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. Reporting directly to the Sustaining Engineering Manager, sustaining engineer will be responsible for supporting product design modifications, engineering change management, and technical application support across Industrial Circuit Protection products. This role plays a key part in ensuring product integrity, supporting continuous improvement initiatives, and maintaining compliance with customer, regulatory, and manufacturing requirements. You will work closely with Operations, Quality, Engineering, Manufacturing, and external customers to implement engineering changes, resolve technical issues, support product specifications, and drive product performance improvements. The position requires strong problem-solving capabilities, technical design experience, and the ability to collaborate effectively across multiple functions.

About the Job

Lead engineering change management activities, including development of preliminary drawings, change documentation, and implementation of engineering changes. Create and maintain marked-up drawings, ensuring all technical and product information is accurately documented. Conduct feasibility reviews with Operations, Manufacturing, Quality, and Service teams to evaluate proposed product changes. Coordinate and track engineering changes through approval, implementation, and release within internal systems. Manage product deviations and engineering documentation within company systems. Clarify technical requirements for both internal and external customers related to raw materials, product designs, specifications, and certifications. Support inquiries related to product compliance requirements including ISO, IMDS, RoHS, UL, CSA, VDE, and other applicable standards. Troubleshoot product and manufacturing issues utilizing structured problem-solving methodologies. Lead root-cause investigations using tools such as 5 Whys, 8D, A3, Ishikawa Diagrams, and Six Sigma methodologies.



Support manufacturing operations by assisting with floor issues and technical problem resolution. Develop, maintain, and update product specifications, drawings, and technical documentation. Evaluate opportunities to improve product performance, reliability, manufacturability, and cost efficiency. Collaborate with cross-functional teams to ensure successful implementation of product improvements and engineering changes. Utilize engineering software and technical tools to develop product modifications and support design activities.

About You

Bachelor's Degree in Industrial Engineering, Electronic Engineering, Electrical Engineering, or a related technical discipline. Minimum of 3 years of professional experience in Product Engineering, Manufacturing Engineering, Design Engineering, Sustaining Engineering, or related engineering functions. Experience managing engineering changes and technical documentation in a manufacturing environment. Strong understanding of engineering drawing practices and product design principles. Experience supporting manufacturing operations and resolving technical product issues. Knowledge of structured problem-solving methodologies including: 5 Whys, 8D, A3, Ishikawa Diagrams, Six Sigma, Experience utilizing engineering design software such as: AutoCAD, SolidWorks, Inventor. Familiarity with product specifications, material requirements, certifications, and regulatory standards. Strong analytical and critical thinking skills. Ability to work effectively in cross-functional teams and manage multiple priorities simultaneously. Strong communication and technical documentation skills. English proficiency of at least 60% with ability to read, write, and communicate in professional environments. Proficiency with Microsoft Office applications. Self-motivated, detail-oriented, and focused on continuous improvement.

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

Littelfuse strives to empower associate growth and development in a culture of ongoing collaboration and respect for diverse global perspectives and expertise.



We are an equal opportunity employer that takes pride in giving every associate the means and courage to make a difference — everywhere, every day. #LI-MMV 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. Our 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. So, instead he went with the one-word, misspelled “Littelfuse.” For more than 95 years, Littelfuse has pioneered innovative products that help empower a sustainable, connected, and safer world. 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. Throughout our history, our people have been the foundation of our success — and that remains true today. 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. No matter where you work or what you do, your contributions will make a difference at Littelfuse — everywhere, every day. Littelfuse is an Equal Opportunity/Affirmative Action employer. 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.

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📌 Sustaining Enginner (Piedras Negras)
🏢 Littelfuse
📍 Piedras Negras