senior java software engineer jobs in London

Location: Remote / HybridCompany: MAXTRAMAXEmployment Type: Full-TimeAbout MAXTRAMAXMAXTRAMAX delivers innovative technology solutions that help organizations improve efficiency, security, and operational performance. Our expertise spans Artificial Intelligence, Software Development, Digital Transformation, Network Infrastructure, Cybersecurity, and Defense...

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...

Global Payments Inc. is seeking a Senior Software Engineer – Agentic Commerce to join our global engineering team in London. You will help build secure, real-time payment infrastructure and AI agent integrations that enable merchants, payment platforms, and risk systems to operate together efficiently.The role emphasizes ownership of backend services,...

Duffel in London is hiring a Senior Software Engineer to shape the product and the team building it. This hands-on role focuses on building a world-class API for travel, collaborating across squads, and shipping scalable software in a hybrid setup near Shoreditch.You'll design systems, mentor teammates, and balance technical ambition with business impact. We...

Wise is expanding its Latam & Mea Payments Team and is looking for ambitious Senior Software Engineers to join the engineering team.You will lead integrations with local banks and payment providers, connect to regional payment systems, and optimize cross-border money movement within your area. This role emphasizes high-quality, scalable, and compliant...

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...

Join us to shape the future of agentic commerce and machine learning at a global scale. You’ll have the opportunity to set technical direction, influence engineering culture, and deliver impactful solutions that power secure transactions for buyers and suppliers worldwide. We value creativity, collaboration, and a passion for building technology that makes...

Join us to shape the future of agentic commerce and machine learning at a global scale. You’ll have the opportunity to set technical direction, influence engineering culture, and deliver impactful solutions that power secure transactions for buyers and suppliers worldwide. We value creativity, collaboration, and a passion for building technology that makes...

Humanoid is building the world’s most capable humanoid robots and is seeking a Senior Platform Software Engineer to develop the core OS, data networks and protocols for our next‑generation platform. You will write high‑integrity, embedded software that integrates sensors, safety systems and computing platforms for safe human‑robot collaboration.You...

Millennium is seeking a Software Engineer – Equity Derivatives Pricing & Risk to design, develop and implement robust risk systems supporting Equity Volatility trading strategies with a focus on Java and Spring Boot server-side applications.You will build exotic pricing models, provide Level 3 production support, and contribute to testing, performance...

Senior Software Engineer, Agentic Harness Quality and PerformanceLondonGood Systems is the parent company behind Goodnotes, where millions of people capture and develop their ideas.Goodnotes is where we started, and it's now the foundation for a growing family of products. By reimagining how we interact with information, we're bringing together human...

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...

Marsh in the United Kingdom is seeking an experienced Senior Software Engineer to help design, develop and support scalable applications. This hands-on role demands independence, strong Angular and TypeScript/JavaScript skills, and interest in applying AI to improve software delivery and business outcomes.The role is hybrid, requiring three days per week in...

Perk seeks a Senior Software Engineer who embraces ownership of the full feature lifecycle—from discovery with product to deployment and impact measurement. You will drive architectural decisions, set technical standards, and lead cross-functional squads in a fast-paced, AI-enabled environment.You’ll shape the roadmap, mentor peers, and raise overall...

SENIOR MACHINE LEARNING ENGINEERUK | Hybrid / RemoteWe’re looking for a Senior Machine Learning Engineer to join a growing AI team, developing and deploying cutting-edge AI solutions for clients across sectors including government, finance, retail, energy, life sciences and defence.You’ll take a hands-on role designing, building and deploying scalable,...

Elsevier is hiring a Software Engineer for the NPRE team, based in Oxford or London. You will design, develop, and deploy cloud-hosted applications, collaborating with researchers, editors and developers across the peer review journey.We value experience with Java/Spring Boot, JavaScript/TypeScript, Docker, Kubernetes and AWS, plus CI/CD, Agile practices and...

Civica UK Ltd is hiring a Senior Software Engineer to transform complex business problems into robust, scalable software. You will work across legacy modernization and greenfield projects, embedded in product teams, delivering production-ready systems that affect public services.You will apply architectural reasoning, collaborate with product and design...

Company Description 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...

About the roleWe’re a new team operating with startup urgency to create new customer growth. Expect end‑to‑end ownership—rapid experimentation, fast shipping, and leaning in wherever the work takes you, beyond your job title. If you’re ambitious, hard‑working, and excited to build 0→1 against tall ambitions, you’ll thrive here.As our SDEIII...

About Portal Biotech Portal Biotech has built the world's only platform capable of sequencing full-length proteins at the single-molecule level. Using our nanopore technology, we read intact proteins of any size, capturing both sequence and post-translational modifications in a way no other system can. This opens up entirely new ways to understand protein...