senior java software engineer jobs in London

Trayport is seeking a Senior Software Developer in London to join the Joule Direct team, focusing on reliability and high-throughput, low-latency energy trading systems. You will work with software, QA and DevOps engineers to drive systemic improvements and support large-scale services.Responsibilities include implementing features, improving observability,...

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview About the Team The Enterprise AI Products team is a...

About Wise & Wise Platform Wise is a global technology company building the best way to move and manage the world’s money: min fees, max ease, full speed. With over 13 million customers and growing fast, we are building an entirely new network for the world's money. Wise Platform enables banks, software companies, and large enterprises to leverage Wise's...

Faculty AI is seeking a Senior Software Engineer for its Defence team in the UK. You will lead backend and edge/IoT development, bridging ML research and production-grade software while mentoring peers in a fast-paced environment.Expect to work 2–4 days on-site with defence clients, with London-based or UK-wide flexibility when not on-site. You will ship...

Senior Software Engineer C# .Net - relocate to Newcastle!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 ServerSenior Software Engineer / Developer (C# .Net) *Newcastle onsite* to £130k+Are you a Senior...

Google Cloud seeks a Senior Software Engineer for TorchTPU in London. You will lead AI framework work, optimize PyTorch on TPUs/GPUs, and collaborate across teams on large-scale ML systems.You will design and implement performance-focused software, mentor engineers, and drive projects from inception to delivery in a fast-paced environment. In-person...

Scope AI in London is seeking a Senior Software Engineer to own problems end to end, talking to users, designing the solution, shipping it and evaluating outcomes. You will work five days a week in our sunny office in Farringdon, helping invent what inspection software should look like in a post AI world.You should be deeply technical, excited by building...

Trayport seeks Senior Software Engineers to join the Joule Direct team, building a high-throughput, low-latency energy trading platform. You will collaborate with Product Managers, Testers and DevOps to deliver reliable, scalable systems and drive improvements across the stack.You will mentor engineers, design complex features, improve observability, and...

Runna is hiring for a talented engineer to join the Train Team in London. You’ll work across frontend and backend, collaborating with modelling/AI teams to integrate features into Runna’s training platform for runners.The role focuses on building scalable, end-to-end experiences in a fast-paced environment. You’ll partner with founders and leadership,...

Addition is seeking a senior technical leader to shape architecture, lead delivery teams and translate complex Defence challenges into robust, production-grade systems. You’ll own the technical direction across software, data and AI projects, drive architectural decisions, mentor engineers and engage with senior stakeholders.The role is predominantly...

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 Data Platforms team in the Chief Data & Analytics Office, you are an integral part of an agile team that works to enhance, build, and deliver trusted...

The AI Security Institute is seeking a senior engineer to design and build reliable systems enabling researchers to run experiments and ship results quickly. You will work on LLM-based agent systems, evaluation frameworks, and supporting infrastructure in a highly interdisciplinary team.You will own major technical projects, contribute to architectural...

Global Payments Inc. is seeking an experienced Senior ML Software Engineer to join our ML team, focusing on production-ready ML services and platform capabilities. You will own backend services, APIs, and the end-to-end lifecycle of high‑profile products in production.You’ll collaborate with ML researchers, product managers, and platform engineers to...

We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase within the Equity Derivatives Group you will join our agile team creating, transforming, and supporting our trusted market-leading technology products using modern technologies and industry best...

Intelligent Steps in City of London is seeking a Senior Java Developer to design and deliver a microservices-based platform. You will own backend services, influence architecture decisions and work with product, QA and DevOps to translate business requirements into reliable software.The role focuses on Java 21 and Spring Boot, REST APIs, Kafka, PostgreSQL...

Job Title Senior Software Engineer - (Java/AI) Brokerage Services Job Description So, who are we? IG has been at the centre of retail trading and investment since 1974, when we helped create the market for financial spread betting. Today, we’re a FTSE100 fintech operating across five continents, serving over 700,000 clients and handling billions in...

Starling Bank, the UK's leading digital bank, is seeking engineers with 3–4 years of Java experience to join the Getting Paid & Open Banking team. You will build and maintain capabilities enabling businesses to collect payments and connect with third-party providers.Work in a hybrid model with offices in London and other hubs, contributing to Open Banking...

Join Red BadgerWe recognise our people are the best thing about Red Badger and that a truly diverse workplace where people are free to be themselves is essential for great culture and great outcomes. If you like solving difficult problems, working with great people and making a real impact, join us and become a Badger.At Red Badger, our purpose is to make a...

Cloudflare is hiring engineers of all experience levels to work on networking and edge services. You’ll contribute to anycast BGP, flow and log analytics, and a Linux-based dataplane, delivering features that scale across our vast edge network.Collaborate with engineers and product managers to solve tough problems for customers worldwide, and join a...

JPMorgan Chase is seeking a Sr Lead Software Engineer, Electronic Trading Application Developer to build a flagship next-generation trading application spanning pricing, execution, and risk management.You will design and implement software for a global electronic trading platform, collaborating with partners across product and analytics to translate...