senior java backend developer jobs in London

Affirm is seeking a senior backend engineer to design, develop, and launch scalable backend systems in a remote-first environment in the United Kingdom. You will own end-to-end delivery, drive architectural decisions, and collaborate with global teams across product, design, and analytics to weigh risks and trade-offs while improving reliability and...

Company description Publicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and Zenith, as well as global accelerator PMX; immersive experience group PMCI and access to integrated platform-based technologies and offerings from CJ, Epsilon and...

Job Title: CA Engineer (Java Skills / Tech Lead)Location: London - HybridContract: 6 months, with possibility of extensionClearance: SC Cleared or eligible to obtain SC clearanceWe are currently recruiting for an experienced CA Engineer / Java Technical Lead to support a major technology programme based in London.The successful candidate will provide strong...

FRESH has partnered with a fast-growing, SaaS company who are looking for a Senior PHP Engineer to join its engineering team at an exciting stage of growth. The business builds modern, cloud-based software used by enterprise clients across the global hospitality, spa, and wellness industry.If you are considering sending an application, make sure to hit the...

London (Hybrid – 1 day per month in the office) Basic salary £80k to £95k + strong package An exciting opportunity for a Senior Backend Developer to join a fast-growing, well-funded technology business that’s scaling rapidly and investing heavily in its engineering teams. This is a role for someone who enjoys building reliable, well-designed backend...

Please note this is a permanent role and we prefer a hybrid working model; we are flexible with remote working as long as you can meet with the team in our London studio in-person now and then. Please note we cannot support VISA + relocation for this role. At Framestore’s Oscar-winning Technology team, innovation is at the heart of what we do, whether this...

Wise is a global technology company, building the best way to move and manage the world’s money.Min fees. Max ease. Full speed. Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money. As part of our team, you...

About the Role We are looking for a Senior Software Engineer-Platform Services to drive our core platform ecosystem. In this role, you will drive technical excellence across dual-stack (Node.js/TypeScript and Java/Kotlin) distributed systems. Job Role• Own and operate platform services that include customer and developer portals and centralised document...

About AlphaSense:  The world’s most sophisticated companies rely on AlphaSense to remove uncertainty from decision-making. With market intelligence and search built on proven AI, AlphaSense delivers insights that matter from content you can trust. Our universe of public and private content includes equity research, company filings, event transcripts,...

Principal Software Engineer Salary to £80k, poss higher for their ‘Unicorn' candidate Role can be based remotely, as long as you can occasionally travel to London for client work (travel expenses paid)- approx. once a month. NB: Please only apply if you are a UK National, have resided in the UK for the past 5 years and are prepared to go through UK SC...

Blockchain / DLT Developer London - Hybrid / Remote Permanent £90,000 - £110,000 We are looking for an experiencedBlockchain / DLT Developerto join a growing technology team delivering innovative blockchain solutions within the financial services sector. You will design, build and deploydistributed ledger and smart contract solutions , working...

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...

Note: This position does not offer any Visa sponsorship. We are only looking for applicants who are either local to London, UK, or ready to relocate to the employer's location. Note: Please share your resume in English only. Job Summary: Our Client is looking for a creative and skilled Mobile Application Developer to join their team. You will be...

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 a focus on local communities, education, and sustainability. We are looking for a talented, fully remote Software Engineer. You ll be...

Senior Backend Engineer (Go) London 1-2x p/w (remote UK applications considered) £85-100k plus equity Futureheads are working with a fast-growing global art marketplace making contemporary art more accessible through exclusive limited-edition works from leading artists, with a community of 3.3m+ collectors and fans across 100+ countries. They're looking for...

SR2 | Socially Responsible Recruitment | Certified B Corporation™ is seeking a Senior Backend Engineer in London to design and build robust backend systems using Python. You will work with a high-calibre startup developing an agentic AI product, focusing on infrastructure and tooling. Responsibilities include developing backend services, integrating...

Starling Bank is seeking a Senior Java Developer to optimize real-time banking ledger processing microservices. The role is fully remote within the UK, offering milestone-based compensation and GDPR-compliant operations.The candidate will work primarily with Java, Spring Boot, PostgreSQL, and Docker in a backend-focused environment, contributing to...

  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...

The Opportunity JUXT is partnering with a Tier 1 investment bank on a strategic initiative to build its next-generation FX Risk Platform. The programme is consolidating risk management capabilities into a modern, scalable architecture while decommissioning multiple legacy risk applications. We are looking for a Senior Kotlin / Java Engineer to join the team...

Be an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products. As a Senior Lead Software Engineer at JPMorganChase within the Global Sales OMS technology group working in EMEA with a focus on our NAMR operations, you are an integral part of an agile team that works to enhance, build,...