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Lead Engineer, R&D Power Electronics

Faith Technologies · Menasha, WI · Full time

Posted Jul 16, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a power electronics system you designed or led. What were the key design challenges?

What they are checking: Whether they have led real converter or inverter work in relevant markets.

How do you choose and work with external suppliers and partners on new technology?

What they are checking: Whether they can build partnerships, which the posting names as part of the job.

How do you act as a subject matter expert across a company without becoming a bottleneck?

What they are checking: Whether they can share knowledge widely and help others grow their skills.

What would you do

A prototype is missing its efficiency target. How do you find where the losses are?

What they are checking: Whether they troubleshoot losses methodically through measurement and analysis.

Product management wants a feature your team doesn't think is ready. How do you respond?

What they are checking: Whether they can give honest technical advice while staying a good partner to the business.

About the work

How do you benchmark new components like silicon carbide devices against what you use today?

What they are checking: Whether they can characterize parts fairly on efficiency, size, cost and reliability.

How would you build a technology roadmap for power conversion products?

What they are checking: Whether they connect market needs and technology trends into a clear plan.

Walk me through the tradeoffs in choosing a converter topology for a DER application.

What they are checking: Whether they understand how topology choices affect efficiency, cost and control.

What thermal and EMI issues do you plan for early in a power electronics design?

What they are checking: Whether they consider the problems that often delay power products late in development.

What testing would you require before a new power design moves into product development?

What they are checking: Whether they have a disciplined approach to proving a technology is ready.

Practice this interview out loud.

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The full job description

As published by Faith Technologies.

You’ve discovered something special. A company that cares. Cares about leading the way in construction, engineering, manufacturing and renewable energy. Cares about redefining how energy is designed, applied and consumed. Cares about thoughtfully growing to meet market demands. And ─ as “one of the Healthiest 100 Workplaces in America” ─ is focused on the mind/body/soul of team members through our Culture of Care . Faith Technologies Inc. (FTI) is currently seeking a Lead Engineer, R&D Power Electronics to join our Product Engineering team in Menasha, WI. As a Lead Engineer within our R&D organization, you will lead the design, development, and testing of cutting-edge systems and technologies for DER and power distribution applications. Your role will focus on shaping technological roadmaps for required systems, characterizing and benchmarking technologies and components, ensuring they meet size, efficiency, performance, cost, and specification requirements. You will collaborate with cross-functional teams to develop a technology roadmap for energy, power distribution, and power conversion solutions targeting various markets. By acting as a company-wide subject matter expert, you will play a pivotal role in influencing the future of technology and product development within our organization. Additionally, you will establish partnerships with external suppliers and communicate results to key stakeholders, driving innovation and excellence in all our initiatives. About the Product Engineering Team Our Product Engineering Team sits at the intersection of innovation and execution, transforming ideas into real-world products and solutions for Excellerate Products(tm), a division of Faith Technologies Incorporated (FTI). From early concept through full-scale production, our engineers design Data Center power distribution products, Electric Vehicle charging skids, switchboards and more! With a strong focus on quality, manufacturability, and customer outcomes, we ensure every product is engineered to perform in the real world—safely, reliably, and at scale. To learn more about our products and services, visit our website: Excellerate Products – Smarter Power Solutions – FTI . MINIMUM REQUIREMENTS Education: Bachelor’s Degree in Engineering (Electrical, Mechanical, Aerospace, Chemical). Advanced degree in Engineering (Electrical, Chemical, Mechanical) or equivalent preferred. Experience: 8+ years of experience in system design, architecture, testing, or integration of various relevant energy technologies for microgrid, power generation, and energy storage • Strong understanding of renewable energy systems, including solar, wind, power conversion, and energy storage technologies. • Experience with collaboration and application of modeling for system design • Excellent problem-solving skills and the ability to work in a fast-paced environment. • Strong communication and interpersonal skills. • Strong understanding of related regulatory frameworks and industry standards related to the relevant energy technologies: Microgrid, Power generation, and Energy storage (preferred). • Knowledge of grid integration and energy management systems (preferred) . • Proven track record of leading successful projects in the renewable energy sector (preferred) . • Experience in performance modeling and simulation of microgrid power generation components, control systems, power conversion components with Matlab/Simulink, Simscape, Amesim or similar tools (preferred) . KEY RESPONSIBILITIES • Characterizes, benchmarks, and defines requirements for design, development of proof-of-concept prototypes, and testing of various components and technologies. • Characterizes size, performance, efficiency, cost, and requirements for various components and technologies used for DER and power distribution in microgrid, EV charging, and data center applications. • Develops and maintains documentation on component specifications, selection analysis, requirements, and simulation analysis. • Works closely with systems simulation and FEA/CFD engineers to communicate requirements, performance targets, and boundary conditions for modeling and simulation analysis. • Leads evaluation and benchmarking of new and competitive technologies. • Collaborates with controls software engineers to establish guidelines and performance targets for energy management systems, microgrid controllers, and other functional design. • Collaborates with cross-functional teams on power electronics system design, thermal management system design, and packaging/manufacturing design. • Collaborate with Verification & Validation team to define DVP&Rs for battery energy storage system testing. • Performs other related duties as required and assigned. The job description and responsibilities described are intended to provide guidelines for job expectations and the employee's ability to perform the position described. It is not intended to be construed as an exhaustive list of all functions, responsibilities, skills, and abilities. Additional functions and requirements may be assigned by supervisors as deemed appropriate. WORK LOCATION This role requires work to be done Onsite from our Menasha, WI office. Our onsite roles include a high level of workplace and schedule flexibility to support a healthy work-life balance. Menasha, WI offers an excellent quality of life with a low cost of living, short commute times, and a strong sense of community. Located in the heart of the Fox Valley and along Lake Winnebago, the area provides access to outdoor recreation, safe neighborhoods, and top-rated schools. Just minutes from Appleton and within easy reach of Green Bay and Milwaukee, Menasha combines small-town living with convenient access to dining, entertainment, sports, and regional travel, making it an ideal place to relocate and build a long-term career. Applicants must be authorized to work for ANY employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa at this time other than the TN1 Visa (Canadian). #LI-ONSITE How Does FTI Give YOU the Chance to Thrive? If you’re energized by new challenges, FTI provides you with many opportunities. Joining FTI opens doors to redefine what’s possible for your future. Once you’re a team member, you’re supported and provided with the knowledge and resources to achieve your career goals with FTI. You’re officially in the driver’s seat of your career, and FTI’s career development and continued education programs give you opportunities to position yourself for success. FTI is a “merit to the core” organization. We recognize and reward top performers, offering competitive, merit-based compensation, career path development and a flexible and robust benefits package. Benefits are the Game-Changer We provide industry-leading benefits as an investment in the lives of team members and their families. You’re invited to review the full list of FTI benefits available to regular/full-time team members. Start here. Grow here. Succeed here. If you’re ready to learn more about your career with FTI, apply today! Faith Technologies, Inc. is an Equal Opportunity Employer – veterans/disabled. Employment is contingent upon successfully passing a background and drug test

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