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.
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.
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
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
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.
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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
- 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
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
