Top Backend Developer Jobs in London

Design, build, and maintain high-performance APIs and microservices. Optimize data pipelines and databases while collaborating with product teams.

The Backend Engineer will design and develop scalable Laravel services and APIs, optimize systems for GenAI integrations, and work with AI teams to enhance civic engagement through technology.

As a Backend Engineer, you will migrate from NoSQL to Postgres, manage payments with Stripe, and architect REST APIs for a media application.

The Senior Staff Backend Engineer will lead technical direction for systems, manage engineering standards, mentor teams, and ensure alignment with broader company goals. Responsibilities include hands-on coding, architecture, and partnership with product teams to maximize impact.

The Staff Backend Engineer will lead the technical vision for Depop's data platform, focusing on data ingestion, scalability, observability, and architecting data solutions while mentoring team members.

Design and build backend systems for Quadrivia's clinical AI platform, ensuring reliability, high availability, and compliance with healthcare regulations while collaborating with cross-functional teams.

Design, implement and maintain scalable, performant microservices; write automated tests; collaborate with engineering teams; manage deployments from testing to production; translate customer requirements into tickets.

Design, implement and maintain scalable, performant microservices; write automated unit and integration tests; manage deployments from testing to production; collaborate with engineering teams; translate customer requirements into deliverables and tickets.

As a Senior Backend Software Engineer, you will develop and maintain the SaaS platform, focusing on user-centric design and implementation using a variety of technologies. Your role involves collaborating with teams to meet customer needs and enhance the product.

As a Senior Backend Engineer, you'll write impactful production code, design new features, collaborate across teams, and help SMBs grow.

The role involves providing backend technical support for gaming projects, developing online services, and collaborating with global game studios to optimize backend performance and stability.

Lead backend architecture and cross-functional projects, build scalable Python/Django services and integrations, mentor engineers, improve performance and observability, and drive data-informed product decisions.

Lead technical strategy and architecture for Learning Teams, drive end-to-end strategic initiatives, evolve core services for scalability and reliability, improve engineering practices and developer experience, mentor senior engineers, and make build-vs-buy and tooling decisions.

Work in a cross-functional team to design, build, and own backend features and services (primarily Python/Django), implement A/B tests, ensure monitoring and reliability, troubleshoot production issues, and guide technical decisions to improve quality and scalability.

Lead architecture and delivery across the Consumer domain, specialising in search. Drive scalable, resilient system design, influence cross-team product decisions, mentor senior engineers, and raise engineering standards and observability.

As a Back End Engineer, you will build scalable services, integrate data sources, and contribute to the development lifecycle, ensuring code quality and supporting the product. You will collaborate with cross-functional teams to enhance customer insights and experience.

As a Staff Backend Engineer, you'll lead the technical vision for Payments and Fulfilment systems, mentor engineers, and ensure scalability and security.

Lead assessment and redesign of backend architecture to improve reliability, scalability, multi-tenancy, and security. Design core abstractions and pipelines with platform/infrastructure teams, set technical direction for scaling to thousands of customers and tens of millions of documents, raise engineering standards, and ship production-grade systems while remaining hands-on.

The Back End Engineer will develop scalable solutions, manage API integrations, and contribute to complex projects while collaborating closely with the Finance Technology team.

Back-end engineer to build and scale NLPatent's AI-first patent research platform. Work with CTO and senior engineers to develop Python/Django services, containerized deployments, and relational database-backed features. Collaborate on integrating NLP/LLM capabilities and ensure production-ready systems. Hybrid role requiring three days onsite weekly.

The role involves developing and maintaining back-end systems for e-commerce platforms using .Net technologies, ensuring data delivery and optimizing application logic. Responsible for integrating API services and enhancing application performance.

As a Senior Product Engineer, you'll build AI-powered workflows, enhance billing infrastructure, and ensure the reliability of production backend systems while collaborating with a small cross-functional team in a fast-paced environment.

The Senior Backend Engineer will design and maintain backend services for CI infrastructure, migrate services from Python to Java, and improve developer productivity through enhanced testing and monitoring systems.

Build and maintain backend services for client CI infrastructure, drive migrations from Python to Java, improve local testing and observability, implement monitoring and logging, document services, and collaborate to enhance developer CI experience and automation.

The Senior Back-End Software Engineer will implement features, improve logic, write integrations with APIs, and contribute to design discussions within a startup environment.