Top Backend Developer Jobs in London

As a Lead/Staff Backend Engineer, you will design and scale the core API and data systems, mentor engineers, and influence technical strategy.

NetBox Labs seeks a Backend Engineer to design and maintain backend systems, collaborate on APIs, optimize data, and ensure software reliability. Ideal candidates have strong Golang and Python skills and 5+ years of experience.

The role entails developing scalable backend systems using Node.js and Nest.js, ensuring high performance and security, and optimizing microservices architecture. Responsibilities also include system monitoring, code quality checks, and collaboration within a fintech context.

The Staff/Lead Engineer role involves maintaining and enhancing video generation infrastructure, building monitoring tools, and ensuring scalable solutions while evaluating commercial impacts and guiding team direction.

Design, develop, and maintain backend services and APIs, optimize performance, ensure code quality, and contribute to architectural decisions.

As a Senior Backend Engineer, you'll design, build, and ship impactful code to enhance user satisfaction and business growth, collaborating with cross-functional teams for product improvements and customer focus.

As a Senior Backend Engineer, you'll develop core backend solutions for PerfectScale, manage data pipelines, implement features, and collaborate on system improvements.

You will influence the product roadmap, design and maintain systems, mentor team members, and contribute to an open-source culture in a fully remote team.

As a Backend Staff Engineer, you will lead technical standards, mentor junior engineers, conduct code reviews, and drive feature development in a fast-growing on-demand services environment.

As a Senior Backend Engineer, you will develop tools, APIs, and integrations, maintain the shared codebase, debug issues, and mentor team members in a fully remote work environment.

As a Senior Backend Engineer at RoomPriceGenie, you will develop scalable solutions using Python, Django, and FastAPI, collaborate with teams, and ensure quality code delivery while fostering a strong engineering culture.

As a Senior Backend Engineer, you'll build tools, APIs, and integrations, leading projects and mentoring other engineers while contributing to a cross-functional team.

As a Senior Product Engineer at Infracost, you'll collaborate with PMs and engineers to build reliable backends for real-time infrastructure insights, optimize database queries, and enhance developer workflows.

As a Senior Product Engineer at Secfix, you will design, build, and maintain backend systems, collaborating with product teams and mentoring junior engineers, while leveraging AI tools for development.

Responsible for building scalable distributed systems, mentoring teammates, innovating on technical solutions, and improving team processes. Requires expertise in backend languages, especially Golang and Typescript.

As a Senior Backend Engineer, you will design, build, and maintain scalable backend services for HubSpot's Global Search, collaborating with teams to optimize data retrieval and system performance.

The Senior Software Engineer II will develop impactful production code, design new features, and enhance user experiences while collaborating with cross-functional teams.

Seek a Senior Backend Software Engineer to architect and own a robust integrations platform, improving development lifecycle and mentoring the team. Requires 7+ years of experience in backend systems, especially with Node.js and integrations expertise.

Design, develop, and maintain backend services and APIs for the IAM platform. Collaborate to build features that meet security standards and optimize performance.

Design and develop backend services for the IAM platform, focus on performance and scalability, collaborate with teams, optimize security, and stay current with industry trends.

Lead Software Engineer responsible for back-end development, project ownership, and collaborating with product managers to shape AI-powered video generation solutions.

As a Backend Engineer (Data Engineering), design and build scalable data pipelines and infrastructure for processing security data, ensuring reliability and performance.

As a Backend Engineer, you'll develop features for Proton Drive, collaborate with teams, perform code reviews, and implement testing strategies.

As a Lead Backend Engineer, you'll manage and enhance Proton's marketing technology systems, integrating tools and supporting campaigns while ensuring security and privacy standards.

As a Backend Engineer, you'll design and develop backend APIs using PHP/Symfony, lead complex projects, and ensure high-quality service for B2B clients.