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.Senior Commissioning EngineerLocation: Field-Based / Remote in United States (with travel to active project sites)Travel Requirement: ~80%Position Type: Full-Time, Salaried (Exempt) + GSA Rate per diem eligible while travelingReports To: Senior Commissioning ManagerOverviewThe 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 ResponsibilitiesLeadership & Technical OversightProvide 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 ManagementAct 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 & ComplianceEnsure 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 QualificationsExtensive 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 QualificationsSafety 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 SkillsStrong 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.Benefits for US‑based RolesCompetitive base salary + annual performance‑based bonus eligibilityMedical, dental, and vision insurance401(k) with company matchPaid time off and company holidaysGSA Rate Per diem eligibility while traveling to project sitesBenefits for Mexico‑based RolesCompetitive salary + annual performance bonus eligibilityChristmas Bonus (Aguinaldo): 30 daysMajor medical expenses and life insurancePaid time off and holidays (per local policy)For All RolesProfessional development and growth opportunitiesOpportunity to grow with a mission‑driven team shaping the future of clean energyBenefits vary by role and location and are subject to change.Equal Opportunity & AccommodationsON.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.#J-18808-Ljbffr