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 global 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 Job:
- Develop 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 required to evaluate suppliers and support production ramp up.
- 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 you:
- MS 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 with communication protocols (SPI, I2C, UART, Modbus, CAN, Ethernet).
- Working knowledge of cryptography, algorithms and encryption for embedded devices.
- Hands on experience with hardware bring-up, debugging tools (JTAG, oscilloscopes, logic analyzers).
- Experience developing firmware for safety critical applications,including the ability to support product compliance testing.
- Demonstrate an entrepreneurial spirit, willingness to experiment and be able to manage ambiguity.
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 – 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.
We are an equal-opportunity employer that takes pride in giving every associate the means and courage to make a difference – everywhere, every day.
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At Littelfuse, we support employee growth and development. Guided by our culture principles, our teams work together to deliver value for customers and make a positive impact in the communities where we operate. We are an equal opportunity employer committed to fostering an inclusive workplace where everyone has the opportunity to grow and contribute. We offer competitive compensation and benefits, performance-based incentives, flexible work arrangements, and development opportunities.
Skills Required
- MS in Electrical Engineering or Computer Science, or BS in Electrical Engineering or Computer Science with equivalent experience
- 10+ years of hands-on embedded firmware design experience for 32-bit/64-bit ARM architectures
- Experience with bare-metal and RTOS-based development, including FreeRTOS and Zephyr
- Experience with SPI, I2C, UART, Modbus, CAN, and Ethernet communication protocols
- Working knowledge of cryptography, algorithms, and encryption for embedded devices
- Hands-on experience with hardware bring-up, JTAG, oscilloscopes, and logic analyzers
- Experience developing firmware for safety-critical applications and supporting product compliance testing
- Self-motivated, entrepreneurial, willing to experiment, and able to manage ambiguity
Littelfuse Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Littelfuse and has not been reviewed or approved by Littelfuse.
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Retirement Support — A 401(k) plan includes a company match with an additional annual contribution, with plan details also referenced in corporate filings. This structure indicates dependable retirement support across U.S. roles.
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Wellbeing & Lifestyle Benefits — A Lifestyle Spending Account and tuition reimbursement, plus wellness resources and an Employee Assistance Program, expand the package beyond core insurance. Development programs such as Lean Six Sigma certifications reinforce a holistic rewards mix.
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Healthcare Strength — Core medical, dental, and vision coverage are standard and described as solid and workable. Coverage breadth is supported globally with EAP access.
Littelfuse Insights
What We Do
Littelfuse is an industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 15 countries, and with 17,000 global associates, we partner with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, our products are found in a variety of industrial, transportation, and electronics end markets—everywhere, every day. Headquartered in Chicago, Illinois, United States, Littelfuse was founded in 1927. View our broad and deep product portfolio: https://www.littelfuse.com/ Littelfuse has had a long-standing commitment to ensuring a diversified workforce through equal employment opportunities. Maintaining a diversified workforce is critical to the success of our organization. Each associate receives equal employment opportunity regardless of race, color, religion, creed, sex (with or without sexual conduct), marital status, national origin, citizenship, ancestry, age, physical or mental disability, medical condition, order of protection status, military status, sexual orientation, gender expression or identity, genetic information, unfavorable discharge from military service, and any other protected class under federal, state or local law
