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. Littelfuse is seeking a Lead Solutions Systems Architect to drive the system architecture and application strategy for our semiconductor solutions within the rapidly growing Battery Energy Storage Systems (BESS) market. In this strategic role, you will define how our technologies are integrated into utility-scale energy storage solutions, including emerging Solid State Transformer (SST) architectures. You'll collaborate with customers, Product Management, R&D, and Application Engineering to shape next-generation solutions that accelerate innovation and enable the future of energy. What You'll Do Define and evolve system-level architectures for Battery Energy Storage Systems (BESS), including: Power Conversion Systems (PCS) Inverter topologies Protection strategies Emerging Solid State Transformer (SST) designs Translate customer requirements, market trends, and competitive insights into scalable solution roadmaps. Partner with Product Management and R&D to define future semiconductor product requirements. Serve as the technical authority during customer engagements with OEMs and system designers. Develop reference architectures, technical collateral, and solution blueprints. Support Application Engineering and Field Application Engineers on complex customer challenges. Influence technology strategy, design wins, and long-term business growth. Represent Littelfuse through technical presentations, publications, and industry conferences. What You'll Bring Required

Qualifications

Bachelor's or Master's degree in Electrical Engineering, Power Electronics, or a related field. 8+ years of experience in: Power Electronics Battery Energy Storage Systems (BESS) Semiconductor applications Strong expertise in: System-level power conversion architectures Inverters, converters, and grid-connected systems Semiconductor technologies including Si, SiC, and GaN

Experience

collaborating across customers, Product Management, and R&D. Demonstrated success influencing technical direction with OEMs or strategic customers. Expertise with multi-level inverter topologies (NPC, ANPC, etc.).

Preferred Qualifications

Experience

with utility-scale BESS or Power Conversion Systems (PCS). Knowledge of Solid State Transformers (SST) or next-generation energy conversion technologies.

Experience

developing system architectures or application roadmaps. Proficiency with PLECS, MATLAB/Simulink, or similar modeling tools. Familiarity with standards such as UL 9540, UL 1741, IEC 62933, and grid interconnection requirements.

Experience

presenting at technical conferences or publishing industry papers. Littelfuse is an equal opportunity employer committed to empowering every associate to make a difference — everywhere, every day. We offer a comprehensive benefits package, including: Medical, dental, and vision coverage 401(k) with company match and annual contribution Paid time off and 11 holidays Flexible and remote work options $850 Lifestyle Spending Account Tuition reimbursement (up to $20,000) Lean Six Sigma certification and career development opportunities Life, disability, and voluntary insurance options Artificial Intelligence (AI) tools may be used in some portions of the candidate review process for this position; however, all final employment decisions will be made by a person. #LI-FFP Artificial intelligence (AI) tools may be used in some portions of the candidate review process for this position, however, all final employment decisions will be made by a person. Salary Range: $123,100 - $190,780 The salary offered will vary depending on your location, job-related skills, knowledge, and experience. 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.