Principal Power Electronics Engineer

is building the backbone of energy and AI infrastructure powering grid-safe data centers and mission-critical facilities. The company supplies and operates hyperscale power systems that solve the toughest resilience challenges delivering custom solutions for AI data centers mission-critical facilities and front-of-the-meter assets. ON recently announced a 5GW partnership with 3GW currently under construction across multiple hyperscale data center campuses. With patented technology and proprietary softwaredevelops projects worldwide that set new benchmarks for resilience.

Were looking for a Principal Power Electronics Engineer to set the technical direction for the grid-connected inverters at the heart of AI UPS product family. This is the senior technical voice for power electronics on the product team: you architect the converter and controls approach resolve the hardest engineering trade-offs set the engineering standards others work to and represent inverter engineering externally to vendors customers certifying bodies and the broader industry. You are fluent in power electronics its controls (grid-following and grid-forming) and BESS integration ideally with UPS experience in mission-critical applications and you own the inverter technical thread from proposal through FAT commissioning and field feedback for MW-scale systems.

Key Responsibilities

Architecture & technical authority

• Own the grid-connected-inverter product architecture and converter-controls strategy grid-following and grid-forming operation current limiting and dynamic grid support and the technical roadmap across concurrent product cycles.

• Define the engineering standards design rules and review gates the team works to; act as the final technical authority on the inverter change baseline.

• Serve as the companys SME for grid-code and UPS performance compliance IEEE 2800 IEEE 1547 UL 1741 IEC 62040-3 ERCOT ride-through and set the inverter qualification / type-test program acceptance criteria and current-limit / short-circuit and data-evidence requirements suppliers must meet.

• Act as the ultimate escalation point for inverter root-cause analysis (current-limit post-fault recovery thermal control instability) and drive corrective design changes.

• Mentor senior power-electronics controls and project engineers to scale the teams technical capability.

Vendor management & supply strategy

• Own the strategic inverter vendor / OEM relationships and decide their architecture sole-source vs dual-source co-development depth and IP boundaries.

• Set and enforce the inverter technical qualification process; run the highest-stakes design reviews and resolve the highest-stakes vendor escalations personally.

• Oversee vendors through design FAT serial production and post-deployment corrective action; own procurement technical specifications and acceptance.

• Maintain vendor scorecards and drive continuous improvement across the supply base.

Proposal documentation & project support

• Support business development with technical proposals SLDs and GAs that meet the customers needs and compile inverter technical information packages for the project engineering team.

• Co-lead review and validation of inverter-related topics during project execution; maintain technical documentation including as-built drawings.

• Support integration of the inverter with the EMS Plant Controller and SCADA layers.

Product development

• Capture design-improvement feedback across the design commissioning and O&M phases and turn it into product changes.

• Recommend design approaches and vendors for the main equipment; participate in product design sprints and in the products commissioning phase.
  
  

Required Qualifications & Skills

• Bachelors degree in Electrical Engineering Power Electronics or a closely related technical field; MS preferred.

• 10 years of hands-on power-electronics engineering with a demonstrated record of operating with minimal direction in a senior technical role.

• Architecture-level decision authority on previous grid-connected-inverter power-electronics or BESS equipment youve made the trade-off calls others built around.

• Proven system-level design of MW-scale power-electronics equipment with deep converter-controls depth (grid-following / grid-forming current limiting protection).

• Fluency producing and reviewing SLDs GAs schematics and panel layouts; expert with AutoCAD or equivalent E-CAD.

• Standards authority: UL 1741 IEEE 1547 IEEE 2800 IEC 62040-3 NFPA 855 / UL 9540 context; modeling with EMT tools (PSCAD MATLAB / Simulink PLECS).

• Strong track record running strategic vendor / OEM relationships through design FAT serial production and post-deployment escalation.

• Excellent written and verbal communication specs technical positions design-review leadership and board-level briefings.

• Willing to travel up to 2530% for FAT inspections site commissioning customer engagements and vendor reviews.
  
  

Preferred Experience

• Direct experience with data center / UPS / mission-critical power or utility-scale BESS at the architecture level.

• Grid-forming inverters advanced power-semiconductor (e.g. SiC) designs and weak-grid / low-SCR EMT and impedance-stability validation.

• History of leading products through NRTL certification (UL CSA Intertek) and FAT / commissioning.

• Active Professional Engineer (PE) license; involvement in standards bodies (IEEE UL IEC NFPA); patents or peer-reviewed publications.

For US-based roles - What youll get:

• Competitive salary annual performance-based bonus eligibility
• Medical dental and vision insurance
• 401(k) with company match
• Paid time off and company holidays

For Mexico-based roles - What youll get:

• Competitive salary annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For all roles:

• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy
• Equal Opportunity: is committed to equal employment opportunity and to maintaining a work environment free of harassment discrimination or retaliation.
• Accommodations: If you need an accommodation during the application process email
• Benefits vary by role and location and are subject to change.

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