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.
The Hyperscale Datacenter Senior Electrical Engineer is the senior electrical authority for ON.energy's presence at hyperscale, colocation, enterprise, and AI-focused data centers. This role is focused on data center electrical engineering, while maintaining utility-interface fluency to translate customer, operator, substation, and site-infrastructure requirements into deployable product requirements, interfaces, and reference electrical designs.
Key Responsibilities
Reference Architectures & System Definition
- Inform the end-to-end electrical reference architectures for ON.energy products across hyperscale, colocation, enterprise, and AI factory topologies LV and MV distribution, data center substation interfaces, and next-generation 800 Vdc designs.
- Define single-line diagrams, redundancy models, substation interface assumptions, and fault-tolerance strategies for UPS, BESS, PCS, microgrid, and EMS integration.
- Establish and enforce Interface Control Documents (ICDs) between ON.energy equipment and upstream utility, downstream IT load, and site controls.
Requirements Engineering
- Own the requirements traceability matrix from customer SOW to system architecture to subsystem to component test.
- Define compliance boundaries against applicable standards such as TIA-942, ASHRAE TC 9.9, and IEC 62040.
Customer & Ecosystem Engagement
- Act as the technical face to hyperscale, colocation, and AI infrastructure customers throughout new product development.
- Lead architecture reviews with project engineering teams, data center operators, and chip / server OEMs.
- Represent ON.energy in industry working groups and codify insights into technology roadmaps.
Product & Technology Roadmap
- Inform the architectural roadmap for ON.energy product architectures.
- Evaluate emerging DC power distribution, solid-state transformer, and grid-interactive architectures; recommend build / buy / partner strategies.
- Own vendor evaluation and technology partner scorecards from a systems-fit perspective.
Experience & Requirements
- Education: B.S. in Electrical Engineering, Power Systems Engineering, or related field required. M.S. preferred; PhD acceptable where paired with substantial applied data center electrical design experience.
- Experience: 5+ years in data center electrical systems, mission-critical facilities, hyperscale infrastructure, or A&E engineering serving hyperscale / colocation customers.
- Domain Depth: Hyperscale and colocation electrical topologies from utility service entrance, data center substation design, MV/LV distribution, UPS and BESS integration, redundancy strategy, fault isolation, and server rack PDU interface requirements.
Preferred Experience
- Architected power delivery for AI training clusters (>100 kW / rack, liquid-cooled, coincident load dynamics).
- Prior work as a hyperscaler owner's engineer, colocation infrastructure lead, or MEP principal for mission-critical facilities.
- Published contributions to OCP, Uptime, IEEE PES, or CIGRE.
- Professional Engineer (PE) license preferred, especially where paired with hands-on data center, substation, or mission-critical electrical design ownership.
- U.S. Person status, or ability to support DOE / national-lab collaborations where U.S. Person eligibility is required.
For US-based roles - What you’ll 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 you’ll 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: ON.energy 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 recruitment@onenergystorage.com
- Benefits vary by role and location and are subject to change.
- Locations
- Houston, Texas, United States
- Education
- bachelor degree and postgraduate degree
- Experience
- 5+ years