Software Engineer Software Developer - Critical Defence Systems Bristol Based - 4 days a week on site Are you a C++ developer who thrives on solving complex technical challenges? Do you want to work on software that truly matters-systems that sit at the heart of critical defence capability? If so, this is a rare opportunity to join an innovative engineering team working at the cutting edge of systems‑level development. The Opportunity You'll contribute across the full software development lifecycle, developing high‑integrity, mission‑critical systems for the defence sector. This role is ideal for someone who enjoys low‑level programming, systems architecture, and building robust software that performs flawlessly in demanding environments. What You'll Be Doing Designing, developing, and maintaining software aligned with defence, industry, and customer standards Implementing high‑quality C++ solutions within complex system architectures Testing, validating, and integrating software with wider system components Logging and tracking software issues to support product maturity and stability Participating in technical design, sprint planning, and Agile team routines Engaging with stakeholders to fully understand detailed system requirements Taking ownership of tasks and ensuring accurate progress tracking Key Skills & Experience Essential: Solid commercial experience with C++ Familiarity with systems‑level development, or a strong interest in learning it Understanding of OOP principles Practical experience with Git Highly Advantageous: Exposure to VBS, Qt, or graphics engines Experience working with complex simulations Interest in low‑level software, system internals, or architecture Personal Attributes We're looking for someone who is: Adaptable and comfortable working in fast‑moving environments Capable of managing shifting priorities with composure Analytical, methodical, and motivated to solve problems Reliable, proactive, and always keen to learn Why Join Us? You'll be part of a collaborative, highly skilled defence engineering team where your work directly contributes to national security. Expect a role that is technically fascinating, mission‑driven, and full of opportunities to grow your systems‑engineering capability