Jobs for staff java backend developer at London

Koinly is a successful product used by crypto investors around the world, helping them make sense of complex portfolios and tax obligations across chains, wallets, exchanges, and Defi protocols. The bar is simple to describe and hard to deliver: a user should be able to reconcile thousands of transactions and file their taxes in under 20 minutes. We're...

Job Title: Senior Full Stack Developer (Java & Angular) - Subject Matter Expert (SME) Location: London / 3 days onsite Employment Type: Permanent About the Role: Are you an experienced developer with a strong backend Java foundation and a flair for modern UI frameworks? Are you ready to step up, assume leadership responsibilities, and design...

About UsEvery business needs to know who they’re really working with whether it’s suppliers, investors, partners, or third parties. At Xapien, we’re reinventing how organisations do that, combining speed, scale and accuracy with cutting-edge AI.Since 2018, we’ve grown from a deep-tech startup to a global player in AI-driven due diligence and risk...

Location: UK (Hybrid / Onsite as required)Experience: 5+ yearsRole Type: Fixed Term ContractOverviewWe are developing a scalable Data Fabric platform that ingests, transforms, and serves trusted data products across multiple domains. The platform spans on‑premise and cloud environments and underpins a wide range of analytics and operational...

Job SummaryAs a Senior Java Developer at Eeze you will play a crucial role in shaping the development of our live casino games from concept to delivery. This position is perfect for those with a startup mindset, the ability to work independently, take initiative, and make their own decisions. Main ResponsibilitiesDesign and develop live casino games...

Backend Software Engineer / Developer (C# .Net Java Low Latency) London to £90kAre you a technologist who enjoys contributing to technical discussions and using the best tool for the job?You could be progressing your career at a global, financial Market Data provider whilst enjoying a range of perks and benefits.What's in it for you:Salary to £90k +...

A leading organisation within the Energy & Utilities sector is seeking an experienced Java Application Developer to support the delivery of business-critical applications within a modern cloud-native environment.£520 p/d Inside IR35Mainly Remote (1 day a week in London, the rest is WFH)6 month+ contractIn the role you will design, develop and support...

If you're a Principal level Java or Kotlin Developer who wants to stay hands-on while having a genuine influence over architecture, technology and the engineers around you, this is a role worth exploring. This is an opportunity to take a leading technical role on a large, high-throughput platform within the telecommunications and online payments space.Java /...

Help build and operate reliable, scalable and secure digital services that support UK businesses and trade . Department for Business, Innovation, Science and Trade (BIST), in partnership with Inspire People, is seeking a Senior Backend Engineer. Whilst the team primarily develops in Python, we welcome applications from experienced backend developers with...

About Scrumconnect ConsultingScrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens.With a strong commitment to user-centred design and agile delivery, we continue to build...

Company DescriptionVertex Solutions is a specialist technical recruitment company which works with some of the Europe's brightest and most innovative technology companies within Research, Development and Science. Since 1997, we have helped to build talented teams of Engineers (Software, Hardware and IT/Network Support) and scientific staff from graduate...

P-1514 At Databricks, we are passionate about enabling data teams to solve the world's toughest problems — from making the next mode of transportation a reality to accelerating the development of medical breakthroughs. We do this by building and running the world's best data and AI infrastructure platform so our customers can use deep data insights to...

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...

Accepting applications until: 16 October 2026Job DescriptionYour Role: Senior Java DeveloperWe’re looking for an experienced backend engineer with a passion for technical excellence and improving user experiences. You’ll join our DAX engineering team, working on our ad server platform and related products that power campaign delivery at scale. This role...

Job DescriptionMy client, a startup in London, is looking for a Backend Engineer. For full details, please apply.At A Minimum, We Would Expect -Enthusiasm for developing technologies to solve real problems -Demonstrable coding skills -Confidence to challenge our engineering customs and practices -Overwhelming desire to ‘do the right thing’ for customers...

We are looking for an experienced Full-Stack Developer to design, develop, and maintain scalable web and mobile applications. The role involves building modern user interfaces using React or React Native, developing robust backend services using Java, and ensuring seamless integration between front-end and back-end systems. Key Responsibilities •  ...

Java DeveloperHealthTech Scale-Up??Wokingham, Berkshire (Hybrid) ??Up to £85,000 + Benefits Were partnering with one of the UKsfastest-growing HealthTech scale-ups , transforming how hospitals deliver care through modern, cloud-based technology. In just a few years, the business has evolved from a disruptive start-up into atrusted technology partner to...

Principal Backend Engineer / Developer (Java Spring Boot AWS) London / WFH to £120kAre you an experienced Java Software Engineer who enjoys taking technical ownership, leading projects and working directly with clients?You could be progressing your career at a global technology consultancy, working on complex, long-term transformation projects, primarily...

Backend Software Engineer / Developer (Java Kafka) London / WFH to £90kAre you a Java technologist seeking a role where you can work on ground breaking technology, continually learning and progressing your career?You could be joining a global technology consultancy.What's in it for you:As a Software Engineer / Developer you will earn a highly competitive...

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...