Software Engineer, Backend Developer, Full Stack Developer

Senior & Principal Level Software Engineers Required

Location: Hybrid/Warminster

Security Clearance: Must be eligible for UK SC Clearance

Salary: £60,000-£100,000 (DOE) + Benefits

iO Associates is working with a leading technology company who help build a training management platform used by international defence organisations and allied forces in more than 70 countries.

They're looking for a Full Stack Engineers to design, develop and enhance new features across their platform, working on everything from modern Angular front ends to Java backend services, APIs and SQL databases. You'll also build integrations with customer ERP systems, data platforms and partner applications as part of a major UK defence transformation programme.

This is a hands‑on role with real technical ownership, giving you the opportunity to influence architecture, engineering standards and best practices while mentoring other developers.

• Strong experience with Java, Angular/Type Script and SQL
• Experience building full stack applications and REST APIs
• Knowledge of system integrations, CI/CD and automated testing
• Comfortable working in an agile environment with evolving requirements
• Excellent communication skills and a collaborative approach
• Eligible for Security Clearance (SC)

If this role is of interest, apply to the link for consideration!