senior java developerin jobs in London

We are seeking an experienced Senior Test Automation Engineer to join the Information Intelligence Group (IIG) of CACI UK on live public sector projects. The role focuses on automated testing within a CI/CD lifecycle, leveraging Java, Selenium WebDriver and a range of open-source tools in AWS environments.You will work in Agile/DevOps teams to deliver robust...

Auxo Talent is seeking a Senior Java Developer for a 6-month contract in London. The role is Hybrid, requiring 2 days in the office per week. You will contribute to Java-based projects, focusing on scalable back-end services and customer-facing applications.The ideal candidate will have strong experience with Spring Boot, microservices, and distributed...

We are seeking aSenior Software Engineerto join theRisk Services team within GlobalMarkets.This role focuses on designing and buildingscalable, distributed systemsthat supportrisk data processing,analyticsandreporting workflows.The ideal candidate will have strong experience acrossJava and Python-based backend systems, with a solid understanding ofrisk data...

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...

HCL Technologies Limited is seeking a senior engineer to own end-to-end, complex distributed systems—from UI through databases and data pipelines. You will design, build, and operate cloud-native microservices in Java 17/21 with Spring Boot, exposing well-versioned APIs and consuming front-ends in TypeScript.This hands-on role requires daily coding, PR...

A global financial services organisation is seeking a Senior Java Engineer to contribute to a vital enterprise platform. This hands-on role involves not only development but also shaping technical standards and collaborating with senior engineers to enhance platform quality. Ideal candidates should have strong experience in Java backend development and the...

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...

JPMorgan Chase & Co. in London seeks agile technologists to join the Global Liquidity Technology team and revolutionize how technology supports the Global Liquidity business, managing large asset flows and delivering high‑scale, low‑latency systems used by traders and portfolio managers.The role requires strong Java expertise (17+), TDD/BDD, and...

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...

Falconsmartit in London is seeking a Senior Java Developer with Solace to join a hybrid team in permanent role. You will design, develop, and maintain Java applications using Spring Boot and Solace, integrate with internal and external systems, and implement RESTful APIs and microservices.The ideal candidate has 7+ years of experience, strong testing with...

A global financial services organisation is growing a senior Java engineering team to support a strategic, business-critical technology platform. This is a hands-on, senior level role suited to experienced engineers who enjoy working on complex systems while helping shape technical direction and engineering standards.What we’re looking forStrong Java...

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...

Adaptive, a technology provider for capital markets, seeks a Senior Java / Systems Engineer with Platform Exchange experience to design, deliver, and optimise high-performance, low-latency software using Aeron for production readiness.You will design, build and optimise Java services across the delivery lifecycle, define models and exchange boundaries, and...

Lorien is seeking a Java Developer in London to join the Back Office Change function on a 12-month contract. The role focuses on an AWS cloud migration and modernising a range of middle and back-office systems, including reference data and FIS platforms.You will work with database and reporting teams and collaborate downstream with Front Office on changes...

Grid Dynamics is partnering with JUXT on a Tier 1 investment bank project to build a next-generation FX Risk Platform. You will join a team delivering FX Options end-of-day Official Valuation capabilities using Java, Kotlin and Apache Flink.You will own the development lifecycle from requirements to production, collaborating with the bank's engineers,...

FDJ UNITED is seeking a Senior Quant Model Engineer to lead on building, optimising and deploying production-grade services for a cutting-edge sportsbook platform. You will work within the Pricing Engineering team, focusing on low-latency microservices, robust APIs, and scalable data products.The role emphasizes hands-on technical delivery, architectural...

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...

Fasanara Capital is hiring an experienced Java Software Engineer to join Fasanara Digital and take ownership of systems powering 24/7 trading activity. You will develop and maintain a collateral management platform, reference data, and accounting infrastructure for both digital assets and traditional markets.You will work on hands-on development across new...

Scrumconnect Consulting in London is seeking an experienced Backend Developer to design, build, and maintain scalable, secure server-side services and APIs, while advancing Agentic AI capabilities within our engineering platform. The role sits at SFIA Level 4, working under general direction with some autonomy and mentoring of junior engineers.Our projects...

Selby Jennings is seeking an experienced Operations Technology professional to join the team building and supporting the firm’s Profit & Loss (PnL) platform and Price Master systems in a fast-paced investment management environment.The role requires strong Java engineering experience, data integrity skills, and the ability to collaborate with trading, risk...