staff java backend developer jobs in London

A leading consulting firm is looking for a Backend Java Developer specializing in Data Fabric and Platform Engineering. The role involves building core backend services in Java and implementing deterministic policy engines for data governance. Ideal candidates will have strong Java and SQL expertise along with experience in Docker and CI/CD. This position is...

Personio's intelligent HR platform helps small and medium-sized organizations unlock the power of people by making complicated, time-consuming tasks simple and efficient. Our team of 1,500 Personios is building user-friendly products that delight our 15,000+ customers and their 1.5 million employees. Ready to make an impact from day one? Senior Software...

Our Global Structure Deliveroo is now part of DoorDash, bringing together teams with even greater reach, scale, and ambition. Depending on your role, you may collaborate with teammates, systems, and leaders across DoorDash and Wolt. Together, we’re unlocking new possibilities as one global team. Staff Software Engineer Join us in our mission to...

Capgemini in London is seeking a Lead Java Full Stack Developer to drive the development of scalable enterprise applications across frontend and backend layers. You will design, develop, test and deploy high-quality solutions within an Agile framework.You will lead frontend work with HTML, CSS, JavaScript, React/Redux, Node.js and Jest, and backend with...

About WheelyWheely is redefining premium transportation across major cities in Europe, the US, and the Middle East. We blend cutting-edge technology with the craft of five-star chauffeuring to deliver an experience trusted by more than 100,000 active riders and 1,200 corporate accounts.About WheelyWheely is redefining premium transportation across major...

**Join our expanding engineering team!** We're hiring a permanent Senior Backend Engineer to join our Asset Sales group as we scale one of the most important parts of M-KOPA's FinTech platform. Build distributed, event-driven microservices and help shape what AI-native engineering looks like at M-KOPA. **The Impact 💚** Your code will directly power...

Location: UK (Hybrid / Onsite as required) Experience: 5+ years Role Type: Fixed Term Contract Overview We 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...

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...

Aalyria is a leading technology company that supplies laser communications technology and temporospatial software-defined networking platforms to the aerospace industry. With technology acquired from Google, Aalyria is at the forefront of innovation in satellite and airborne mesh networks, as well as cislunar and deep-space communications. We are...

Join us as a Software Engineer, Backend - This is an opportunity for a technically minded individual to join us as a Software Engineer - You’ll be designing, producing, testing and implementing working software, working across the lifecycle of the system - Hone your existing software engineering skills and advance your career in this critical role ...

PowerToFly is looking for a Software Development Engineer II to enhance backend services and systems. The candidate should have 2+ years of experience and a Bachelor’s degree in Computer Science or a related field.The position focuses on designing high-throughput services, implementing caching mechanisms, and working with technologies like Java and...

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across four core services: clearing, agency and execution, market...

Myn in London is recruiting for a Senior Java Engineer to join teams building and evolving large-scale, business-critical technology platforms.You will design, build and enhance Java-based services and APIs as part of an experienced engineering team across development, modernisation and continuous improvement. This role emphasizes performance, resilience and...

We’re seeking someone to join our team as an experienced algorithmic trading Java developer to support the Structured and Exchange-Traded Product market-making businesses. The candidate should possess good analytical skills and computer programming experience and a logical approach to problem solving. The role involves building, deploying and supporting...

Have you worked in a fast-paced start-up environment? Senior Backend Engineer – AI transforming the future Location: Hybrid in London approx. 1-2 days a week (flexible work hours) We are very excited to have just partnered with a rapidly rising AI infrastructure company that’s transforming how development and QA teams create, manage, and test...

Talan is seeking a Contract Senior Full Stack Developer to build a Forms capability with a Java 21/Spring Boot backend and a React/Vite frontend. The project will run in containers on AWS EKS and integrate with existing platform services via REST APIs and JWT.The contract is 1 month with a possible extension, and the contractor must be UK-based and eligible...

Job Title: Blockchain / DLT Developer Location: Ipswich, London or Remote As a Blockchain Developer at MACH, you will play a central role in designing, building, and deploying distributed ledger and smart contract solutions for our financial services clients. You will work across Ethereum, Hedera, Algorand, and MACH Chain (our proprietary blockchain...

Job DescriptionEnsure you read the information regarding this opportunity thoroughly before making an application.White Collar Factory (95009), United Kingdom, London, LondonStaff Software Engineer - Back EndAbout this roleDo you love shaping the technical landscape and driving innovation across the organisation?Are you passionate about solving complex...

Saragossa is seeking a strong backend engineer to own and develop in-house systems for a leading hedge fund. You will work on rebuilding internal tools and real-time trading platforms, with a focus on data-driven, scalable architectures.Collaborating with traders and revenue teams, you will ensure requirements are captured and translated into robust...

Our client is a leading IT services and digital transformation consultancy.Considering making an application for this job Check all the details in this job description, and then click on Apply. Company Description Our client has celebrated 30 years in business and continues to be trusted by global brands to deliver technology and transformation solutions...