On.Energy is a Miami-headquartered independent power producer that develops, integrates and operates AI-driven battery energy storage systems across the Americas.
<div class="content-intro"><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.</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>Location preference: Houston, Miami, Virginia or Remote</p> </div> <p><strong>The Role</strong></p> <p>The Manufacturing Engineer owns the "design-to-line" translation for On.Energy's integrated products — turning BESS enclosures, power conversion equipment, and UPS/microgrid assemblies into repeatable, scalable, manufacturable builds. You will define assembly processes, tooling, work instructions, and test checkpoints for products built both in-house and at contract manufacturers (CMs), and you will drive the continuous improvement of yield, cycle time, and cost.</p> <p>This role sits at the intersection of electrical, mechanical, and controls disciplines. You should be comfortable moving between a battery module's electrical interfaces, a switchgear/UPS cabinet's power path, and the mechanical fit-up of an integrated enclosure — and equally comfortable on the shop floor solving a real build problem.</p> <p> </p> <p><strong>What You'll Do</strong></p> <ul> <li>Develop and document manufacturing processes, assembly sequences, and standard work instructions for BESS enclosures, DC subsystems, power conversion systems (PCS), and medium-voltage UPS/microgrid assemblies.</li> <li>Lead Design for Manufacturing and Assembly (DFMA) reviews with product and design engineering to improve manufacturability, reduce part count, and drive down cost before designs are released.</li> <li>Define and validate station-level requirements: workstations, tooling, fixtures, torque and crimp specs, cabling and busbar routing, and material flow across the line.</li> <li>Establish production readiness and manufacturing-readiness milestones for new products and product changes, including in-process (IPQC) and end-of-line (EOL) test checkpoints.</li> <li>Specify and commission functional and safety test procedures — insulation/dielectric (hipot), continuity, BMS communication, PCS/UPS functional test, and integration with On.Command™ controls and telemetry.</li> <li>Partner with contract manufacturers on process transfer, first-article inspection (FAI), production ramp, and ongoing process control; travel to CM and field sites as needed.</li> <li>Drive root-cause analysis (8D, 5-Why, fishbone) on quality escapes and line stoppages, and implement corrective/preventive actions.</li> <li>Lead continuous-improvement initiatives using Lean and Six Sigma methods (value-stream mapping, kaizen, SPC) to improve yield, throughput, and cost per unit.</li> <li>Own engineering change management (ECN/ECO) from the manufacturing side, including bill-of-material (BOM) accuracy, routings, and configuration control in the ERP/PLM system.</li> <li>Support production capacity planning, line balancing, and takt-time analysis to meet build schedules.</li> <li>Champion a safety-first culture on the floor: LOTO, arc-flash and high-voltage/medium-voltage safe work practices, and ergonomic workstation design.<br><br></li> </ul> <p><strong>What You'll Bring</strong></p> <ul> <li>Bachelor's degree in Mechanical, Electrical, Manufacturing, or Industrial Engineering (or equivalent experience).</li> <li>3+ years of manufacturing/process engineering experience with electromechanical products — energy storage, power electronics, UPS, switchgear, electric vehicle, or similar high-voltage/high-power hardware strongly preferred.</li> <li>Hands-on knowledge of assembly processes for electrical cabinets and enclosures: wiring/harnessing, busbar and cable termination, connectorization, and panel build.</li> <li>Working understanding of power systems fundamentals — DC battery systems, PCS/inverters, and AC power distribution/UPS — and the safety practices that go with them.</li> <li>Proficiency with DFMA principles, GD&T, and reading electrical schematics and mechanical drawings.</li> <li>Experience creating work instructions, process FMEAs, control plans, and test procedures.</li> <li>Familiarity with Lean Manufacturing and Six Sigma (Green Belt or higher a plus).</li> <li>Experience working in an ERP/PLM environment (e.g., SAP, Oracle, Arena, Windchill) for BOMs, routings, and change control.</li> <li>Strong problem-solving skills, disciplined documentation habits, and the ability to work cross-functionally across engineering, quality, supply chain, and operations.</li> <li>Willingness to travel (typically up to ~25%) to contract manufacturers, suppliers, and project/field sites.</li> </ul> <p><strong>Nice to Have</strong></p> <ul> <li>Experience with battery module/pack integration, BMS interfaces, and thermal management.</li> <li>Experience with medium-voltage equipment and microgrid or UPS integration.</li> <li>Knowledge of releva