java software developer jobs in London

## Software Development Engineer IIIApply: London: Full time: Posted Today: End Date: November 20, 2026 (30+ days left to apply): JR7506**“I can be myself at work.”**You are more than a job title. We want you to feel comfortable doing great work and bringing your best, authentic self to everything you do. We value your talents, traditions, and...

Harrington Starr is seeking a Java/Quant Developer for their London Office, focusing on crypto, FX and eFX trading systems. This hands-on role requires strong CS fundamentals and the ability to contribute to high‑performing algorithms in a fast-paced market. You will work on core Java development, market connectivity, low-latency systems and Linux...

Taking care of our customers, our communities and each other. By honoring this commitment, we have maintained our reputation as one of the best property casualty insurers in the industry for over 170 years. Join us to discover a culture that is rooted in innovation and thrives on collaboration. Join our innovative team of Architects at the forefront of a...

TAKE YOUR CAREER IN A NEW DIRECTION At Eurostar, we’re fuelling the future of rail travel – operating in five countries and sparking new opportunities for travellers.But our trains connect much more than just people and places. They’re helping us build a greener, more inclusive future for everyone.Join us and you’ll be part of a passionate team which...

DescriptionFlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world’s largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our...

Join the Future of Technology with ZILO™ At ZILO™, we're redefining what's possible in technology. ZILO™ is the UK-based FinTech specialising in global asset and wealth management software, designed to scale and transform businesses of all types using our own developed AI Technology. Our mission is to digitalise the future of the global asset...

Zaizi is looking for a Senior Software Developer with solid technology skills, but who is also passionate about improving outcomes and the user experience. You'll be reliable in your own deliverables but also curious about and offer innovative ideas to others in a mutli-disciplinary team. Our work culture is inclusive, modern, friendly, and democratic. We...

Overview Starling is the UK's first and leading digital bank on a mission to fix banking. We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. We're a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. We're a bank,...

Put your engineering skills to work on products that matter. You will collaborate with an agile team to design, build, and improve secure, scalable technology. This role is built for growth, giving you hands‑on experience across the software development life cycle while strengthening your development and troubleshooting skills. You will learn from peers,...

Senior Software Engineer – (Java / Spring / AWS) Edinburgh, Leeds, Manchester or London Build software that matters. Shape the future of engineering. We’re looking for an experienced Senior Backend Java Engineer who is passionate about building scalable, high-quality software and helping teams grow. This is more than a hands‑on engineering...

Job Description Join a team where your engineering decisions matter at scale. At JPMorganChase, we build production-grade software that powers critical Global Banking businesses — and we're looking for engineers who take ownership, raise the bar, and grow fast. You'll work in a culture of strong code reviews, fast feedback, and scalable architecture, with...

**My client, a boutique hedge fund, is seeking a senior software developer to join their in-house development team in London.** The team builds and maintains internal applications for IT, operations, finance and other business functions across the firm, working closely with the stakeholders who rely on them. The successful candidate will have 8+ years’...

A financial technology firm in Greater London is seeking a Java Swing Developer to enhance its high-performance desktop trading platform. This role includes maintaining a Java Swing-based UI and transitioning the architecture to microservices. The ideal candidate will have strong Core Java skills, experience with multithreaded architectures, and familiarity...

Join to apply for the Java Developer - Leicester role at IBM. Introduction At IBM CIC, we provide technical and industry expertise to a wide range of public and private sector clients in the UK. A career in IBM CIC means you’ll have the opportunity to work with leading professionals across multiple industries to improve the hybrid cloud and AI journey for...

Hunter Bond is seeking an entry-level Software Developer in London to join a front-office engineering team. You will contribute to building scalable applications used by traders and product teams, gaining exposure to revenue-facing systems.This role suits recent graduates or early-career engineers who want hands-on experience in fintech, collaboration across...

Paid Parental Leave Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter....

55,000 - 75,000London AreaHave you got 1-2 years experience as a Java Developer and are looking for the next step in your career? Junior Software Engineer – Global FX TradingLocation – 3 days hybrid in LondonSalary - 55,000-70,000 + bonusOur longstanding partner, who are leading at the forefront of FX trading around the world, are on the hunt for a...

CMC Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence is critical. You'll design and build...

A leading financial technology environment is looking for a Senior Java Low-Latency Developer to join a 12-month contract in London, working hybrid three days a week. You'll be part of a global engineering function delivering technology where performance, resilience and reliability are critical. The role focuses on building and enhancing high-performance...

Location: LondonContract: 12 monthsWorking Pattern: Hybrid - 3 days per week onsitePositions: 3We are recruiting experienced Senior Java Low-Latency Developers to design and develop high-performance trading, exchange connectivity and Direct Market Access platforms.This is a hands-on senior engineering role focused on building resilient, scalable and...