Principal Electrical Engineer

<div class="content-intro"><p>ON.energy<span class="Apple-converted-space">&nbsp;</span>is setting the standard for large load interconnection. ON’s patented AI UPS™ is a medium-voltage UPS that serves as a firewall, protecting the data center from the grid, and the grid from the data center.&nbsp;With multiple gigawatts currently under construction, we are enabling grid-safe data centers.&nbsp;</p></div><div> <p>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.<br><br><br><strong>Role Overview</strong></p> </div> <p>The <strong>Principal Electrical Engineer (Product/Hardware)</strong> 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.</p> <p><strong>Key Responsibilities (What Changes at the Principal Level)</strong></p> <ul> <li><strong>Architectural Ownership:</strong> Define the standard product topologies for modular, utility-scale power platforms. You choose the underlying electrical framework for how the next generation of power electronics, transformers, and switchgear seamlessly combine.</li> <li><strong>Grid Interconnection &amp; ISO Authority:</strong> Serve as the company's leading Subject Matter Expert (SME) on complex ISO/RTO grid codes (such as ERCOT, PJM, and CAISO). You orchestrate how the hardware behaves during transient grid events and voltage ride-through testing.</li> <li><strong>Strategic Vendor &amp; OEM Selection:</strong> Establish strategic technical partnerships with Tier-1 battery (e.g., CATL, Sungrow) and Power Conversion System (PCS) OEMs. You define the custom procurement specifications that OEMs must meet to fit ON.energy's product stack.</li> <li><strong>Ultimate Escalation Point:</strong> Act as the highest engineering escalation point for critical root-cause analysis (RCA) regarding pow