java developer jobs in London

FX Risk Lead Java Developer + AI (VP)Engineer the future of global finance. At Citi, our Tech team doesn't just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems...

Denizns Ltd in London is seeking an experienced Java Developer with active SC clearance to design, build and maintain RESTful and SOAP microservices using Spring Boot in an Agile environment.You will join a dynamic team to develop scalable Java applications, work across functional groups, and ensure code quality with SOLID principles, TDD/BDD tests, and...

Low-Latency Engineer (Java/C++) | London, 3 days onsite | Up to £600/day Inside IR35 | 12-month contract I'm working with a global technology consultancy delivering into a tier-1 investment bank's ultra-low-latency trading platform. They need three engineers to help build the Real Time market data backbone that feeds their trading desks, where microseconds...

Citigroup is seeking a VP-level Lead Java Developer to architect and deliver AI-enhanced, real-time FX risk software for global markets. You will drive end-to-end delivery, shape technical direction, and work with quantitative analysts and traders to translate complex requirements into robust code.The role emphasizes high-performance, low-latency Java...

Job Description - Java Low Latency/Full Stack Engineer (Core Java & C++) **Location:** London, UK **Working Model:** Hybrid - 3 days onsite per week **Experience:** 5-10 years **Industry:** Financial Services/Investment Banking/Trading Technology About the Role We are looking for an experienced **Java Low Latency/Full Stack Engineer** with strong...

Description We’re looking for someone to join our high performance engineering team building our new real time banking platform. You’ll bring strong experience of working with Continuous Deployment practices in production environments. You’ll have experience building and operating cloud native services using technologies such as Spring Boot, with...

Role : Java Developer (Blockchain)Type : ContractLocation : London, UK (Hybrid)Roles and ResponsibilitiesBackend EngineeringDesign and develop enterprise-grade backend services using Java.Build APIs and microservices supporting digital asset products.Develop scalable and resilient systems aligned with banking standards.Ensure high availability, security,...

**Description** We’re looking for someone to join our high performance engineering team building our new real time banking platform. You’ll bring strong experience of working with Continuous Deployment practices in production environments. You’ll have experience building and operating cloud native services using technologies such as Spring Boot,...

About the role Join the team behind Price Service—a mission-critical HTTP API powering pricing and promotions across all of Tesco’s channels. From tills to websites and everything in between, our work touches the lives of over 28 million UK shoppers every week, with global reach on the horizon. We’re building a robust, internet-facing API that runs...

About FasanaraFounded in 2011, Fasanara is a global asset manager and technology platform.We manage c. USD 6 billion AUM (as of December 31, 2025) in Fintech strategies on behalf of pension funds and insurance companies in Europe and North America.With c.110 employees globally, we are a pioneer investor in Fintech Lending, enabling Real Economy...

**Must-Have Skills** • Angular 10 + • node.js • npm • Ag-Grid • Java • Spring Boot • SQL Server **Nice To Have** • Microservices • Docker • Kubernetes • Jenkins • Kafka • WPF.NET (xaml) • C# Key Responsibilities - Design, develop, and maintain responsive web applications using Angular. - Build and enhance backend...

FX Risk Lead Java Developer + AI (VP)Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build...

**About the role** Join the team behind **Price Service** —a mission-critical HTTP API powering pricing and promotions across all of Tesco’s channels. From tills to websites and everything in between, our work touches the lives of over **28 million UK shoppers every week** , with global reach on the horizon. We’re building a robust, ...

Referment is working with a London-based technology company that builds data transparency and accountability tools for the investment management industry. Its platform aggregates and validates cost and holdings data from across the investment supply chain, allowing pension funds, asset managers and other service providers to share and interrogate validated...

DescriptionWe are searching for world-class technologists to join our team building solutions for the J.P. Morgan Macro e-trading platform, which streams real-time prices and executes client trades across FX, Rates, Commodities, Credit and ETFs. As a Software Engineer III at JPMorganChase within the Macro e-trading platform team, you serve as a seasoned...

Role : Java Developer (Blockchain)Type : ContractLocation : London, UK (Hybrid)Roles and ResponsibilitiesBackend EngineeringDesign and develop enterprise-grade backend services using Java.Build APIs and microservices supporting digital asset products.Develop scalable and resilient systems aligned with banking standards.Ensure high availability, security,...

We are searching for world-class technologists to join our team building solutions for the J.P. Morgan Macro e-trading platform, which streams real-time prices and executes client trades across FX, Rates, Commodities, Credit and ETFs. As a Software Engineer III at JPMorganChase within the Macro e-trading platform team, you serve as a seasoned member of an...

## Lead Java Developer (VP)Applyremote type: Hybridlocations: London United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: 26966780**Discover your future at Citi**Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll...

Java Developer | Remote | Inside IR35SR2 is recruiting a Java Developer to build and improve backend software within an established engineering team. We're looking for someone whose recent experience centres on writing, testing and delivering Java code, with strong knowledge of Spring Boot and a disciplined approach to software quality.The RoleYou'll turn...

Develop and maintain transaction-related backend services using Java and Spring Boot. Build core business processes for order and transaction workflows.Ensure data consistency, system reliability, and correctness across critical business processes.Support stable operation of transaction systems under high concurrency.Participate in requirement discussions,...