Top Java Developer Jobs in London

Join BlackRock as a Java Engineer to develop Aladdin's trading platform, using agile methodologies to deliver high-performance, fault-tolerant software solutions, collaborating with cross-functional teams.

Lead the architecture and delivery of the PACE platform, mentor engineers, manage production operations, and collaborate with stakeholders in alternative investments.

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 Senior Software Engineer, you will enhance the account details platform, focusing on backend development to support cross-border payments and improve customer onboarding.

The Senior Software Engineer II will lead the design of scalable, resilient systems for Wise's global payment network, primarily using Java and Spring Boot, while collaborating with cross-functional teams and mentoring junior engineers.

Responsible for software development and testing within the Investment and Trading engineering team, focusing on delivering innovative investment solutions and enhancing software quality and performance.

The Senior Software Engineer will design and implement tools for liquidity management, lead technical initiatives, and mentor junior engineers, directly impacting product and customer solutions.

Lead a team on FX real-time risk systems, manage deliverables, and act as the technical contact for trading and risk management.

As an AI Software Engineer, you'll design, develop, and deploy scalable AI systems, collaborating across teams to enhance product features using cutting-edge technologies in cloud-native environments.

As a Senior Backend Engineer, you will enhance accounting integrations and reporting, improve workflows, localize offerings, and build an extensible platform.

As a Principal Java Engineer, you'll design and develop scalable backend services for live football events, working in an agile team and mentoring others.

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.

As a Java Engineer at Oodle, you will design and build backend services, work with APIs, and engage in cross-team collaboration to improve system reliability.

The Senior Software Engineer will enhance the Acquiring Platform by expanding payment methods, optimizing APIs, and working on global ecommerce integrations while mentoring fellow engineers.

As a Senior Product Engineer, you will design and implement scalable Java-based services, lead development efforts, and mentor junior engineers, contributing to cross-functional projects within the Wise payment network.

Design, develop, and maintain scalable web applications and backend services for trading operations. Collaborate with traders and product teams to define requirements, implement high-performance APIs and data pipelines, troubleshoot full-stack issues, ensure code quality and security, research new technologies, and mentor junior engineers to deliver reliable, low-latency trading systems.

The Principal Java Engineer will design and optimize low-latency payment systems, develop APIs, deploy applications on AWS, and mentor peers.

Design, develop, and maintain cloud-based applications; provide technical leadership; manage junior team members; engage in agile project management.

Develop and maintain FIX APIs for IG Prime, enhance API capabilities, monitor performance, and support clients while collaborating with stakeholders.

Design, develop, and optimize scalable Java/Spring Boot backend services for real-time football data pipelines. Deploy and scale applications on AWS, implement event-driven architectures (Kafka/Pulsar/RabbitMQ/SQS), ensure system reliability and observability, and collaborate in an agile team to meet high-impact deadlines.

Design, build, and maintain high-performance Java backend systems that integrate and deploy AI/ML models. Develop RESTful microservices, optimize performance and security, implement CI/CD, work with cloud platforms and container orchestration, and collaborate with data scientists on scalable ML solutions.

As a Full Stack Engineer, you will handle the full development lifecycle, engage with stakeholders, and promote best practices in engineering.

Lead a Scrum team to design, develop, test and support scalable Java-based applications critical to SwapClear clearing operations. Drive high-quality code (Java 17+, Spring), contribute to frontend and cloud/container deployments, implement test automation, participate in production support (including rota), and document system designs while collaborating across business and CI teams.

Seeking a skilled Java Developer with SC Clearance to design and maintain back-end systems, utilizing AWS and deploying applications using Kubernetes. Collaborate on CI/CD pipelines and develop basic front-end applications with React.

The Java Developer will create new features for policy administration and claims handling, while also integrating new systems and documenting work according to standards.