Lead Solutions Systems Architect

About the Role Littelfuse is seeking a Lead Solutions Systems Architect to drive the system architecture and application strategy for our semiconductor solutions in the 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) designs. You will 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, and 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 We're Looking For

• 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), and Semiconductor applications.
• Strong expertise in system-level power conversion architectures; inverters, converters, and grid-connected systems.
• Expertise in 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 UL 9540, UL 1741, IEC 62933, and grid interconnection requirements.
• Experience presenting at technical conferences or publishing industry papers.

Nice to Have

• Experience with utility-scale BESS or PCS in real-world deployments.
• Hands-on experience with SST concepts and next-generation energy conversion technologies.

Compensation & Benefits

• Salary Range: USD 123,100 - 190,780 per year.
• 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.