Contract Firmware Engineer | Up to £400 p/d Outside IR35 | 5 days a week onsite - Birmingham | 6 months (rolling) We are looking for a highly motivated Contract Firmware Engineer to join our rapidly growing hardware startup customer. With a lean engineering-led culture, they design, build, and deliver Embedded Linux systems that integrate hardware, firmware, wireless connectivity, and cloud services. Key Responsibilities: Lead development of Debian-based Embedded Linux firmware. Build and maintain secure OTA pipelines (Mender), rollback and recovery systems. Implement secure boot, encryption, key handling and protected partitions. Develop manufacturing scripts for flashing, testing and validation. Required Skills andamp; Experience: 5+ years of experience in Embedded firmware or Embedded Linux development. Deep understanding of Debian/Linux system architecture and optimisation. Advanced proficiency in C++ and Python. Proven experience with Mender for OTA management and recovery workflows On Offer: Up to £400 Outside IR35 5 days a week onsite - Birmingham 6 months (rolling) This is an opportunity for a highly motivated and forward-thinking engineer to take ownership of their Embedded Linux platform and play a key role in building their next generation of connected devices. Due to a high volume of applications, not all applicants will receive feedback* Contract Firmware Engineer | Up to £400 p/d Outside IR35 | 5 days a week onsite - Birmingham | 6 months (rolling)