Senior Software Engineer – Embedded Systems | Defence Tech | Southampton (On-Site) Southampton | Permanent | Up to £60,000 Benefits | VC-Backed Scale-Up (Series B, £3.8M) Are you an experienced embedded engineer who thrives on building high-performance systems in real-world environments? We’re working with a VC-backed engineering scale-up that develops advanced radiation detection and identification technology for Defence, security, and emergency services. Following £3.8M in Series B funding and consistent growth, they’re now expanding their software engineering team — and this is your chance to get involved in technically challenging, meaningful work. What You’ll Do Design and implement embedded software solutions across Linux and RTOS platforms Work closely with hardware teams on sensor and FPGA integration Contribute to system architecture, DevOps pipelines, and product delivery Solve complex problems involving real-time performance, reliability, and safety Participate in code reviews, sprint planning, and collaborative decision-making What You’ll Bring 5 years’ experience in embedded software development using C/C++ Strong knowledge of Linux systems, device drivers, and hardware interfacing Experience working with embedded systems, real-time constraints, and low-level protocols Proficiency in Python, Git, and modern development workflows A proactive, problem-solving mindset and a collaborative approach to engineering ✅ Nice to Have Experience with FPGAs, DSPs, or RF systems Exposure to DevOps/CI tools (e.g. Jenkins, GitLab CI) Familiarity with cloud-native development, IaC tools (Ansible, Terraform, Docker) Security clearance (SC) or eligibility to obtain it Location & Working Style This is a primarily on-site role based in Southampton, working closely with hardware and product teams in a hands-on, collaborative environment. Why Join? Work on complex, real-world systems that have global impact Join a growing, well-funded scale-up with a highly respected engineering team Take on real technical ownership with long-term growth and learning opportunities Salary: Up to £60,000 depending on experience. Apply now or message me to learn more.