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Ovarro Logo Ovarro · IT - Software Development

Firmware Engineer

United Kingdom, Wirksworth Employment contract · Job Posted June 14, 2026
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Job Description

Ovarro is seeking a talented Firmware Engineer to join our team working on technology for Critical Infrastructure. You’ll play a role in 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++, 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

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