java programmer jobs in London

A trusted UK Central Government technology programme is looking for an experienced Senior Java Developer to join their high-impact delivery team. Working on mission-critical systems that support national infrastructure, this role offers the chance to work fully remotely on challenging and technically rich work across legacy and modern platforms.You will be...

We’re hiring experienced Java Engineers for a major technology programme with one of the UK’s leading broadcast and media organisations. You’ll join a high-performing engineering team building and scaling event-driven, cloud-native services, working with modern technologies including Java, Kafka, Kubernetes and Docker. The role You’ll be hands-on...

Are you a passionate Java Developer looking to work on large-scale application transformation projects? Join us and play a key role in modernizing critical applications that support one of the UK's most important public sector organizations.About the RoleAs a Java Developer, you will contribute to the refactoring and modernization of key applications for the...

SmartChoice are supporting a data platform programme for a global financial services organisation and require a number of senior backend (Java) developers to join on a 6 month contract. In this role you will be responsible for: Design and implement core functionality within Data Fabric backend services. Develop and enhance rule definitions used for policy...

Netcompany in the UK is seeking a Managing Architect to lead end-to-end solution definition and delivery across multi-workstream programmes. You will translate complex requirements into executable architectures, validate critical assumptions, and govern quality and security gates to ensure delivery readiness.You will own specifications, roadmaps, and...

Northrop Grumman UK is offering a 12-month Industrial Placement Software Engineer programme starting September 2027 in New Malden, London. You will gain practical software engineering experience by developing software for defence programmes and contributing from day one in a collaborative team.You will work with Java/C++ in modern environments, participate...

Location: Remote (UK-based) - Occasional Travel to LondonClearance: SC clearance; or eligible for SCAs a Full Stack Developer, you will discover, design, build, cloud-based applications and prototypes that support discovery work.You'll work across both front-end and back-end development, helping teams explore, test, and validate new technical approaches and...

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...

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...

Java Developer - Up to 55K We're working with a global technology consultancy delivering secure, large-scale digital transformation programmes across multiple industries. They're looking for a Java Developer to join a growing engineering team building modern, cloud-based microservices platforms. This role is ideal for a developer who wants to level up...

Our client is a tier-one global financial institution driving an aggressive digital modernization across its capital markets infrastructure. They are currently re-architecting their core mission-critical workflow engine to scale from hundreds of concurrent users to thousands. This transformation involves integrating advanced AI, Large Language Models (LLMs),...

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...

A trusted UK Central Government technology programme is looking for an experienced Senior Java Developer to join their team. This role involves designing and coding applications while working collaboratively with other developers and testers. Candidates should have strong Java expertise, solid experience with Web APIs, and be able to manage complex...

We’re hiring experienced Java Engineers for a major technology programme with one of the UK’s leading broadcast and media organisations. You’ll join a high-performing engineering team building and scaling event-driven, cloud-native services, working with modern technologies including Java, Kafka, Kubernetes and Docker. The role You’ll be hands-on...

SmartChoice are supporting a data platform programme for a global financial services organisation and require a number of senior backend (Java) developers to join on a 6 month contract. In this role you will be responsible for: Design and implement core functionality within Data Fabric backend services. Develop and enhance rule definitions used for policy...

About Methods: Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create...

Energy Jobline ZR in London (Hybrid) seeks a Senior Java Architect to lead the design and delivery of enterprise-grade banking and payments platforms. You will provide technical leadership to offshore teams and define microservices and event-driven architectures for cross-border solutions.The role requires strong Java/Spring Boot experience within...

Are you a passionate Java Developer looking to work on large-scale application transformation projects? Join us and play a key role in modernizing critical applications that support one of the UK's most important public sector organizations.About the RoleAs a Java Developer, you will contribute to the refactoring and modernization of key applications for the...

Global Financial Services client is hiring for experienced Java or Python Engineers with strong Market Risk and FRTB IMA experience to join a high-profile regulatory technology programme. This will be a permanent role paying between £80K - £110K. Based in the City on a hybrid basis - 3 days per week in the office.Experience includes:Strong Java and/or...

Arrows is hiring experienced Java Engineers for a major technology programme with one of the UK's leading broadcast and media organisations. You’ll join a high-performing engineering team building and scaling event-driven, cloud-native services, working with modern technologies including Java, Kafka, Kubernetes and Docker.You’ll be hands-on across the...