Backend Developer (Java 21, Spring, Networking and Messaging) for NATO with security clearance

This is straightforward, satisfying development work on a suite of tools that real operators use. You would design, build, test and maintain it, and keep the documentation honest — under a lead developer, alongside a service delivery manager and a project manager, in a team small enough that requirements discussions actually include you. The stack is current rather than legacy: Java 21 with Spring on the back end, Angular 20 on the front, and the usual tooling around it. There is real networkin…