Surrey - 5 days onsite £50,000–£85,000 + benefits UK Passport required - eligible for MOD clearance Standard 8 is recruiting a Senior Java/C++ GUI Developer for a defence engineering team building real-time, high-data systems used in live operational environments. This is not web apps. It’s performance-heavy software, complex GUIs and systems that have to work first time. The Job You’ll join an experienced Java team developing desktop applications for data-intensive, mathematically heavy systems. Day to day: * Building Java applications with JavaFX or Swing * Working in Linux environments * Contributing to real-time processing systems * Getting stuck into C++ where needed * Testing properly, not just hoping for the best What You Need * 5+ years’ Java background software engineering experience * Solid GUI development using JavaFX or Swing * Some C++ experience (at least a year) * Experience with real-time or high-throughput systems * Comfortable working on Linux You’ll need to be methodical, adaptable and take pride in your work. No hand-holding. Nice to Have * Linux optimisation and deployment experience * Networking fundamentals (IP protocols, Ethernet configuration) * Low-level Linux or driver interfacing * DSP, signal or image processing knowledge Non-Negotiables * ...