Senior Embedded Software Engineer Stroud, Gloucestershire | Up to £70,000 KO2’s client is a well-funded, fast-growing tech start-up building intelligent, ultra-low-power sensing systems for real-world environments. Their platforms combine embedded firmware, signal processing, secure wireless connectivity, and edge ML. They need a Senior Embedded Software Engineer to take ownership from concept to production. What You’ll Do * Architect and develop low-power embedded firmware (C/C++) * Design battery-powered, remote sensing systems * Build sensor acquisition & real-time signal processing pipelines (MEMS mics, accelerometers, environmental sensors) * Develop RF systems (LoRa / LPWAN, mesh networking) * Implement secure communications (encryption, authentication, secure boot, OTA) * Deploy optimised ML models for on-device acoustic detection You’ll work closely with hardware, data and product teams to deliver secure, robust, production-ready systems. What You’ll Bring * Strong embedded C/C++ expertise * Full product lifecycle experience (concept → production) * Proven low-power design experience * Sensor integration & real-time processing * RF experience (LoRa or similar) * Mesh networking & embedded security * Strong debugging and hardware bring-up skills Bonus: Acoustic ML, MEMS microphone systems, noise mitigation, start-up experie...