staff java backend developer jobs in London

P-1127At Databricks, we are obsessed with enabling data teams to solve the world's toughest problems, from security threat detection to cancer drug development. We do this by building and running the world's best data and AI infrastructure platform, so our customers can focus on the high value challenges that are central to their own missions.Our engineering...

We help companies get compensation right. What we get paid at work has a massive impact on our lives, and it’s one of the biggest factors in hiring and retaining talent - and yet so many companies struggle to get it right. They simply have no choice but to rely on poor data and unsophisticated tools for their pay decisions. That’s why we created...

A rapidly scaling fintech startup in London is seeking a Staff Back-end Engineer to develop and optimize backend systems for cross-border transactions. This role involves guiding architectural direction, mentoring team members, and working with technologies such as GoLang and PostgreSQL. Ideal candidates should have over 7 years of experience in backend...

About the role We’re looking for a Backend Engineer who specialises in Golang to help build and scale the core services that power Hyperlayer’s orchestration engine. You’ll be working on high-throughput, mission-critical systems that sit at the heart of how our financial institution clients design, launch and manage Smart Accounts — so performance,...

About us    Founded in 2017, Wayve is the leading developer of Embodied AI technology.  Our advanced AI software and foundation models enable vehicles to perceive, understand, and navigate any complex environment, enhancing the usability and safety of automated driving systems. Our vision is to create autonomy that propels the world forward.  Our...

About UsFanatics is building a leading global digital sports platform. We ignite the passions of global sports fans and maximize the presence and reach for our hundreds of sports partners globally by offering products and services across Fanatics Commerce, Fanatics Collectibles, and Fanatics Betting & Gaming, allowing sports fans to Buy, Collect, and Bet....

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to...

All the detailsAs part of the M&S Software Engineering team, you’ll be joining a well-loved British brand at an exciting stage of its transformation into a digital-first, engineering-led organisation. Our technology powers experiences for millions of customers and thousands of colleagues, with engineering excellence at the heart of our success.All the...

About Methods: Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create...

Lead technical decision-making and architecture design for JD’s international core systems, ensuring high standards of performance, availability, concurrency, security, and scalability.Design and oversee complex system architectures and drive productization efforts, maintaining architectural quality through hands-on coding, continuous performance...

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success.Why Join Us?To shape the future of travel, people must come first. Guided by our...

Job Type: Permanent (Hybrid – 2 Days Office and 3 Days work from Home) Location: London, United Kingdom Number of hours: 40 hours per week – full time Ready to utilize your experience and expertise in Java Engineer? We have an exciting role for you - Java Engineer! Careers at TCS: It means more TCS is a purpose-led transformation company, built on...

Brown & Brown Europe are looking for a frontend developer to work on our insurance platform, an end-to-end system that takes an insurance risk from submission to pricing, to policy issuance and beyond. You will be part of a small but growing team, so there will be plenty of opportunity to make a big impact. The role will require you to work primarily on...

About Us:Based in San Francisco, California, Turing is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems. Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who...

ARQ is building a next-generation fintech platform in London, seeking a Senior Backend Engineer. You will design, develop, and maintain scalable backend systems using Java, Spring Boot, and microservices, collaborating with a world-class team to deliver secure, fast financial services.You’ll work on greenfield projects and evolve critical systems such as...

BNY is seeking a Senior Associate, Full-Stack Engineer in London. In this role, you will design and maintain backend services while collaborating on frontend development. Key responsibilities include delivering secure, scalable systems and contributing to performance enhancements.Required qualifications include proficiency in Java, knowledge of...

Senior Staff Software Engineer, Time EngineeringGusto 08 August 2025Join Gusto as a Senior Staff Software Engineer (Backend) on the Time engineering team and help shape the future of time management for businesses. You'll design, build, and scale high-performance APIs that power time tracking and payroll integrations, impacting millions of...

# Senior Backend Platform Engineer – EdTech (Learning Systems & Integrations),February 15, 2026### Job Description**Location:** London, UK **Work Model:** On-site **Role Type:** Full-TimeWe are looking for a **Senior Backend Platform Engineer** with strong experience in scalable backend systems and API architecture to join our client’s on-site team in...

🚀 Mobile Developer – Fully Remote | Up to £105k | React Native, Swift, Kotlin Here at Venchr, we are seeking a Mobile Developer with strong expertise in React Native to build high-quality, cross-platform applications that deliver a seamless experience on both iOS and Android. You’ll be contributing to innovative solutions that support the luxury...

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to...