> Markdown version of [/jobs/ext/4610766-senior-java-developer-financial-services-essex](https://www.wearedevelopers.com/jobs/ext/4610766-senior-java-developer-financial-services-essex). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Java Developer - Financial Services - Essex - **Company:** Square One Resources Limited - **Location:** Dunton Wayletts, United Kingdom - **Experience:** Expert - **Salary:** £148,200 - £159,380 - **Contract:** Temporary contract - **Skills:** Microsoft Access, Java (Programming Language), Amazon Web Services, Microsoft Azure, Cloud Computing, Identity and Access Management, OAuth, Pair Programming, Software Engineering, Test-Driven Development (TDD) - **Published:** November 7, 2026 - **Apply:** https://www.careerboard.com/gb/en/find-jobs-in-United-Kingdom/-A2D82C9E0594600C84/ ## About the Role * Strongexperience in Back End software engineering * Pair Programming experience * Test driven development * Strong Java development experience * Strong IAM (Identity Access Managementpreferably Oauth & Azure * Exposure to cloud platforms such as GCP, AWS, or Azure * Experience designing & building high-scale Back End services * Mentoring Junior Engineers ## Description * Designing and building high-scale Back End services using Java * Developing secure and resilient identity and access management solutions * Working on systems supporting high-volume transactional workloads in a regulated environment * Applying Test Driven Development (TDD) throughout the software development lifecycle