Senior Embedded Software Engineer

Freelance Embedded Software Engineer (Medical Devices)

Location: Southern Germany (Hybrid)

Contract: 12 Months Initial

Start: ASAP

Industry: Medical Technology

Project

A specialist medical device manufacturer is investing in the redevelopment of a portable diagnostic and therapy platform used in clinical environments. The project focuses on modernising an existing embedded architecture and introducing improved connectivity, cybersecurity, and long-term maintainability across a new generation of products.

You'll join a cross-functional team of electronics, software, systems, and verification engineers, with a particular focus on real-time embedded firmware and secure device communications within a regulated environment.

Responsibilities

• Develop embedded software in C/C++ on ARM Cortex-M platforms
• Design low-level firmware, device drivers, and communication interfaces
• Implement and optimise RTOS-based functionality (FreeRTOS/Zephyr)
• Integrate sensors, peripherals, and external modules
• Support secure bootloaders and firmware update mechanisms
• Troubleshoot hardware-software interactions and system-level issues
• Contribute to verification activities and technical documentation

Required Experience

• Strong Embedded C/C++ development background
• Experience with ARM microcontrollers
• RTOS experience (FreeRTOS, Zephyr or similar)
• Good knowledge of SPI, I2C, UART, CAN or Ethernet
• Experience debugging hardware-near software
• Familiarity with Git and modern development workflows

Desirable

• Medical device experience
• IEC 62304 knowledge
• Secure firmware or cybersecurity exposure
• BLE or wireless connectivity projects
• STM32 development experience