Back End Developer

We're supporting a major UK insurer to hire a Senior Java Backend Contractor to strengthen a team building business-critical internal platforms used every day across the organisation.

You'll join a modern engineering setup delivering and running Spring Boot APIs that power agent tooling and integrations. This is a hands-on role where quality matters: clean code, solid tests, reliable releases - and the confidence to jump into production debugging when needed.

What you'll be doing

• Building, enhancing and maintaining Java/Spring Boot REST APIs
• Working across multiple API repositories in a Kanban delivery flow
• Writing well-tested code (unit tests as standard)
• Deploying and supporting services on Azure Kubernetes Service (AKS)
• Contributing to CI/CD pipelines, reviews and engineering best practice
• Troubleshooting defects and supporting incident resolution when issues arise
• Keeping technical documentation accurate and useful
• Helping others succeed through coaching/mentoring and knowledge sharing

Essential

• Strong commercial experience with Java + Spring Boot
• Solid SQL and relational database experience
• Proven delivery on Kubernetes, ideally AKS
• Strong API experience (REST, Git, PR reviews)

Desirable

• Azure DevOps and YAML pipelines
• Docker / containerisation
• Cucumber/Gherkin, Azure Data Factory, or GenAI exposure

• High day rate: £700/day inside IR35
• Fully remote
• Long runway: 9 months with extension potential
• A role with genuine impact on an enterprise-scale, business-critical platform