Embedded Firmware Engineer: ARM Cortex-M & FreeRTOS

Fort Recruitment; Birkenhead; On-site; GBP 55,000 - 60,000; Full time

Benefits offered by this job

Salary progression

Holiday allowance

Personal pension scheme

Benefits package

Job summary

Fort Recruitment is seeking a Firmware Developer to build and maintain embedded software for industrial systems and connected hardware. This full-time permanent role involves low-level firmware, real-time systems, microcontroller peripherals, and close collaboration with electronics and systems engineers.

You will work across the complete firmware lifecycle from requirements to production support. Design, implement and debug interfaces (UART, SPI, I2C, Ethernet), optimize for speed and memory,

Qualifications

• Strong proficiency in C programming.
• Commercial experience developing embedded firmware.
• Experience with ARM Cortex-M0 and/or Cortex-M4.
• Experience with FreeRTOS or similar RTOS.
• Solid understanding of multithreaded programming.
• Experience with UART, SPI, I2C, and Ethernet.
• Experience with MCU peripherals (ADC, DAC, timers, DMA, interrupts).
• Understanding of TCP/IP networking (lwIP).
• Ability to debug firmware with hardware tools.
• Ability to optimize firmware for speed, memory, and power.

Responsibilities

• Design, develop, test, and maintain embedded firmware in C.
• Develop software for ARM Cortex-M0 and Cortex-M4 MCUs.
• Build and maintain FreeRTOS-based applications with reliable multithreaded design.
• Implement and debug interfaces: UART, SPI, I2C, Ethernet.
• Work with MCU peripherals: ADCs, DACs, timers, interrupts, DMA.
• Integrate TCP/IP networking using lwIP.
• Hardware bring-up, debugging firmware with electronics teams.
• Optimize firmware for speed, memory, and power; develop diagnostics and updates.
• Read electrical schematics and collaborate with hardware engineers.
• Use Git for version control and collaboration.
• Support system integration, validation, manufacturing, field support.
• Create and maintain technical documentation.

Skills

C programming

Embedded firmware

ARM Cortex-M0/M4

FreeRTOS

Multithreading

UART_SPI_I2C_Ethernet

lwIP

Git

Firmware debugging

Electrical schematics

Job description

Fort Recruitment is seeking a Firmware Developer to build and maintain embedded software for industrial systems and connected hardware. This full-time permanent role involves low-level firmware, real-time systems, microcontroller peripherals, and close collaboration with electronics and systems engineers.

You will work across the complete firmware lifecycle from requirements to production support. Design, implement and debug interfaces (UART, SPI, I2C, Ethernet), optimize for speed and memory,