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 Sr. Product Engineer, you will be responsible for developing, modifying, and evaluating engineering solutions to fulfill product requirements for transformers, contactors, transfer switches, and temperature sensors. Reporting to the R&D Engineering team, you will support product development, enhancements, validation activities, and technical problem-solving by collaborating with cross-functional teams. You will ensure products meet design specifications, quality requirements, and customer expectations through effective engineering practices and continuous improvement initiatives.

About the Job:

• Develop, modify, and evaluate product design options to support product development and product enhancements.

• Collaborate closely with manufacturing teams to troubleshoot and resolve technical issues, product deviations, and engineering challenges.

• Prepare project reports, perform product and data analysis, and define technical specifications.

• Support project management activities, including project planning, scheduling, and execution tracking.

• Create and maintain technical documentation, including Bill of Materials (BOM), engineering drawings, and product specifications.

• Define and support testing protocols and ensure product validation plans are executed according to requirements.

• Review, approve, reject, or modify engineering changes related to BOMs, drawings, and product specifications.

• Support product compliance activities related to engineering standards and third-party agency approvals.

About You:

• Bachelor’s degree in Electrical, Mechanical, or Electromechanical Engineering.

• 2–5 years of experience in electrical-mechanical product design or engineering development (experience with transformers, contactors, or relays is preferred).

• Experience supporting assembly manufacturing processes and project management activities.

• Strong knowledge of engineering change processes and product development practices.

• Experience with third-party agency approval processes and standards such as UL, CSA, and CCC.

• Intermediate to advanced CAD experience (Inventor or SolidWorks) and knowledge of GD&T.

• Strong analytical and problem-solving skills.

• Excellent communication skills and ability to work effectively in cross-functional teams.

• High attention to detail and commitment to quality.

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 — Customer Focus, Teamwork, Results-Driven, Integrity, and Innovation — support us on our mission to improve the safety, reliability, efficiency, and performance of our customers' products and systems. 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.