senior java software engineer jobs in London

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,...

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...

Catapult is seeking a Senior Software Engineer in London (hybrid) to advance the Perch camera system. You will write Python/C++ across devices and services, improving how we collect and analyze performance data at scale for real sports teams.You’ll work on 3D tracking, ML model deployment, and low-latency processing, collaborating with embedded, data, and...

TradingHub Group in London is seeking a Senior Software Engineer to join our Structured Data team and help drive the evolution of a platform that sits at the heart of TradingHub's products and services. This role is ideal for an engineer who enjoys working across large, complex systems and collaborating with a wide range of stakeholders.The right candidate...

London Stock Exchange is seeking a Senior Software Engineer to help build next-generation distribution capabilities for our index products, delivering index data to the global financial community through APIs, cloud platforms, file delivery, and AI-native protocols.The ideal candidate combines strong system design and data modelling with hands-on delivery,...

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...

Compensation: GBP 87,500 - GBP 111,000 - yearly 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...

Infused Solutions in the United Kingdom is hiring Software Engineers to own end-to-end delivery of production AI platforms for finance teams. You will oversee significant components from architecture through shipping, monitoring and iteration based on client feedback.The ideal candidate has 4–8 years’ experience shipping production systems at scale and a...

At Adaptive, we partner with capital, commodity and digital market participants, and we see technology as a true differentiator. Our experienced teams design and deliver complex front-office technology solutions, using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment...

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 JPMorganChase within the Infrastructure Platforms, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and...

YLD is a remote-first consultancy specialising in software engineering, product design, and data, with teams across London, Lisbon, and Porto. We seek a Senior Software Engineer to build scalable, fault-tolerant architectures and deliver outstanding products in a fast-paced environment.You will collaborate with cross-functional teams to design, implement,...

Clear Street is hiring a Senior Software Engineer to design and build the next generation EMS for listed futures and options. You’ll work on a high-performance platform with real-time data, low-latency exchange connectivity, robust risk controls, and a responsive web interface.You will collaborate across product, traders, and backend teams to deliver...

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...

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...

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...