Senior Java Engineer - London

Salary: £? - ? per year

Requirements:

• Strong core Java programming skills
• Strong systems development experience across all stages of the software delivery lifecycle, including design, development, testing, live implementation, and post-implementation support
• Strong hands-on object-oriented design skills
• Experience developing services and microservices in Java
• Hands-on Spring Boot experience
• Experience developing containerised services using Docker and Kubernetes
• Experience developing and deploying on Unix or Linux
• Hands-on experience with the Kafka ecosystem
• Experience with profiling and performance tuning
• Experience with Behaviour-Driven Development and Test-Driven Development principles and practices
• Experience with public cloud development
• Demonstrable solution design and development skills
• Strong communication and presentation skills
• Ability to motivate, mentor, and coach others
• Ability to work independently without close supervision
• Ability to complete work within agreed timescales and identify suitable solutions
• Desirable: experience working in an Agile development team
• Desirable: experience designing and implementing platform-independent, database-independent event-driven applications
• Desirable: database design experience with Oracle or similar technologies
• Desirable: experience with Splunk
• Desirable: experience with DevOps principles, processes, and tooling
• Desirable: experience with IBM MQ
• Desirable: familiarity with messaging standards such as ISO 15022, ISO 20022, and JSON
• Desirable: experience in Financial Market Infrastructure and/or regulated environments

Responsibilities:

• Work as part of an Agile development team to migrate a legacy application to a new event-based and service-oriented architecture
• Collaborate with the Solution Architect, Technical Lead, Application Architects, and other stakeholders
• Lead delivery of a coherent end-to-end IT solution that meets functional and non-functional requirements
• Ensure the solution complies with Enterprise engineering and architecture standards
• Ensure end-to-end consistency of solution delivery across platforms and teams by organising walkthroughs with delivery teams
• Ensure the solution meets design and development guidelines and standards
• Undertake hands-on development in the new technologies used
• Coach and support more junior colleagues

Technologies:

• AI
• Architect
• Cloud
• DevOps
• Docker
• IBM
• Support
• JSON
• Java
• Kafka
• Kubernetes
• Linux
• Oracle
• Splunk
• Spring
• Spring Boot
• Unix
• microservices

More:

We are hiring a Senior Java Engineer for a 12-month contract role based in London with a hybrid working pattern of two days per week on site, requiring around eight days on site per month. This is an AI-augmented delivery role within banking, focused on server-side deployment and migration work. The day rate is €600 to €700 inside IR35, with an ASAP start. We offer the opportunity to work on a major legacy migration into an event-based, service-oriented architecture while collaborating with experienced architecture and delivery stakeholders in a regulated environment.

last updated 33 week of 2026