Littelfuse is one of America’s Best Mid-Sized Companies (Forbes) and has been named one of the Best Places to Work in Illinois (Best Companies Group) for 11 consecutive years. With its global headquarters in Chicago, Illinois, USA, Littelfuse is a leading, global manufacturer of electronic components serving more than 100,000 end customers across industrial, transportation, and electronics end markets. We have more than 17,000 employees with operations in 15 countries. From semiconductors to sensors… switches to fuses and more… we produce billions of electronic components that help our customers empower a sustainable, connected, and safer world. In 2021, Littelfuse had net sales of $2.1 billion.

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. This role is critical to delivering innovative, self-contained smart components and systems that provide protection and control functionality to electrical systems.

The position offers a fully remote or hybrid working model, with occasional visits to the office in Cadiz.

About The Job

• Embedded Platform Development: Lead the design, development, and qualification of embedded firmware for safety-critical components and systems using 32-bit ARM microcontrollers
• Firmware Architecture: Establish robust firmware architectures for both bare-metal and RTOS-based (FreeRTOS or equivalent) platforms
• Testing & Validation: Develop and execute unit-level and system-level tests; collaborate with QA engineers to build automated, reliable test suites
• Cross-functional Collaboration: Work closely with hardware engineers, software engineers, and other stakeholders to ensure seamless integration of firmware into the overall product architecture
• Documentation: Generate comprehensive design documentation, including specifications, test plans, and reports, to facilitate communication and knowledge transfer within the team
• Regulatory Compliance: Ensure firmware designs comply with relevant industry standards, certifications, and regulatory requirements
• Source Control and Versioning: Utilize git tools for continuous integration of source code updates
  
  
  
  

About You

• 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
• Capable of working independently and as part of a team in a fast-paced environment
  
  
  
  

Bonus Skills

• Experience with embedded hardware design.
• Familiarity with simulation applications.
• Experience with safety-critical software processes (UL 1998, IEC 61508, etc.).
• Knowledge of UL/cUL/CE standards and certification processes.
  
  
  
  

Littelfuse strives to empower associate growth and development in a culture of ongoing collaboration and respect for diverse global perspectives and expertise. Our Core Values – Respect, Customer Focus, Agility, Collaboration – support us in our mission to improve the safety, reliability, and performance of our customers’ products that use electrical energy.

We are an equal opportunity employer that takes pride in giving every associate the means and courage to make a difference – everywhere, every day.

We offer a variety of benefits, including accident insurance, work from home, flexible working hours as well as development opportunities like internal Lean Six Sigma Certification.