Salary: £60,000 - 90,000 per year Requirements: Must have an Active SC Clearance Three to four years minimum Java development experience Strong experience with Maven, XML, SQL, and Java IDEs such as Eclipse Experience with version control systems such as Subversion Ability to work on large and complex code bases Strong communication skills with technical and non-technical stakeholders Experience with Linux, scripting, Atlassian tools, or modelling tools is beneficial Responsibilities: Design, develop, test, and support Java-based business applications Provide fourth line application support, including root cause analysis of live incidents and defects Assess and implement changes raised through formal change proposals Maintain and review High-Level Design (HLD), Low-Level Design (LLD), and component test documentation Carry out code reviews and mentor other developers, including offshore teams Support test, pilot, migration, and rollout activities across ongoing projects Technologies: Atlassian Eclipse Support Java Linux Maven SQL XML More: We are offering an opportunity for an experienced Application Developer to join our large-scale, long-running delivery programme supporting critical business applications. In this senior role, you will work within a mature enterprise environment that integrates software and infrastructure across a large data centre. This position promises long-term stability, technical depth, and the chance to make a real impact in a secure environment. last updated 6 week of 2026