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Principal Software Design Engineer
Job summary
A trusted recruitment partner is seeking a Principal Software Design Engineer / Site Lead in Greater London, UK. This senior role involves designing and developing embedded software for advanced platforms while leading a dedicated engineering team. The ideal candidate will have 5+ years of experience in embedded systems and a strong background in C programming within RTOS environments. This is a long-term, permanent position within a stable engineering environment, offering a chance to influence the development of next-generation embedded products.
Benefits
Qualifications
- 5+ years of experience in embedded software engineering.
- Experience in consumer electronics or IoT environments is advantageous.
Responsibilities
- Design, develop, and maintain embedded software for ARM-based hardware platforms.
- Lead and coordinate a site-based engineering team.
- Develop and maintain high-quality embedded C code.
- Implement wireless communication protocols.
- Collaborate with hardware engineers on system design.
- Develop Linux-based applications for testing.
- Produce clear technical documentation.
Skills
Education
Tools
TXM is recruiting on behalf of our client as their trusted recruitment partner for a Principal Software Design Engineer / Site Lead. This is a senior, hands‑on technical role combined with leadership responsibility, offering the opportunity to shape next‑generation embedded products while leading a site‑based engineering team.
This position is ideal for an experienced Embedded Software Engineer who enjoys both deep technical involvement and people leadership. You will take ownership of embedded software design and development for advanced hardware platforms, while coordinating and guiding a local engineering team to deliver high‑quality results.
- 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 prioritisation, 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 optimise 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.
- 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.
- Senior, influential role combining technical leadership and people management.
- Opportunity to work on innovative, next‑generation embedded products.
- Long‑term, permanent position within a stable and forward‑thinking engineering environment.
If you are interested and would like to hear more about this role, please apply right away!
* The salary benchmark is based on the target salaries of market leaders in their relevant sectors. It is intended to serve as a guide to help Premium Members assess open positions and to help in salary negotiations. The salary benchmark is not provided directly by the company, which could be significantly higher or lower.