# Senior Commissioning Engineer at ON.energy Senior Commissioning Engineer at ON.energy in Alpharetta, Georgia, United States; Atlanta; Houston, Texas, United States; Miami, Florida, United States; Reston, Virginia, United States; Tysons. Remote, full-time. Posted June 10, 2026. - Company: ON.energy - Location: Alpharetta, Georgia, United States; Atlanta; Houston, Texas, United States; Miami, Florida, United States; Reston, Virginia, United States; Tysons - Workplace: Remote - Job type: Full-time - Posted: 2026-06-10 - Apply: https://job-boards.greenhouse.io/onenergy/jobs/4272216009 - Source: https://jobmagic.ai/jobs/senior-commissioning-engineer-onenergy-mpaq2e ## Requirements - Extensive experience in BESS, power systems, control architecture, and commissioning. ## Description ON.energy 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. With multiple gigawatts currently under construction, we are enabling grid-safe data centers.  **Senior Commissioning Engineer**  *Project Site Lead — Mission-Critical Power & Energy Storage*  **Location: **Field-Based / Remote in United States (with travel to active project sites)  **Travel Requirement: **~80%  **Position Type: **Full-Time, Hourly (Non-exempt, eligible for OT) + GSA Rate per diem eligible while traveling +  **Reports To: Senior **Commissioning Manager  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.  **Overview**  The Senior Commissioning Engineer serves as the Project Site Lead, providing overall leadership and technical oversight of the commissioning process for ON.energy’s mission-critical, medium-voltage double-conversion UPS systems built on utility-scale BESS equipment (batteries, transformers, PCS, and controls). Leading site-based teams of 10–50 people from installation through commissioning, acceptance testing, and handover to services, the Senior Commissioning Engineer owns critical-path execution, stakeholder communication, and final commissioning sign-off for the site.  This is a senior, high-travel field leadership role for an engineer with deep BESS and power systems expertise who is equally comfortable leading a large multidisciplinary site team, interpreting a complex test plan, and serving as the customer-facing technical authority on site.  **Key Responsibilities**  **Leadership & Technical Oversight**  - Provide overall leadership and technical oversight of the commissioning process.  - Manage site-based technical teams of 10–50 people from installation through commissioning and acceptance testing, and facilitate smooth handover to services.  - Manage site-based workflow in line with critical-path demands, ensuring timely and quality delivery.  - Train and mentor junior engineers and technicians.  **Stakeholder & Project Management**  - Act as the primary point of contact between project stakeholders (Project Managers, Project Engineers, Customers, OEMs, and Vendors).  - Understand and interpret project-specific task orders, change orders, and MSAs.  - Develop and follow commissioning plans, test plans, procedures, and schedules.  **Technical Execution & Compliance**  - Ensure compliance with safety protocols, grid interconnection requirements, and regulatory standards.  - Lead root cause analysis (RCA) and high-level troubleshooting for major issues.  - Provide final commissioning sign-off and documentation.  **Required Qualifications**  - Extensive experience in BESS, power systems, control architecture, and commissioning.  - Strong background in commissioning, system integration, and grid compliance.  - Proficiency in SCADA systems, communication protocols, and power conversion systems.  - Leadership and project management experience.  - Bachelor’s degree in Electrical, Electronics, or other engineering discipline (or equivalent experience).  - Willing and able to travel up to ~80% to project sites nationwide.  **Preferred Qualifications**  - Safety certifications (OSHA 30, NFPA 70E, First Aid, CPR, AED).  - Experience leading large site teams on hyperscale data center or utility-scale BESS projects.  - Experience with medium-voltage switching and system energization.  - Familiarity with major BESS OEM platforms and SCADA protocols (DNP3, Modbus, etc).  **Soft Skills**  - Strong leadership presence; able to lead large, multidisciplinary site teams.  - Excellent stakeholder and customer communication.  - Calm under pressure in schedule-driven environments.  - Bias toward root-cause resolution, safety, and quality.  **For US-Based Roles — What You’ll Get**  - Competitive base salary + annual performance-based bonus eligibility  - Medical, dental, and vision insurance  - 401(k) with company match  - Paid time off and company holidays  - GSA Rate Per diem eligibility while traveling to project sites    **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@on.energy.  *Benefits vary by role and location and are subject to change.*      #LI-JW1 **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. - Benefits vary by role and location and are subject to change. **Agency Notice:** ON.energy does not accept unsolicited resumes from staffing agencies, search firms, or third-party recruiters. Resumes submitted without a fully executed Master Services Agreement (MSA) and a written request from an authorized member of our Talent Acquisition team will be considered the property of ON.energy. No placement fees or compensation will be paid for unsolicited candidate submissions.