Embedded Firmware Engineer

We are looking for an Embedded Firmware Engineer to join our growing team based at our office in West Dean, Salisbury. You will play a key role in delivering firmware solutions across a diverse portfolio of client projects, working with a wide variety of hardware platforms and communication standards. This is an excellent opportunity for an engineer who enjoys variety, thrives in a fast-paced consultancy environment, and wants to broaden their experience across multiple industries., * Design, develop, and maintain firmware in C/C++ for embedded microcontroller-based systems across multiple client projects

• Develop drivers and middleware for communication interfaces including I2C, SPI, UART, and CAN
• Work with STM32 and ESP32 platforms across the full development lifecycle, from hardware bring-up through to production release
• Implement real-time applications using FreeRTOS and/or Zephyr
• Develop supporting tooling and automation scripts in Python, including on Raspberry Pi based platforms
• Debug and optimise firmware using tools such as JTAG/SWD debuggers, logic analysers, and oscilloscopes
• Collaborate with hardware engineers to review schematics and support PCB bring-up
• Engage directly with clients to understand requirements and communicate technical progress where needed
• Contribute to code reviews and uphold high standards of code quality, documentation, and traceability - particularly important in regulated industries such as medical and automotive

• 2+ years of professional embedded firmware development experience
• Strong proficiency in C and C++ for bare-metal and RTOS-based systems
• Hands-on experience with ARM Cortex-M architecture
• Proven experience with STM32 and/or ESP32 microcontrollers
• Solid understanding of embedded communication interfaces: I2C, SPI, UART, CAN
• Ability to read and interpret schematics and datasheets
• Comfortable working across multiple concurrent projects with varying requirements

Desirable Skills

• Experience with FreeRTOS and/or Zephyr RTOS
• Familiarity with Linux-based development environments (build systems, shell scripting, toolchains)
• Python development experience, particularly on Raspberry Pi platforms
• Awareness of industry standards relevant to medical (e.g. IEC 62304) or automotive (e.g. AUTOSAR, ISO 26262) development
• Experience with version control (Git) and CI/CD pipelines for embedded systems

Hours & Working Pattern

• 36 hours per week with flexible working patterns available
• Office-based role at our West Dean, Salisbury location
• The office is within walking distance of a local train station, making it easily accessible by rail

What We Offer

• Salary from £40,000 dependent on experience
• Annual profit share - share directly in the company’s success
• Workplace pension with company contributions
• Private healthcare cover
• 36-hour working week with flexible working patterns
• Exposure to a wide range of industries and cutting-edge technologies
• A collaborative, engineering-led culture with real ownership of your work
• Convenient office location within walking distance of a train station
• Ongoing professional development and training opportunities

Pay: From £40,000.00 per year

Benefits:

• Casual dress
• Company events
• Company pension
• Free parking
• On-site parking
• Private medical insurance
• Profit sharing
• Sick pay

Work authorisation:

• United Kingdom (required)

CircuitWorx is a design consultancy delivering innovative embedded systems solutions across a broad range of industries. Our engineers work on varied, challenging projects spanning industrial sensing and control, consumer electronics, medical devices, and automotive applications - no two projects are the same. We pride ourselves on technical excellence and a collaborative approach that makes us a trusted partner to our clients.