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. 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. 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.

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. Develop and execute protection system component and system qualification and reliability test plans. Provide regular project updates as part of the overall project planning and execution.

About youMS in Electrical Engineering, Computer Science or BS in Electrical Engineering, Computer Science with equivalent experience. 10+ years of hands‐on experience designing embedded firmware for 32‐bit/64‐bit ARM architectures, including experience with bare‐metal and RTOS based developments (Free RTOS, Zephyr).

Experience developing firmware for safety critical applications,



including the ability to support product compliance testing. Littelfuse strives to empower associate growth and development in a culture of ongoing collaboration and respect for diverse integral perspectives and expertise.

Our Core

Values – We Care, We Succeed With Our Customers, We Own The Outcome – support us in our mission to improve the safety, reliability, and performance of our customers' products that use electrical energy. LI-EW1 At Littelfuse, we support employee growth and development. competitive compensation and benefitsperformance‐based incentivesflexible work arrangementsdevelopment opportunitiesOur humble roots date back to 1927, where, in the back of a garage on Chicago's northside, our founder, Edward Sundt, developed a small, fast‐acting, protective fuse for use in sensitive test meters. Sundt wanted to call his new company producing these small fuses, "Little Fuse," but wasn't allowed to trademark two such common words.

With the ever‐evolving electrification and electronification of customer applications, our product technologies are closely linked to sustainable applications such as electric vehicles and EV charging infrastructure, renewable energy and energy storage, factory automation, power management and more. Now more than ever, our bright and talented people are a strategic advantage for the company. From the production line to the engineering lab, the office or distribution center, Littelfuse people are an important part of a diverse, talented team of the best and brightest in the industry.

While

Littelfuse has experienced tremendous growth in recent years, we still maintain a small‐company, entrepreneurial approach where your efforts will drive our culture, our business, and the overall success of the organization. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, gender identity, sexual orientation, disability, protected veteran status, and/or any other protected class under federal, state, or local law.

📌 Firmware Engineer - Hybrid Remote (San Sebastián)
🏢 Littelfuse
📍 San Sebastián