Senior Firmware Developer - Freelance

Freelance Senior Firmware Developer

iO Associates are currently working with a company who are expanding their network of freelance specialists to support a growing pipeline of embedded development projects. The organisation provides engineering expertise for a wide range of technology‑driven clients and covers the full lifecycle of hardware‑related software development. They are now seeking an experienced Senior Firmware Developer to join their extended team on a project‑by‑project basis.

Responsibilities

• Design, develop, and maintain firmware for embedded systems
• Modernise and extend existing firmware using improved algorithms, tools, and development approaches
• Plan, run, and document module, system, and integration tests
• Research and evaluate new technologies and methods relevant to embedded development
• Collaborate closely with hardware engineers and design teams to ensure cohesive system integration from prototype through to production

Requirements

• Degree in computer science, electrical/electronic engineering, or a related technical discipline
• Strong, demonstrable expertise in embedded C programming
• Experience with additional languages such as C++ or Python is welcome
• Several years of hands‑on firmware development experience in embedded environments
• Good understanding of analogue and digital electronics and digital signal processing concepts
• Familiarity with common communication interfaces such as UART, I²C, SPI, Ethernet, CAN, etc.
• Ideally, experience with low‑level development on platforms like Linux or real‑time operating systems (e.g., FreeRTOS)
• Basic knowledge of measurement techniques and test instrumentation
• Strong German and English language skills

If you’re a Senior Firmware Developer interested in supporting innovative and technically challenging projects, we’d love to hear from you.

Please apply with your most up‑to‑date CV.