design, build, and operate secure, high-quality full stack software in an agile team. Develop and review production code (frontend and backend), support lifecycle and incident management, analyze data for improvements, and apply CI/CD, resiliency, and secure coding practices while leveraging enterprise-authorized AI-assisted development tools.

Design, develop, deploy, and maintain advanced AI products and data pipelines. Collaborate with engineers, data scientists, and product owners to deliver production-grade, secure, scalable code. Architect AI-enabled engineering workflows, improve SDLC automation, ensure compliance, and provide technical leadership and architecture governance.