senior java backend developer jobs in London

Join us as a Software Engineer, Backend This is an opportunity for a technically minded individual to join us as a Software Engineer You’ll be designing, producing, testing and implementing working software, working across the lifecycle of the system Hone your existing software engineering skills and advance your career in this critical role What...

Our vision is to give everyone the belief they can make their move. We aim to make moving simpler, by giving everyone the best place to turn to and return to for access to the tools, expertise, trust, and belief to make it happen. We’re home to the UK’s largest choice of properties and are the go-to destination for millions of people planning their next...

JPMorgan Chase & Co. in London is seeking a Senior Lead Software Engineer to join the Platform team as a hands-on Backend engineer. You will build a Spring Boot-based framework and robust libraries to support product engineering teams across the Investments ecosystem.The role blends deep Java/Spring expertise with strong problem-solving, design skills, and a...

Zühlke Engineering Vietnam LLC. is seeking a Senior Fullstack Developer to join a high-performing engineering squad in London or Manchester.You will work on backend-led services using Kotlin or Java 17+, building APIs and event-driven flows, and contribute to modern web interfaces with React and TypeScript. The role emphasizes AI-augmented engineering and...

Project descriptionJoin the Equity Accelerator programme, a strategic multi-year transformation initiative focused on modernizing Prime Finance Equities platforms. The role involves developing and enhancing institutional-grade trading and post-trade systems using cloud-native, event-driven architectures while delivering advanced client-facing features....

At Expedia Group, we help travelers explore the world, one journey at a time. As a global travel company powered by passionate people, trusted partnerships, and leading technology, we connect travelers, partners, and advertisers through our consumer brands, B2B network, and travel advertising business.Here, you'll do meaningful work that helps millions of...

Senior Java Software Engineer – FX Options Risk (VP)This position is responsible for designing, developing, and optimizing our mission-critical, high-throughput FX real-time risk system. As a Senior Software Engineer, you will leverage your deep technical expertise to drive the architectural evolution of low-latency processing systems, solve complex...

Associate Director @ Opus Recruitment Solutions | Shaping the Future of Tech firms across UK (JVM - Java, Scala & Kotlin) 🚀 Senior Full Stack Developer – Java & React Build Products That Shape High‑Stakes Decision‑Making I have partnered up with a fast‑growing tech firm who are building AI powered tools used by Fortune 500 business leaders. They...

Company DescriptionAt ANDigital there’s a buzz. It’s the buzz of brilliant, curious people set free to imagine the impossible. A hubbub of ‘what ifs?’, ‘why nots?’ and ‘let’s trys’ all working together to push boundaries and create the future of digital.Job DescriptionANDigital is a new way for digital delivery.We are growing fast and...

EC1 Partners is seeking a backend engineer in London to build and enhance electronic trading systems. You’ll develop Java-based backend services that support high-volume trading, collaborating with product and trading stakeholders.The role emphasizes performance, scalability, and reliability, with responsibility for production support and system design...

A World-Changing Company Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role Backend Software Engineers at Palantir build...

Backend Developer – Java/Spring Boot Start Date: ASAP Contract | Outside IR35 | £475 per Day Duration: Until the End of March Location: Fully Remote We’re partnering with a fast-paced, technology-led organisation to appoint an experienced Backend Developer on a fully remote contract. This is an excellent opportunity for a hands-on developer with strong...

At Engine by Starling , we are on a mission to find and work with leading banks all around the world who have the ambition to build rapid growth businesses, on our technology. Engine is Starling's software-as-a-service (SaaS) business, the technology that was built to power Starling, and two years ago we split out as a separate business. Starling has seen...

Role Overview This position provides high-level technical leadership and architectural expertise to the enterprise systems team. Operating as a principal individual contributor, you will oversee platform architecture, lead complex integration projects, maintain code quality standards, and mentor mid-level engineering staff. This position focuses purely on...

Stanford Black Limited in London is seeking a Backend Developer to join as a Founding Engineer, delivering a greenfield platform with Java and Kotlin. You will own core architecture, lead design decisions, and drive the project from the ground up.You will design scalable backend systems, ensure high availability, and work on distributed architectures with...

Description At The Multiplayer Group (MPG), we create world-class multiplayer experiences through Co-Dev and Full-Dev partnerships. Our people-first culture supports a diverse, global team in a welcoming and flexible work environment. With teams spread worldwide, we prioritise connection—both online and in person. Giving back is central to who we are, with...

Game Logic Server DeveloperWe are looking to hire a Game Logic Server Developer to join our talented team. You will be a key player in bringing our industry-leading online slot games to life - taking a game concept and building it into a fully working game on our Java code base, and owning that product all the way through to release.Working closely with...

About 9fin9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion.Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis,...

Spotify is seeking a Senior Backend Engineer to join the Subscriptions Mission in London or Stockholm. You will architect, develop and operate Java services that enable cohesive conversion and upsell journeys across our merchandising platform, collaborating with R&D, Marketing and Growth to deliver scalable backend systems on Google Cloud Platform.You bring...

Salary: Competitive, dependent on experienceWorking Pattern: Monday to Friday, hybrid working with three days per week in our London officeAbout UsPraetorian Connections Ltd (PCL) is a leading provider of language-enabled Open Source Intelligence (OSINT), supporting geopolitical, security, and risk-focused decision making. We deliver high-quality OSINT...