Principal Electrical Engineer

ON.energy • Houston, TX

6d

About The Position

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

Role Overview: The Principal Electrical Engineer (Product/Hardware) is the supreme technical authority for ON.energy’s hardware ecosystem. This role is responsible for the overarching technology roadmap of multi-megawatt Battery Energy Storage Systems (BESS) and high-voltage UPS systems. You will lead the next-generation architecture of 1500VDC topologies and medium-voltage (MV) grid integrations, ensuring perfect, zero-transfer-time uptime for the world’s largest hyperscale AI data centers.

Requirements

• Master’s or Ph.D. in Electrical Engineering with a heavy specialization in Power Electronics or Utility Power Systems.
• 10 to 15+ years of definitive engineering leadership in utility-scale energy storage, high-voltage data center substations, or large-scale industrial grid tie-ins.
• Extensive experience modeling battery sizing, degradation lifecycles, and validating how EMS/SCADA plant controllers communicate (via Modbus/DNP3) with localized hardware components.
• Mastery of advanced power system analysis tools (like ETAP, SKM, or PSCAD) to oversee complex short-circuit, protective device coordination, harmonic distortion, and arc flash studies.
• Deep history of physically leading products through NRTL (Nationally Recognized Testing Laboratories like UL, CSA, Intertek) certification programs, specifically regarding thermal runaway testing ( UL 9540A ).
• Proven track record of presenting complex technical concepts, risk mitigations, and design optimization strategies directly to C-suite leadership and enterprise cloud/hyperscale clients.

Nice To Haves

• An active Professional Engineer (PE) License is highly preferred.

Responsibilities

• Define the standard product topologies for modular, utility-scale power platforms.
• Serve as the company's leading Subject Matter Expert (SME) on complex ISO/RTO grid codes (such as ERCOT, PJM, and CAISO).
• Orchestrate how the hardware behaves during transient grid events and voltage ride-through testing.
• Establish strategic technical partnerships with Tier-1 battery (e.g., CATL, Sungrow) and Power Conversion System (PCS) OEMs.
• Define the custom procurement specifications that OEMs must meet to fit ON.energy's product stack.
• Act as the highest engineering escalation point for critical root-cause analysis (RCA) regarding power electronics failures, thermal anomalies, or major system interactions in the field.
• Partner with compliance divisions to dictate the testing, listing, and certification roadmaps (such as UL 9540, UL 1741, and NFPA 855) for all new product introductions (NPI).
• Drive engineering excellence across the organization, mentoring senior electrical, controls, and project engineers to scale the technical capability of the team.

Benefits

• Competitive salary + annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)
• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy

What This Job Offers

• Job Type: Full-time
• Career Level: Principal