On.Energy is scaling fast. We’re building critical infrastructure at the center of the global energy and AI transformation. With a multi-gigawatt pipeline across the U.S. and Latin America, and hyper-scale data center deployments already underway, we’re on track to become one of the most important energy technology companies of this decade.

Location:  This is a remote/site-based role with the ability to travel and be located at project sites across the U.S. (many projects in Texas).

We're looking for highly skilled and motivated Senior Commissioning Engineers to join our best in class team and play a critical role in bringing complex projects to life. In this position, you'll be responsible for the leading the stages of construction and installation, ensuring that all systems and equipment are installed, tested, and operate according to specifications and client requirements.

As the Senior Commissioning Engineer at On.Energy, you will:

• Take ownership of the overall leadership and technical oversight of the commissioning process.

• Manage site-based technical team, 10-50 people, from installation through commissioning and acceptance testing, and facilitate smooth handover to services.

• Manages site-based workflow in line with critical path demands, ensuring timely and quality delivery.

• Ensure compliance with safety protocols, grid interconnection requirements, and regulatory standards.

• Act as the primary point of contact between project stakeholders (Project Managers, Project Engineers, Customers, OEMs and Vendors).

• Develop and follow commissioning plans, test plans, procedures, and schedules.

• Understand and interpret project-specific task orders, change orders, and MSAs.

• Lead root cause analysis (RCA) and high-level troubleshooting for major issues.

• Provide final commissioning sign-off and documentation.

• Train and mentor junior engineers and technicians.