Littelfuse (NASDAQ: LFUS) is a diversified industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy. Headquartered in Chicago, Illinois, USA, we serve customers across industrial, transportation, and electronics markets worldwide. With approximately 16,000 employees we design and manufacture innovative technologies that support electrification, energy efficiency, and advanced automation. Our integral reach is matched by a culture that empowers innovation and long‐term growth. Guided by our principles We Care, We Succeed With Our Customers, and We Own the Outcome, we work collaboratively, think boldly, and deliver solutions that move industries forward.
As a Senior Firmware Engineer, you will be responsible for the embedded firmware architecture, design, unit level and system testing of new solid‐state components and systems. The candidate must be self‐motivated and comfortable navigating uncertainties and customer‐driven design requirements.



The role requires an understanding of the protection legacy that Littelfuse has established and the ability to collaborate across the business to draw upon that strength.
Join the team at Littelfuse that is developing new, self‐contained smart components and systems that deliver protection and control functionality to electrical systems. About the JobDevelop and qualify embedded designs as part of a safety critical component or system. Establish and execute unit level and system level tests and work with QA engineers to develop automated robust test suites.
Establish a safety critical software process that meet requirements of UL 1988, IEC 60730, IEC 61508, and ISO 26262. Develop DFMEA for safety critical components and systems. Engage with contract manufacturers or in house manufacturing to implement design, prepare design documentation, and evaluate production processes to assure components meet performance, reliability and cost targets.
Support occasional travel as r

📌 Senior Firmware Engineer (San Sebastián)
🏢 Littelfuse
📍 San Sebastián