senior java developerin jobs in London

Wise Platform is seeking an API Experience Engineer to join the API Experience Team in a hybrid London-based role. You will design, build, and lead scalable public APIs with Java, Spring Boot, Kafka, and PostgreSQL, shaping developer experience for global partners.The role emphasizes API standards (REST, OpenAPI/Swagger, OAuth2), mentorship, cross-functional...

Rightmove is hiring a Senior Backend Engineer in London to design and deliver scalable features for our platform. You will work with Java 17+, Spring Boot, and a modern tech stack to empower millions of users and thousands of agents.The role emphasizes ownership, collaboration, and performance improvements within a hybrid, office-plus-remote setup. You will...

Are you passionate about building modern, scalable software solutions that make a meaningful impact?Do you enjoy collaborating across global teams, solving complex technical challenges, and using emerging technologies to drive innovation?About the BusinessLexisNexis® Risk Solutions provides customers with solutions and decision tools that combine public and...

**Senior Java Developer (x2) – Retail Banking Payments/Transactions** **Contract:** 12 Months **Rate:** £800 per day (Inside IR35) **Location:** Canary Wharf, London – 3 days onsite / 2 days WFH We are currently seeking 2 **experienced Senior Java Developers** to join a major **retail banking transformation programme** within a leading financial...

Hunter Bond in London is seeking a Java Developer with strong finance sector experience to join a leading trading firm. You will work on Greenfields development projects, focusing on buy-side trading platforms and collaborating with top developers in the sector.This is a 6 month rolling contract with a very high chance of extension, offering exposure to...

Capital One UK, London, is seeking a Senior Software Engineer to design, develop and maintain software that automates core business processes. You will work across product, design and operations to create high-impact solutions in a hybrid London setting.You’ll contribute to architectural decisions, automate deployments and testing, and collaborate with a...

Senior Java Developer (AWS, Microservices) - Travel - SussexDaily rate: £550 - £700 (inside IR35)Duration: 3 - 6 monthsHybrid: 1 - 2 daysStart: ASAPMy new client is looking for a Senior Java Developer (AWS, Microservices) to join the team on a contract basis. You will play a key role in designing, developing, and maintaining secure, scalable, and...

NTT DATA is seeking an experienced Java Backend Developer in London to design, develop, and support scalable enterprise applications using Java and Spring technologies. The role involves feature development, collaboration with analysts, production support, and ongoing improvement of stability, performance, and observability.You will design and implement...

United States Digital Space LLC is seeking a mid-level to senior IC to join our core engineering team. You will be responsible for implementing and maintaining our Java client library, and working alongside our core engineering team on the most performance-sensitive parts of our codebase.You will design, develop, and maintain high-performance server...

DescriptionJoin us and shape the future of risk technology with your expertise in data engineering and software development. You will have the opportunity to push boundaries, innovate, and make a meaningful impact on our business. We value diversity, inclusion, and respect, fostering a collaborative environment where your ideas matter. Experience career...

Runa is pioneering a first-of-its-kind payments rail that enables instant, global money movement at scale. As a Senior Software Engineer, you will architect, implement and deploy services end-to-end, delivering clean, scalable code that moves money reliably for thousands of users.You'll work with a modern event-driven stack on containerised cloud...

London Stock Exchange Group (LSEG) seeks a Senior Java Engineer with hands-on expertise in Java and Python to help build and operate the next generation FTSE Russell Index Platform. You will design, implement, and optimize AI-enabled features and large-scale index computations in a high-performance data environment.The role requires deep software engineering...

This position is no longer open for applicationsSalary: GBP81999 - GBP91110 per annumJOB TITLE: Senior Software EngineerLOCATION(S): LondonHOURS: Full-timeWORKING PATTERN: Our work style is hybrid, which involves spending at least two days per week currently, or 40% of our time, at our office location.About this opportunityWe're on a mission to build the...

London | Hybrid | Tier 1 Investment BankThe OpportunityWe are partnering with a Tier 1 investment bank on a major, multi-year Equity Accelerator programme focused on modernising its Prime Finance Equities platform. The programme is re-engineering core trading and post-trade systems, introducing new data and market-expansion platforms, and enabling advanced...

A leading global financial services firm based in Greater London is seeking a Senior Java Developer to deliver low-latency trading system components. The ideal candidate will have expertise in Java and experience with distributed systems, cloud environments like AWS, and trading flows. This role emphasizes collaboration across global teams and innovation in...

Maxwell Bond is recruiting a Senior Java Engineer for a fixed-term contract in London (Canary Wharf). You will design, build and operate backend services, APIs and cloud-native microservices on regulated financial platforms.The role demands strong Java/Kotlin expertise, hands-on AWS experience, and a collaborative, delivery-focused mindset. Immediate...

Wise is hiring a Senior Software Engineer II for Cash Management to help shape the global payments network. You will design and build scalable microservices in Java/Spring Boot, ensure reliability, and collaborate across Product, Solutions Engineering and Business Development.You will model complex financial domains with Domain-Driven Design, work with Kafka...

RE Partners is seeking a Senior Java Engineer to join a Deployment Security & Software Reliability team supporting a major financial institution. You will work hands-on with development teams to accelerate secure releases, modernize dependencies, and enhance software supply-chain security.The role emphasizes Java, CI/CD, containerization, and tooling to...

Xantura in the United Kingdom is seeking an experienced Senior Java Developer to join the engineering team and help design, build, and evolve our cloud-based data and analytics platform used by local authorities and public sector organisations across the UK.This hands-on senior role focuses on scalable backend systems, improving reliability and performance,...

Bounteous, a global AI Services firm, seeks a Senior Java Developer for a hybrid Glasgow role (3 days in office). Bring 4–12 years’ experience to design, build, and scale Java-based AI-enabled applications.You will work with Java 17, Kafka, Spring Boot, and AWS, interfacing with stakeholders to clarify requirements and deliver robust software in a...