Full-time

Firmware Engineer

Posted by Hays • Spain, Andalusia, Spain

📍 Spain, Andalusia 🕒 March 03, 2026

About the Role

We are looking for a Firmware Developer with 3–4 years of experience to join their R&D team in a fast-growing startup environment. In this role, you will design and implement cutting-edge firmware for embedded systems and optical transceivers, contributing directly to the growth and success of the company.


Key Responsibilities:


  • Participate in feasibility studies and draft initial firmware architecture.
  • Collaborate with hardware and system engineers using Scrum methodology .
  • Design and implement firmware for optical transceivers, including peripheral drivers and communication interfaces (I2C, SPI, UART).
  • Implement host interfaces based on CMIS/MIS standards .
  • Develop firmware ahead of hardware availability using emulators or evaluation boards.
  • Conduct bring-up and debugging on prototypes using l...

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