Salary: £49,000 - 59,000 per year Requirements: Strong commercial experience programming in C within RTOS environments (Zephyr, FreeRTOS, or similar) Proven background in embedded software development for real-time, hardware-integrated systems Experience with wireless communication protocols and connectivity technologies Working knowledge of JavaScript and HTML Experience with Linux OS application development for testing or simulation Familiarity with embedded development tools, IDEs, and version control systems such as Git Demonstrated leadership experience, with the ability to manage workloads and motivate engineering teams Strong analytical and problem-solving skills, with the ability to work autonomously on complex systems Bachelors degree in Computer Science, Electronic Engineering, or a related discipline (or equivalent experience) 5 years experience in embedded software engineering Experience within consumer electronics, IoT, or similar embedded product environments is advantageous Responsibilities: Design, develop, and maintain embedded software for ARM-based hardware platforms, with a strong focus on real-time operating systems (RTOS), ideally Zephyr Lead and coordinate a site-based engineering team, including task allocation, workload prioritization, and day-to-day technical oversight Develop, debug, and maintain high-quality embedded C code, following best practices and coding standards (e.g. MISRA where appropriate) Implement and optimize wireless communication protocols such as Bluetooth, Wi-Fi, Zigbee, or similar technologies Collaborate closely with hardware engineers and other stakeholders to define requirements, architecture, and system design Support development of user interfaces or related applications using web-based technologies such as JavaScript and HTML Develop Linux-based applications for testing and simulation purposes Produce and maintain clear technical documentation covering design, implementation, testing, and troubleshooting Promote secure software development practices, including encryption and secure communication Stay up to date with emerging technologies and industry best practices to drive continuous improvement and innovation Technologies: ARM Bluetooth Embedded FreeRTOS Git Hardware IoT Support JavaScript Linux Web C++ More: We are a forward-thinking engineering environment looking for a Principal Software Design Engineer / Site Lead to join our team. This senior, hands-on role offers the opportunity to shape next-generation embedded products while leading a dedicated engineering group. We provide a stable and innovative space for professionals eager to take on significant, impactful work. last updated 8 week of 2026