Senior Firmware Engineer

Salary: £25,000 - 37,000 per year

Requirements:

• We are seeking a highly experienced Senior Firmware Engineer with strong technical expertise in low-power embedded systems, cellular IoT communications, secure device connectivity, and high-reliability battery-powered products.
• We need experience supporting water, wastewater, environmental, and utility monitoring applications.
• We require the ability and willingness to travel between Derby and Sheffield as business needs require.
• We require the ability and willingness to undertake occasional international travel, including travel to the USA, to support product development, collaboration, customer engagement, supplier activity, or transfer work.

Responsibilities:

• We design, develop, optimise, and support embedded firmware for Orbis and Aquam IoT products, including next-generation dataloggers, sensors, and field-deployed monitoring devices.
• We contribute across the full product lifecycle, from architecture and design through implementation, verification, production support, field diagnostics, and continuous improvement.
• We design, develop, and maintain embedded firmware for battery-powered IoT dataloggers, sensors, and utility monitoring devices.
• We implement and optimise communication stacks for LTE Cat 1, LTE-M, NB-IoT, and other cellular or short-range connectivity technologies as required by our product roadmap.
• We integrate sensing technologies such as pressure, flow, acoustic, ultrasonic, temperature, analogue inputs, digital pulse inputs, and other field instrumentation interfaces.
• We develop efficient data logging, power-management, wake/sleep regimes, OTA update mechanisms, diagnostics, and fault recovery behaviours for field-deployed devices.
• We deliver secure and reliable device-to-cloud communications using HTTPS, MQTT, certificates, encryption, and appropriate authentication mechanisms.

Technologies:

• Cloud
• Embedded
• Firmware
• Flow
• IoT
• Support
• MQTT
• Hardware

More:

We are hiring a Senior Firmware Engineer for our Orbis and Aquam IoT products. This is an in-person role with free parking and on-site parking available. The position supports the development of next-generation dataloggers, sensors, and field-deployed monitoring devices for water, wastewater, environmental, and utility monitoring applications.

last updated 33 week of 2026