senior java software engineer jobs in London

A leading financial institution in London is seeking a Senior Java Developer for a 10-month onsite contract. The role involves designing, building, and maintaining Java-based backend systems, with a focus on cloud-native and microservices architectures. The ideal candidate has hands-on experience with Java, cloud technologies, and mentoring skills....

A leading health retailer in London is seeking a Senior Backend Engineer to develop tools that enhance store design and optimize customer experiences. The role involves designing scalable backend services using Java and Spring within a hybrid working environment. Strong experience in backend development, API management, and databases is essential. This...

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...

RE Partners in London seeks an experienced and opinionated Java Developer to join the high-performing engineering team, building low-latency, high-throughput payments systems.You will design scalable real-time services using Core Java, Spring Boot, and RESTful APIs, while mentoring engineers and shaping architecture.This hybrid UK role offers opportunities...

IG, a FTSE100 fintech, seeks a Senior Software Engineer to push AI across Lifecycle engineering with a primary focus on the Java backend. You will build tooling for AI-assisted coding, testing and deployments and integrate with Jira, Confluence, and the CI/CD pipeline.The role emphasizes test-driven development, ownership from design to production, and...

Pontoon is hiring a Senior Full Stack Developer (Front End - Java / Angular / Solidity) for a London-based engineering team. This 12-month contract role is onsite five days a week, offering a salary of £50,000–£80,000 per year plus competitive terms.You will design and build scalable enterprise applications, deliver secure backend services in Java/Spring...

Sanderson is seeking a Senior Backend Developer to build and maintain cloud-based services on AWS, using Java 21 and Spring Boot in a hands-on, delivery-focused role. The work involves code reviews and input into technical decisions.Responsibilities include building REST and event-driven microservices, deploying on AWS (ECS/EKS, Lambda, RDS, DynamoDB,...

Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions. **Role Overview** TP ICAP are looking for a Senior Java Developer delivering low‑latency, highly available trading system components with deep expertise in...

A leading B2B SaaS technology company in London is seeking a Senior Java Engineer with expertise in Spring Boot and cloud-based systems. You'll design and scale products, mentor colleagues, and contribute to technical initiatives. The role offers a salary of up to £110,000 plus bonuses and excellent pension benefits. Join a collaborative environment where...

Avanti Recruitment Limited is seeking a Senior Java Fullstack Engineer to join a renowned software company in Central London. The role is hybrid, with 2 days in the office weekly, and a salary up to £75,000 depending on experience.You will design, develop and enhance enterprise scale software, working across backend Java/Spring Boot and frontend...

Oliver Bernard is seeking a Senior Java Developer to join a high-performing engineering team delivering a major financial services project in London.This is a hands-on role focused on clean, maintainable code, automated testing and continuous delivery in an Agile environment. You’ll work alongside experienced engineers, architects and product specialists...

Hunter Bond is seeking a Senior Java Developer for a hybrid Central London role with an initial 12-month contract. The position offers an outside IR35 setup and a day rate up to £700, starting in October.You will develop and enhance server-side Java applications supporting settlement and post-trade processes within a fast-paced financial markets...

Job Description: Job Title Senior Java Engineer – Fixed Income Pricing and Analytics Location London Corporate Title Vice President You will play a key role in transforming the Rates and Credit Fixed Income technology landscape. As part of a multi-year modernisation programme, you'll help build a next-generation pricing and analytics platform. Traders...

Citigroup in London is seeking a Senior Low Latency Java Engineer to lead Java-based, low-latency systems within the High Performance Architectures (HPA) team. You will work on algorithmic trading utilities, market data handling, and event-sourcing microservices while mentoring junior engineers and driving performance improvements.The role focuses on...

GlobalLogic выступает цифровым инженерным партнёром мировых компаний, помогая создавать цифровые продукты и улучшать бизнес через интеллектуальные продукты, платформы и сервисы.Команда ищет...

J.P. Morgan is seeking a Senior Lead Software Engineer to join the Platform team in London. You will be a hands-on backend engineer focusing on a Spring Boot based framework and libraries that support Investments' product engineering teams.You will bring deep Java expertise, work with SDLC and Infrastructure teams, and drive standardisation and best...

A boutique hedge fund is building one of the most sophisticated systematic trading systems in the market. I am hiring engineers who want to sit at the intersection of Java, FIX, execution workflows, and real PnL. You’ll be directly shaping the systems that route orders, connect brokers, and analyse cross-asset trading execution. What you’ll do: Own the...

Thomson Keene's client, a Global Investment bank, is delivering a new centrally automated platform for its Prime technology division. You will join a globally distributed team and contribute to building scalable, event-driven services using Java, Spring and Apache tooling.The stack includes Java, Spring, Flink, Kafka, Ignite and Angular. The role requires...

JPMorganChase is seeking a Software Engineer III in London to own end-to-end delivery of secure, full stack features using Java, Spring, and microservices. You will work with Kafka/event-driven patterns, CI/CD pipelines, and robust testing to improve performance and resiliency.You will mentor teammates, participate in architecture reviews, and help shape...

How often do you get the opportunity to join a major organisation and build something genuinely greenfield from the ground up? The Company Pulse Group are exclusively partnering with one of the UK’s largest and most recognised retail organisations as they build a brand-new engineering capability within their Customer Fulfilment technology...