Firmware engineering sits at the heart of every connected product. We share current UK salary data, in-demand skills and the hiring patterns we're seeing across IoT, industrial and consumer electronics sectors.

Hiring Firmware Engineers in the UK: Salary Benchmarks and Market Trends

Firmware engineering has quietly become one of the most in-demand disciplines in UK embedded engineering, driven by the explosion of connected, battery-powered and safety-critical products across consumer, industrial and medical markets.

Firmware engineers (those working at the intersection of hardware and software, developing bare-metal and RTOS-based code for microcontrollers) are consistently among the hardest profiles to place quickly.

Current UK market benchmarks (2026):

• Junior Firmware Engineer (1–3 years): £38,000–£52,000 • Mid-level Firmware Engineer (3–6 years): £55,000–£70,000 • Senior Firmware Engineer (6+ years): £72,000–£90,000 • Principal / Lead Firmware Engineer: £90,000–£110,000+ • Contract rates: £400–£600/day depending on specialism and location

In-demand skills we see repeatedly: • ARM Cortex-M development (M0, M3, M4, M33) • FreeRTOS, Zephyr RTOS • BLE, Zigbee, LoRa and other wireless protocol stacks • Low-power design and sleep mode optimisation • Hardware debugging: JTAG, oscilloscopes, logic analysers • USB, CAN, SPI, I2C peripheral development

Companies that define their firmware stack clearly in the hiring brief (specifying the MCU families, RTOS, communication protocols and product type) consistently attract better candidates and reduce time-to-shortlist significantly.