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Ovarro is seeking a talented Senior Firmware Engineer to join our team working on technology for Critical Infrastructure. You’ll play a key role in leading the design, development, and optimisation of embedded firmware for our next generation IoT dataloggers, sensors. The ideal candidate has deep technical expertise in 4G modems (LTE Cat 1 / Cat M1 / NB IoT), low power embedded systems, and high reliability field-deployed devices used in utility networks.
Job Responsibility:
Design, develop, and maintain embedded firmware for battery-powered IoT dataloggers
Implement robust modem communication stacks for LTE Cat 1, NB IoT, LTE M, and multi band 2G/3G fallback where applicable
Integrate sensing technologies including pressure, flow, acoustic, ultrasonic, temperature, analogue (0–10V, 4–20mA), and digital pulse inputs
Develop efficient data logging, power management, wake/sleep regimes, and OTA update mechanisms
Deliver secure, reliable communication using HTTPS, MQTT, or similar protocols
Requirements:
Strong professional experience in embedded firmware development for IoT devices
Proficiency in C/C++
Proficiency in TI MSP, Atmel, ST Microelectronics microcontrollers and embedded debugging
Hands on experience with 4G modems, especially LTE Cat M1 / NB IoT / LTE Cat 1, including AT command stacks and vendor SDKs
Strong understanding of low power design, sensor integration, analogue/digital interfaces, and wireless communication constraints
Nice to have:
Knowledge of clean water network operations, DMA monitoring, and leakage detection techniques is preferred