Top Java Developer Jobs in London

The SDET role involves ensuring quality through testing, integrating CI/CD, developing QA processes, and coaching team members on QA best practices.

As a Senior Engineer you will develop scalable software solutions utilizing AI, focusing on API-first microservices, cloud-native applications, and high-quality code delivery.

Responsible for platform development and management, collaborating with stakeholders for requirements, and maintaining code quality by mentoring juniors and performing code reviews.

The Senior Java Engineer will develop and maintain a SAAS platform, collaborate in Agile teams, and ensure high-quality software delivery.

As a Front-End Developer, you will design and develop web interfaces, collaborate with teams, mentor juniors, and ensure adherence to coding standards and best practices.

As a Senior Reliability Engineer, you will enhance system reliability, optimize performance, and implement monitoring for IG's trading platform, collaborating with development teams to improve operational excellence.

The Senior Java Developer will work on pricing and analytics systems within the FX Options team, supporting traders and sales with modernized technology integration.

Develop and maintain scalable microservices and RESTful APIs using Java and Spring Boot on AWS infrastructure. Collaborate with the team to deliver high-quality services.

The Senior Java Engineer will design complex systems, optimize performance, maintain code quality, and ensure application reliability. Responsibilities include translating requirements into applications and troubleshooting issues.

As a Backend Software Engineer at Engine by Starling, you will develop and deliver features for our banking platform, contribute to our internal tooling, and collaborate across teams, embracing a culture of learning and ownership.

As a Senior Engineer, you'll lead projects, contribute to the platform, build new features, and promote a learning culture focused on engineering excellence.

Develop performant code across the stack in a collaborative environment, utilizing Java, JavaScript, and various backend and testing tools, while engaging in pair programming and continuous learning.

Develop complex distributed systems using Java, Kafka, and Kubernetes. Mentor team members and contribute to all phases of the product lifecycle.

The role involves delivering software solutions, advocating for high coding standards, applying automation techniques, and ensuring operational performance.

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.

The Senior Full Stack Engineer will develop innovative applications, manage the entire development cycle, and use XP with remote pairing.

The role involves improving Elasticsearch's concurrent indexing, maintaining cluster coordination, addressing performance issues, and supporting engineers. Requires strong Java and distributed systems knowledge.

As a Senior Software Engineer, you'll design and implement high-performance cloud-native backend services and manage DevOps responsibilities overall for IG's new crypto platform.

The Junior Software Developer at LMAX will develop and maintain high-performance software using Java, work in collaborative environments with a focus on continuous learning, and actively participate in pair programming and code quality assurance.

Design, develop, and maintain secure applications using Node.js and other technologies, focusing on building REST APIs, microservices, and contributing to government projects.

Join Margo as a Front Office Developer, focusing on trading platform development, maintaining systems, and collaborating with traders and researchers in finance.

Join 3Pillar as a Junior Software Engineer, focusing on Java and Spring Boot to develop scalable software solutions and collaborate with teams.

As a Junior Software Developer, you'll train in Java and Scala, build real applications, and collaborate globally to solve business challenges.