About CircuitWorx
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.
About the Role
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.
Responsibilities
- 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
Required Skills & Experience
- 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 £30,000 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 £30,000.00 per year
Benefits:
- Casual dress
- Company events
- Company pension
- Free parking
- On-site parking
- Private medical insurance
- Profit sharing
- Sick pay
Work Location: In person
