Principal Applications Engineer

About The Opportunity

Our client, an innovative semiconductor company, is seeking a Principal Applications Engineer with deep expertise in power MOSFETs and high-performance power converter design. This senior individual contributor will serve as the technical authority supporting strategic customer designs utilizing advanced 150V-650V MOSFET technology in demanding applications exceeding 10 kW. The ideal candidate will work closely with key customers, develop reference designs, influence next-generation product development, and serve as the voice of the customer by collaborating across engineering, reliability, and product marketing teams.

Key Responsibilities

• Serve as the primary technical advisor for strategic customers designing high-performance power electronics solutions.
• Develop, document, and support high-efficiency reference designs for applications including:
  • Electric vehicle (EV/HEV) traction inverters and onboard chargers
  • Industrial motor drives and servo drives
  • Phase-Shifted Full-Bridge (PSFB) converters
  • LLC resonant converters (half-bridge and full-bridge)
  • Totem-pole Power Factor Correction (PFC) and other high-frequency converter topologies
• Perform detailed power loss analysis, thermal modeling, and efficiency optimization using industry-standard simulation tools.
• Design and validate advanced gate-drive circuits for fast-switching power devices, including protection and switching optimization techniques.
• Conduct customer design reviews, technical training sessions, troubleshooting, and on-site application support.
• Develop technical documentation including application notes, white papers, evaluation board guides, and competitive product analyses.
• Collaborate with design engineering, reliability, and product management teams to define future semiconductor products based on customer requirements.
• Provide technical support and mentoring to field applications engineers and distribution partners worldwide.

Required Qualifications

• Master's degree or Ph.D. in Electrical Engineering with a specialization in Power Electronics, or a Bachelor's degree with 10+ years of directly related experience.
• Minimum 8 years of hands-on experience designing switched-mode power supplies, motor drives, or high-power converter systems.
• Proven experience designing production-level systems using high-voltage MOSFETs and/or wide-bandgap technologies such as SiC MOSFETs or GaN devices.
• Demonstrated expertise with:
  • Three-phase motor drives and power inverters (10 kW or greater)
  • Phase-Shifted Full-Bridge (PSFB) converters
  • LLC resonant converter topologies
  • Totem-pole bridgeless PFC designs
• Strong understanding of:
  • Silicon and Silicon Carbide (SiC) MOSFET switching characteristics
  • High-speed PCB layout and low-inductance design techniques
  • Advanced gate-driver design, including protection features
  • High-frequency magnetic component design
• Proficiency with simulation tools such as PLECS, LTspice, PSIM, SIMPLIS, or SIMetrix.
• Experience using advanced laboratory equipment for power electronics testing and validation.
• Excellent customer-facing communication and presentation skills.
• Willingness to travel approximately 10-25%, including domestic and international travel.

Preferred Qualifications

• Previous experience with a leading semiconductor manufacturer specializing in power MOSFET, SiC, or GaN technologies.
• Published technical papers, patents, or industry presentations in power electronics.
• Familiarity with automotive and industrial qualification standards.
• Experience with digital control platforms such as TI C2000, STM32, or Microchip dsPIC.

Compensation & Benefits

• Competitive base salary.
• Equity participation.
• Comprehensive medical, dental, and vision insurance.
• 401(k) retirement plan.
• Paid time off.
• Opportunity to work on next-generation semiconductor technologies serving high-growth global markets.

Our client offers a collaborative, technically driven environment where engineers have the opportunity to influence cutting-edge semiconductor products, partner with leading global customers, and help shape the future of advanced power electronics solutions.