senior java backend developer jobs in London

Job Description: Senior ASP.NET Developer We are looking for Full Stack Software Developer to work in our development team. The role involves participation in the full Lifecycle of software development (SDLC) from conception to deployment. This is an excellent opportunity for an individual who is passionate about software development and enjoys working in a...

Roles and Responsibilities Build and maintain high‑quality native Android applications using Kotlin and Jetpack Compose, focusing on fast delivery and maintainable architecture. Work closely with internal teams and client stakeholders to develop end‑to‑end mobile features that align with product goals and timelines. Contribute to architectural...

Anyone AI is recruiting skilled Python Developers to work on a project with a leading AI lab.Qualifications:Advanced professional written proficiency in English 3 7 years of professional software engineering experienceStrong proficiency in Python and JavaScript/TypeScript; working knowledge of Java, C#, or GoBackend or full stack development experience in...

Job title: Pre-Sales Senior EngineerLocation: London/Bristol - HybridSalary: 65,000 - 75,000Team: CommercialReporting To: Head of Client Solutions This role is based in London or Bristol and requires existing right to work in the UK. At this time, we are not able to offer visa sponsorship for this role. We are committed to building a diverse, global team...

LemFi (Series B) is building the go-to financial app for the Global South.Moving to a new country shouldn’t mean starting from zero. That's why our team of 400+ spanning 20+ countries is building a financial ecosystem that helps immigrants stay connected to home, build stability, and create wealth regardless of where they are from or where they live.What...

A leading financial services provider is seeking a Senior Java Developer to design and implement low-latency trading system components. This role requires deep expertise in Java, real-time systems, and distributed messaging technologies. The ideal candidate will be responsible for optimizing mission-critical trading services and collaborating with global...

Lead Site Reliability Engineer SRE Java - FinTechLead Site Reliability Engineer SRE Java - FinTechGet AI-powered advice on this job and more exclusive features.This range is provided by Client Server. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDirect message the job poster from Client...

Software Engineer / Developer - Voice ServicesFlint are currently seeking a Software Engineer/Developer to build, maintain, and optimize our client's next-generation communication platforms. You will bridge the gap between traditional telecommunication protocols and modern cloud-based AI. Your core focus will be developing stable SIP services using Java,...

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...

Tata Consultancy Services in London is seeking an experienced Java Engineer to develop backend services and scalable microservices in a hybrid work setup. You will work on projects leveraging Java, Spring Boot, Kafka, and cloud technologies to deliver secure, high-performing systems.The role involves building CI/CD pipelines, implementing REST APIs, and...

Job DescriptionSenior Software Developer – London - £45,000 DOEWhat we need is…We are looking for an experienced developer to be an essential part of our core platform team. You will be working predominantly on the technology that powers the entire business. All of our customer facing products are built on top of this platform and as such is not only...

Senior / Staff Backend Engineer | £120k - £140k + equity | LondonFinding somewhere to live should be exciting. The experience of actually finding it often isn't.Techmunity are exclusively hiring for a London startup that raised a £2M seed round to build a video-first property platform.Instead of searching through grids of listings and static photos, users...

Join It is a fast-growing B2B SaaS company helping organisations manage and grow their memberships. We support thousands of associations, clubs, and communities globally with software that simplifies recurring billing, member engagement, and day-to-day operations.We’re a lean, ambitious team with big growth goals, and we’re looking for an exceptional...

About AnthropicAnthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.About the...

C++ Developer / Backend Software Engineer London to £125k Are you a backend focussed C++ Developer with Front Office trading systems experience? You could be progressing your career in a senior, hands-on C++ Developer role at the Investment Management arm of a global bank. As a C++ Developer you'll focus on the redevelopment and customisation of a core...

Senior AI Engineer Description & Requirements For our Digital Innovation & Cloud Enablement program at our London office, we are looking for a: (Senior) AI Engineer Innovation & Technology @ Berenberg In an era where digitalisation and modern IT infrastructure is revolutionizing banking, we are shaping a technology-driven bank in which you as an IT...

Back End Developer London – Kings Cross £85,000 - £105,000 We're hiring Back-End Engineers to build the services Descrial runs on. Investment professionals need APIs and workflows that respect permissions, keep an audit trail and fail safely when an AI result can't be trusted. You’ll build multi-tenant data and workflow services, plus the integration...

About RadiantWe’re looking for a Senior Software Engineer with strong experience in Golang and Kubernetes to join our core product team. In this role, you'll design and build high-performance, cloud-native back-end systems and scalable APIs to support AI workloads, including LLMs and GPU-based services.We’re looking for a Senior Software Engineer with...

Your newpany You will be working for a well-known organisation working remotely with the occasion travel in the London office. This role is inside scope of IR35 and a 3–6-month contract with a possible extension. Your new roleOverview: We are seeking an experienced Full‑Stack Developer and Healthcare Technology Specialist to build a deterministic...

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...