Senior Firmware Engineer
LittelfuseSan Sebastián, Autonomous Community of the Basque Country, Spain
Posted February 18, 2026
Full Time
About the Company
Littelfuse is a leading, global manufacturer of electronic components serving more than 100,000 end customers across industrial, transportation, and electronics end markets.
Job Description
Join our engineering team as a Senior Firmware Engineer, where you’ll design and develop the embedded platform for our next generation of safety products.
Requirements
- Bachelor’s or master’s degree in Electrical Engineering, Computer Science, Computer Engineering, Telecom Engineering or related field
- Minimum 7 years of hands-on experience designing embedded firmware for 32-bit ARM architectures
- Strong C/C++ proficiency in embedded environments
- Proficiency in both bare-metal and RTOS-based development (FreeRTOS or equivalent)
- Proficiency in Python or other scripting languages
- Experience with communication protocols: SPI, I2C, UART, Modbus, CAN, Ethernet
- Hands-on experience with hardware bring-up and debugging tools (JTAG, oscilloscopes, logic analyzers)
- High level of verbal and written communication skills in English language
- Strong analytical skills and ability to communicate effectively with engineers, management, and customers
Benefits
- Accident insurance
- Work from home
- Flexible working hours
- Internal Lean Six Sigma Certification
