Principal Software Engineer - Level 6 Site: Southampton Rate: £66.67 P/H Umbrella Overview An opportunity for an experienced Embedded Software Engineer to contribute to the development of next-generation airborne communication systems within the defence sector. The role focuses on low-level (“bare metal”) software development for real-time, safety-critical environments. Key Responsibilities Design, develop, and implement embedded software solutions for real-time and safety-critical systems Write efficient, reliable code for low-level (bare metal) applications Contribute to the full software development lifecycle, including design, coding, and testing Collaborate with cross-functional engineering teams to deliver high-performance solutions Ensure compliance with relevant coding and design standards Required Skills & Experience Strong experience in embedded C/C++ development, particularly bare metal Knowledge of embedded communication interfaces (e.g. CAN, I2C, SPI, GPIO) Familiarity with embedded development tools and workflows Experience developing applications on Windows and/or Linux Understanding of iterative development methodologies (e.g. Agile) Awareness of coding standards and best practices for safety-critical systems