Simulation Software Engineer

C# Real-Time Simulation Engineer (Defence Systems)

Bristol | Hybrid (2–3 days onsite) | Sole British nationals only

This is not a general software or web development role.

We are not looking for candidates whose experience is primarily in:

• Web / backend (.NET APIs, enterprise systems)
• Mobile or front‑end development
• Data analytics without real‑time systems experience

You will develop real‑time, performance‑critical simulation software used to model complex defence systems (e.g. missile systems, sensors, and system interactions). Your work will:

• Run under real‑time constraints where timing and determinism matter
• Interface with hardware‑in‑the‑loop rigs and test environments
• Support verification, validation, and demonstration of physical systems
• Contribute to distributed simulation environments used across engineering teams

• Strong C# software engineering experience in a real‑time or performance‑sensitive context (not typical enterprise/web applications)
• Experience with real‑time systems, simulation, or systems modelling
• Solid understanding of:
  • Multithreading / concurrency
  • Performance optimisation
  • Software design for deterministic systems
• Experience working in:
  • Agile environments
  • Test‑driven development / unit testing
  • CI/CD pipelines

• Defence, aerospace, or robotics
• Real‑time / embedded systems engineering
• Simulation or modelling of physical systems
• Game engine development (Unity/Unreal) with a strong systems/programming focus
• High‑performance or low‑latency software development

Due to security classification, this role is only open to sole British nationals.

• Bonus up to £2,500
• Pension matched up to 14%
• Paid overtime opportunities
• Onsite facilities (subsidised meals, free parking)
• Enhanced parental leave (up to 26 weeks)

This is an opportunity to work on engineering‑grade software, not business systems. Your code directly contributes to real‑world system behaviour, testing, and validation of advanced defence technology.