Java Developer jobs in Greater London

You will work closely with quantitative researchers, traders, and infrastructure teams to deliver software that operates at microsecond latencies, scales globally, and directly contributes to our competitive edge in the markets. Key Responsibilities Design, develop, and maintain low-latency, high-throughput trading platforms in Java.

You will contribute as a Backend Java Engineer, designing, implementing, and maintaining Java-based applications and microservices.

You will write clean and maintainable code, collaborate with cross-functional teams to deliver new features, and ensure the performance and quality of our applications.

3 x Senior Java Developers Front Office Banking London I have 3 new exclusive opportunities for Front Office Java developers to join a thriving bank as they are building out their Front Office Java development team- 3 headcount- as part of growth and development. The bank area is Front Office pricing and risk, and we can look at any front office Java developers Role details - Role title:...

LocationBloomsbury Square, London, United Kingdom# Senior Java Developer at N Consulting LtdLocationBloomsbury Square, London, United KingdomSalary£400 - £450 /dayJob TypeContractDate PostedSeptember 12th, 2025Apply NowWork mode: Hybrid, Office location will be Bishopsgate, London Contract duration: 6 months Location: London --------------------------------------- JOB DETAILS Role Title:...

Company DescriptionVersion 1 has celebrated over 26 years in Technology Services and continues to be trusted by global brands to deliver solutions that drive customer success. Version 1 has several strategic technology partners including Microsoft, AWS, Oracle, Red Hat, OutSystems and Snowflake. We’re also an award-winning employer reflecting how employees are at the heart of Version 1.We’ve been...

Job Description HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare,...

You will drive continual improvement in your team’s automation frameworks and coverage while mentoring other SDETs in the team on industry leading technologies and test practices.

You will guide and participate hands-on in the team’s testing efforts to ensure quality of coverage, quality of code and quality of delivery.

You will play a key role in designing, building, and maintaining both the front-end and back-end components of high-performing web applications using Java, Spring Boot, and modern front-end frameworks. This is a great opportunity to work on large-scale, cloud-hosted systems that require performance, scalability, and innovation.

You will join a small team building a greenfield pricing engine. You'll be doing everything from building the infrastructure itself to touching/scaling the models. You'll be architecting, building and then supporting the solution from a very early stage and working directly with the Traders that use it.

About Apexon:Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. We have been meeting customers wherever they are in the digital lifecycle and helping them outperform their competition through speed and innovation.Apexon brings together distinct core competencies – in AI, analytics, app...

2 weeks ago Be among the first 25 applicantsThe Trading Infrastructure team is building a high-performance, front-to-back Trading Platform that supports multi-asset trading. The platform is designed to handle financial instruments with low-latency execution, robust risk controls, and seamless integration across trading, risk, operations, and finance workflows.The system is built with a modular...

Do you have 3-5 years experience and are looking for your next challenge? Have you been developing with Core Java without the use of frameworks? Mid Java Developer Leading FinTech Location hybrid in London 3 days a week Salary up to £90k + bonus We are working with our long-term partners on the hunt for numerous Mid-level Java Developers as they continue to expand various teams. They began their...

Overview Uneek have partnered with a leading energy company who provide cutting-edge cleantech solutions in their search for a Senior SDET to join their team. Their mission is to help utilities transition to a more sustainable, customer-focused future.Senior Software Development Engineer in Test (Java & Selenium) – you will design and maintain robust test frameworks, build enterprise-level...

You will be responsible for designing and developing scalable, robust software solutions using Java, with a focus on system design and performance. AWS experience is a plus, and financial industry knowledge would be beneficial but not required. Key Responsibilities: Work on full-stack development, including front-end, back-end, and infrastructure.

Sterlings are excited to partner with a Tier 1 Investment Bank as they look to expand their Electronic Trading Technology division in London. This is a senior engineering, hands-on technical leadership role for the EMEA region – yours and the team’s focus will be on the engineering and development of several algorithmic engines that support benchmark algos, smart order routing and internal...

Lead Engineer – Investment Finance (Java & Cloud) City of London | 💼 £145,000–£155,000 | 🏢 4 Days in the office We’re working with a prestigious investment finance organisation in the heart of the City of London, seeking a dynamic and technically astute Lead Engineer to drive innovation across both cloud infrastructure and application engineering. This is a hands-on leadership role for someone...

OverviewFor over 20 years, Global Relay has set the standard in enterprise information archiving with industry-leading cloud archiving, surveillance, eDiscovery, and analytics solutions. We securely capture and preserve the communications data of the world’s most highly regulated firms, giving them greater visibility and control over their information and ensuring compliance with stringent...

Job Description HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare,...

Job Description HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare,...

Job Description HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare,...