senior java backend developer jobs in London

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 that matter. Look to join a team...

Citibank (Switzerland) AG in London/Global Tech is seeking a senior Java engineer to design and deliver high‑performance trading platform components. You will collaborate with Traders, Quants and PMs to translate business needs into scalable solutions for live markets.The role requires deep Java expertise, knowledge of low‑latency distributed systems,...

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...

Adecco Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in...

Have you got experience leading a team while remaining hands‑on and technically involved?Salary: up to £120k + bonusLocation: London office 3 days a weekWe are delighted to be continuing our longstanding partnership with an FX Market Disruptor FinTech that has been acquired by a leading capital market. They are looking for an experienced Java Developer...

Role Requirements: Hiring for a Senior Backend Engineer to support AI initiatives and fill a gap in the backend team. Looking for 5-15 years of experience, focusing on skills over specific technologies. Candidate Requirements: Must have strong Python skills, API experience, and production-level backend work. Nice to have: experience with Clickhouse,...

Our vision From blockbuster films and AAA games to immersive experiences, the demand for photo-real 3D content has never been higher - but creating photorealistic assets is slow, expensive, and manual with no current scalable solution available. At M-XR, our mission is to democratise the creation of high-quality 3D assets and empower brands, studios, and...

Are you passionate about building modern, scalable software solutions that make a meaningful impact?Do you enjoy collaborating across global teams, solving complex technical challenges, and using emerging technologies to drive innovation?About the BusinessLexisNexis® Risk Solutions provides customers with solutions and decision tools that combine public and...

The RoleAs a Senior Backend Engineer at Pynea, you will play a vital role in shaping and building our modern, collaborative, professional social network. Your mission is to leverage your expertise in backend development to design, develop, maintain and scale robust server-side solutions, ensuring seamless integration with our front-end systems. Collaborating...

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...

DescriptionSeedLegals is the leading provider of automated legal solutions for startups, with offices in London, New York and Paris. Since launching in 2016, we’ve supported over 75,000 startups who have collectively raised more than £2bn on our platform.We’re a Series A company backed by Index Ventures, on a mission to make entrepreneurship more...

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...

The Senior Java Developer is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities. Team Background The Derivatives Credit Risk Technology Team is...

About ARQARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journey, which means every person who joins shapes the future of our product, culture, and growth. If you’re excited by big challenges,...

DescriptionAbout Us: Solirius Reply, part of the Reply Group, is a technology consultancy and digital transformation partner that helps organisations solve complex challenges through strategy, design, engineering, and delivery.We work closely with our clients to deliver secure, accessible, user-focused services that evolve with their needs. By combining...

DescriptionAt 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...

Morson Edge (Financial Services) in London is seeking a Senior Java Developer to join the post-trade engineering team on a contract basis. You will design and develop market data and reference data feeds, building robust Java/SpringBoot microservices and REST APIs.The role focuses on auditing and leveraging market data, with exposure to CI/CD pipelines, TDD,...

Senior Backend Engineer Senior Backend Engineer (B2B SaaS) Competitive Salary + Company Benefits (c£60,000 to £80,000 per year DOE) Remote Working (UK/Ireland) The Opportunity: ISR Recruitment is working with a leading global software organisation to recruit an experienced Senior Backend Engineer to join its Product & Engineering team. This is a key...

Are you passionate about building modern, scalable software solutions that make a meaningful impact?Do you enjoy collaborating across global teams, solving complex technical challenges, and using emerging technologies to drive innovation?About the BusinessLexisNexis® Risk Solutions provides customers with solutions and decision tools that combine public and...

OverviewBGC Group Greater London, England, United KingdomJava Software EngineerBGC Group Greater London, England, United KingdomBuilt upon the foundation of cutting edge tech and exceptional talent, BGC Partners is a pioneering global brokerage and financial technology company servicing the financial markets. BGC is agile and dynamic in its approach,...