Top Java Developer Jobs in London

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

The Senior Software Engineer will enhance the Acquiring Platform by designing and implementing payment methods, APIs, and managing stakeholder relationships. Responsibilities include building scalable infrastructure for merchant payment systems and optimizing distributed architectures.

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.

Seeking a backend engineer to enhance user experiences and lead product decisions for an ad server platform. Responsibilities include developing features, collaborating with teams, ensuring code quality, driving improvements, and supporting production environments.

The FX Risk Java Developer (VP) will develop high-performance Java applications for global banking, focusing on risk calculations and resilient systems. Responsibilities include designing data structures, implementing algorithms, and supporting projects in a front office environment.

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

The role involves the technical implementation of FX trading systems, collaboration with teams, system architecture design, and enhancing deliverable quality. Candidates should have experience with FX, ultra low-latency development, and strong communication skills.

As a senior developer, you will design and implement microservices, collaborate with teams, optimize software performance, and mentor junior developers.

Lead Java Developer responsible for delivering Real-Time and On-Demand Risk enhancements, managing the full development lifecycle, collaborating with global teams, and driving operational improvements.

As a Lead Java Developer, manage applications development teams, communicate project progress, provide technical oversight, and shape future product direction while ensuring compliance and stakeholder management.

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

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 design, build, and optimize medical services, collaborating with product owners and employing best software practices. Involvement with cloud technologies and integration testing is expected, alongside maintaining and enhancing existing services in a microservices architecture.

Lead the development of scalable cloud-native solutions using AWS and Java. Provide technical leadership, mentoring, and manage high-complexity projects in agile environments.

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.

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

Design and develop high-performance Java applications for real-time trading and risk systems, optimizing performance and providing production support.

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.

The Senior Software Engineer will manage impactful projects, design backend systems, ensure compliance, and enhance customer experiences through technical solutions.

Develop tooling for Citi's developer community using Java and SpringBoot. Engage in all SDLC phases and serve as a trusted consultant, enhancing developer experience and fostering continuous learning.

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.

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.

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

As the FX Risk Lead Java Developer, you will design and develop Java microservices, optimize data solutions, implement real-time data processing, and ensure application scalability and reliability. You will collaborate with DevOps, conduct code reviews, and document system architecture.

The FX Risk Lead Java Developer designs and maintains Java microservices for high-throughput applications, optimizes data processing solutions, and ensures system reliability in a cloud-based environment.