senior java developer jobs in London

Senior Java Developer Department: Platform Delivery Employment Type: Permanent - Full Time Location: London Description We are looking for an experienced Senior Java Developer to join the engineering team at Xantura, helping to design, build, and evolve our cloud-based data and analytics platform used by local authorities and public sector organisations...

A leading IT Consultancy is seeking a Java Developer on a contract basis to work on a project with a leading telecoms client.You will be needed to work onsite in London 3 times a week.The Java Developer must have strong experience in Java, Spring and AWSExperience required:Strong Java and Spring knowledge and experience with technologies such as AWS,...

HireHi ищет квалифицированного разработчика для создания Forms capability: бэкенд на Java 21/Spring Boot 3 и фронтенд на React/Vite/TanStack. Приложение разворачивается в контейнерах на AWS EKS и интегрируется с Cognito, S3 и SES через...

We have an exciting and rewarding opportunity for you to take your software engineering career to the next level. As a Software Engineer III at JPMorgan Chase within the Commercial & Investment Bank's Payments Technology group, you play a vital role in an agile team dedicated to enhancing, building, and delivering reliable, market-leading technology products...

Areti Group | B Corp™ in the UK is recruiting a Java/Kotlin Developer to join a major public sector programme. You will design, implement and maintain backend services in Java and Kotlin, collaborating with cross‑functional teams.Experience in a UK Government environment is essential, with monthly travel to London, Leeds or Manchester and eligibility for...

Senior Software Engineer I (Java & JavaScript)Do you enjoy designing and developing scalable, high-performance applications using Java and JavaScript?About the team:You will join the Identity & Access Management team, which owns the authentication and authorisation infrastructure underpinning Elsevier’s global product suite. We build and operate a highly...

We are on the lookout for a Senior Software Engineer to join our Elasticsearch team and focus on ensuring that the shared platform functionalities of Elasticsearch are easy to use, performant, maintainable, and secureThe team’s mission is to create foundational infrastructure and shared functionality that enables engineers to develop, extend, and support...

Senior Ruby on Rails Engineer £600/day Inside IR35 | 6 Months | Predominantly Remote We are seeking a Senior Ruby on Rails Engineer to join a large-scale content transformation programme. This role goes beyond development, requiring someone who can lead technical discovery, solve complex business challenges and help shape scalable solutions from the...

Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real...

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. Look to join a team...

Java Developer ( SC Eligible/SC Cleared )London, United Kingdom | Posted on 10/11/2026Scrumconnect Consulting is a multi-award-winning UK digital consultancy. We help public and private sector organisations design and deliver better digital services, working in agile, multidisciplinary teams on services used by millions of people every day.Role OverviewWe...

JPMorgan Chase seeks a Software Engineer III (Java/Python) to join the Commercial & Investment Banking Emerging Markets Team in London. The role focuses on building, enhancing and delivering secure, scalable market-leading technology products within an agile team, contributing across design, development, testing, and operational stability.You will work with...

A leading technology firm in the United Kingdom is seeking a Senior Backend Developer to support a data platform programme for a global financial services organisation. The successful candidate will design and implement backend services, ensure high levels of automated testing, and integrate with various systems. Mandatory skills include strong experience...

Senior Java Engineer – High-Performance SystemsAre you an experienced Java Engineer who enjoys building complex, high-performance applications where speed, scalability and reliability really matter?We're hiring on behalf of a leading technology consultancy that designs and delivers business-critical platforms for some of the world's largest financial...

Job DescriptionSenior Java Architect | Banking, Payments & AI EngineeringLocation: London (Hybrid)Role Type: ContractRate: Up to £600 a day (Outside IR35)We're seeking an experienced Java Architect to play a key role in a major banking transformation programme, helping to deliver enterprise-scale banking and payments platforms with a focus on cross-border...

JPMorgan Chase seeks a Software Engineer III (Java/Python) to join the Commercial & Investment Banking Emerging Markets Team in London. The role focuses on building, enhancing and delivering secure, scalable market-leading technology products within an agile team, contributing across design, development, testing, and operational stability.You will work with...

Are you ready to make a difference and shape the future of technology? At JPMorganChase, you’ll be part of a dynamic team that thrives on innovation and collaboration. You’ll have the opportunity to grow your career, expand your skills, and work on projects that matter. We value your expertise and encourage you to push boundaries as you help deliver...

Edenred Paytech in the UK is seeking a Senior Software Engineer to provide technical leadership for a cross-functional team. You will guide architectural decisions, contribute hands-on development in Java, and mentor engineers to deliver robust systems.Based in a hybrid London or Swindon role with remote flexibility, you will collaborate with product,...

Job TitleSenior Java/FIX Engineer - IG PrimeJob DescriptionPrime Java/FIX EngineerSo, who are we?IG Group is a FTSE 100 fintech operating across five continents, serving over 1.4m customers and handling billions of dollars in transactions – built on scale, trust, and proof. We didn't pivot to innovation; it's how we've always operated. What that means for...

Elastic is seeking a Senior Software Developer for the Elasticsearch Security team in the United Kingdom. You will shape architecture, design, and delivery of core security features, including authentication, authorization, and tenant isolation, at scale.You will collaborate across engineering and product leadership to embed security into new customer...