Test Engineer - R&D

About the company

On.Energy is a Miami-headquartered independent power producer that develops, integrates and operates AI-driven battery energy storage systems across the Americas.

About this role

<div class="content-intro"><p>ON.energy<span class="Apple-converted-space">&nbsp;</span>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 software,<span class="Apple-converted-space">&nbsp;</span>ON.energy<span class="Apple-converted-space">&nbsp;</span>develops projects worldwide that set new benchmarks for resilience.</p></div><h3>Role Summary</h3> <p>Our Research &amp; Development team is looking for a hands-on Test Engineer to join our Houston team. This is a versatile, growth-oriented role for an engineer who wants to build a broad foundation across testing, design, and field work.</p> <p>You will support our Test Engineering team in designing, integrating, and executing tests for state of the art power conversion systems,&nbsp; energy storage systems, and control architectures in high-stakes, advanced applications as part of ON.energy's Research and Development group. You will also contribute to electrical design deliverables and participate in the assembly, integration, troubleshooting, and testing of equipment in a laboratory environment.</p> <p>The ideal candidate is curious and adaptable—comfortable moving between a lab bench, a CAD tool, and physical equipment on the same day. You should be eager to learn new tools and technologies, including simulation and programming platforms such as MATLAB/Simulink, PLC programming, and Hardware-in-the-Loop (HIL) systems, while being comfortable working directly with electrical and test equipment up to 2000Vdc and 1000Vac.</p> <p>We value drive, curiosity, and a willingness to take on new challenges as much as years of experience. This role is an opportunity to develop a broad engineering skill set while working on advanced power conversion and energy storage technologies.</p> <h3>Responsibilities:</h3> <p><strong>Laboratory Validation</strong></p> <ul> <li>Support the development and execution of test procedures for high-power power electronic converters and energy storage systems.</li> <li>Operate laboratory equipment such as oscilloscopes, multimeters, power analyzers, power supplies, generators, and load banks to perform functional, performance, and stress testing.</li> <li>Identify and reproduce edge-case failures in controlled laboratory environments and analyze test data to support hardware and software improvements.</li> <li>Execute functional and performance tests against product requirements, documenting results in accordance with applicable safety standards and laboratory procedures.</li> </ul> <p><strong>Documentation</strong></p> <ul> <li>Prepare and maintain single-line diagrams (SLDs), electrical calculations, technical reports, and bills of materials (BOMs).</li> <li>Support component selection for batteries, BMS, inverters, protection devices, and related electrical components.</li> <li>Translate laboratory findings and test procedures into field-ready commissioning and technical documentation, lessons learned, application notes, and reports.</li> <li>Interact with component vendors to properly apply their products and resolve non-conformance issues identified in the lab.</li> </ul> <p><strong>Hands-On Field Work</strong></p> <ul> <li>Participate in, and oversee technician support to, install, connect, configure, and reconfigure laboratory and field equipment.</li> <li>Provide hands-on technical support during equipment integration, laboratory testing, troubleshooting, and commissioning activities.</li> <li>Support field testing and commissioning activities as required, including troubleshooting equipment and validating system performance.</li> </ul> <p><strong>Learning and Growth</strong></p> <ul> <li>Develop proficiency in engineering tools and platforms such as MATLAB/Simulink, PLC programming, and Hardware-in-the-Loop (HIL) systems.</li> <li>Build knowledge of power electronics, BESS controls, Grid-Following (GFL), and Grid-Forming (GFM) applications through hands-on testing and project work.</li> <li>Progress toward greater ownership of test design, electrical design deliverables, troubleshooting, and technical validation.</li> </ul> <h3>Required Experience</h3> <div data-ogsc="rgb(0, 0, 0)"> <ul> <li>Bachelor's degree in Electrical Engineering, Electro-Mechanical Engineering, or a related field.</li> <li>1 to 2 years of experience in design, integration and testing of electrical installations. Strong entry-level candidates with internship or academic project experience and a demonstrated willingness to learn will be considered.</li> <li>Foundational knowledge of power electronics (inverters/rectifiers) and an interest in the bulk power systems, BESS, and other grid-enhancing technologies.</li> <li>Ability to read electrical diagrams and prepare technical documentation.</li> <li>Familiarity with relevant standards (UL, NEC, IEEE, and similar).</li> <li>Willingness to perform hands-on physical work in a laboratory environment.</li> <li>Able to work 100% on-site in Houston, Texas.</li> </ul> <p><strong>Preferred Experience</strong></p> <ul> <li>Experience operating laboratory test equipment, including oscilloscopes, multimeters, power analyzers/meters, load banks, power supplies, and generators.</li> <li>Exposure to MATLAB/Simulink or other engineering simulation tools.</li> <li>Proficiency with AutoCAD or similar electrical drafting/design software.</li> <li>Basic knowledge of Hardware-in-the-Loop (HIL) testing and simulation.</li> <li>Basic understanding of SCADA systems and industrial communication protocols such as Modbus TCP/IP.</li> <li>Basic scripting or programming