Top Backend Developer Jobs in London

Lead and build scalable backend services for European accounts using Java/Kotlin and Spring Boot. Design account-level features, work with product and analytics, drive architecture, mentor engineers, and deliver data-driven solutions for local payment methods and account products.

As a Principal Backend Engineer, you will build scalable backend services with Java, design APIs, implement microservices, and work with AWS cloud technologies.

As a Backend Engineer, you'll build and improve technology for small businesses, focusing on developing reliable code, collaborating on projects, participating in code reviews, and enhancing operational efficiency.

The role involves designing and developing backend services, maintaining RESTful APIs, and optimizing systems for financial transactions with a focus on automation and security best practices.

Lead client accounts as a senior technical advisor, identifying opportunities and driving account growth. Translate business needs into scalable, secure full-stack architectures across cloud, data, integration, and DevOps. Support proposal development, oversee solution design and delivery, mentor engineers and architects, and contribute to practice IP and engineering best practices. This is a billable, client-facing director role focused on strategic technical influence and delivery quality.

The role involves designing and building cloud-native applications using Java and Spring Boot, focusing on scalable microservices for financial institutions while leading agile practices.

The Senior Backend Engineer at Teya will design, develop, and maintain core backend systems supporting various aspects of the business, ensuring scalability and reliability while collaborating with cross-functional teams and mentoring developers.

The Senior Software Engineer will lead the development of backend systems for payment processing, collaborating with teams, setting goals, and fostering quality and ownership in code development.

As a Backend Engineer, you'll enhance accounting integrations, improve workflows, expand global offerings, and build a scalable platform architecture.

The Senior Backend Software Engineer will design, develop, and maintain scalable backend services, optimize applications, build APIs, and collaborate across teams to improve user workflows and product efficiency.

The Senior Backend Software Engineer collaborates in teams to design and build scalable infrastructure systems, optimizing data-driven applications across sectors.

Backend Software Engineers at Palantir build scalable software solutions, collaborate across teams, and develop systems for data processing and storage, enhancing product capabilities.

Backend Software Engineers at Palantir build and maintain scalable backend services, develop APIs, optimize applications for performance, and collaborate across teams to shape user workflows.

As a Staff Backend Engineer at GitLab, you'll enhance backend infrastructure for CI, integrate AI features, and ensure reliability and performance in CI/CD workflows.

As a Senior Backend Engineer, you'll manage Kubernetes clusters, implement GitOps workflows, establish infrastructure as code practices, and enhance platform reliability and security controls.

The Staff Backend Engineer enhances Developer Experience by improving engineering workflows, reducing testing flakiness, optimizing CI/CD pipelines, and fostering a culture of learning across teams.

Lead development projects focusing on customer experiences and operational management. Mentor other engineers, make strategic tech decisions, and solve complex challenges while contributing high-quality code.

As a Senior Backend Engineer at DuckDuckGo, you'll lead backend projects, mentor engineers, and develop AI-enhanced features for the company's privacy-centric product line.

Build, operate, and extract guest-facing backend services for a high-traffic booking platform using PHP and Go. Design APIs for agentic interfaces, improve performance and page speed, collaborate with Product and Design, and leverage AI coding tools to accelerate delivery while contributing to architecture and migration from a monolith to service-oriented systems.

Lead design and delivery of a greenfield trust accounting backend: build secure, scalable, auditable financial services, enforce quality and observability, collaborate with product/finance/legal, and mentor engineers.

Build and maintain scalable backend and platform infrastructure powering enterprise-grade LLM workloads. Design systems across APIs, data flows, job orchestration, observability, and reliability to accelerate product teams and ensure high-throughput, low-fragility LLM processing for large customers.

The Backend Engineer will write high-quality Go code, implement microservices, manage legacy service migration, and optimize system performance.

Develop and maintain scalable backend services, focusing on TDD, DDD, and CI/CD. Collaborate with teams to optimize systems and code quality.

The Senior Backend Engineer will develop scalable backend services using Go, optimize systems for performance, and collaborate with teams on technical designs.

The role involves developing digital solutions, leading teams in Agile and DevOps environments, and mentoring while ensuring high-quality Java-based systems development and testing.