Battery Energy Storage System (BESS) Commissioning Manager

Job Title : Battery Energy Storage System Commissioning Manager Location : South Padre Texas Type : Contract Contractor Work Model : Onsite Hours : 50 hours per week plus Start date : around January 1, 2026 Duration 4 months Per diem : $171 / day Position Summary : System One is seeking a seasoned Battery Energy Storage System Commissioning Manager to oversee all commissioning and performance testing activities, plans of the day, and various contractors. Supporting client with gathering, reviewing, and submitting proper documentation and test results to ERCOT. Key Responsibilities : Develop Project Site-Specific Commissioning Manual Read and adhere to Startup Administration Manual. Develop and manage overall Startup schedules (P6, 90 Day, 3 Week) Setup and manage Startup budgets and forecasting. Labor, subcontracts, STS Coordinate between all parties involved with commissioning through daily and weekly meetings, i.e., daily POD meetings & weekly Commissioning meetings (Construction, TFAs, 3rd Party Testers, Owner.) Coordinate with the Performance Engineering team on Performance Testing and Substantial Completion timing Develop and administer the site energization plan(s) Leads and insists on strict adherence to Lock Out / Tag Out Procedures (LOTO) and policies. Monitor and operate generation projects in compliance with applicable NERC reliability standards while adhering to Critical Infrastructure Protection (CIP) cyber and physical security measures at NERC registered plants. Ensure that an organized documentation filing structure for all commissioning reports and documents is in place before starting testing and being maintained daily. Review & implement SU staffing plan Manage and oversee the commissioning budget Coordinate with the customer Operations Center energization of circuits, as well as startup, shutdown, and curtailment Coordinate with the customer Maintenance organization for PMs and CMs as needed Prepare action plans to address gaps in the commissioning schedule / plan. Track, review, and approve of all Startup Lessons Learned, Condition Reports, and Best Practices. Qualifications : Must have ERCOT commissioning experience BESS performance testing and commissioning experience have experience with the ERCOT BESS testing, energization, and grid synchronization process, including the ERCOT Checklist Parts 1 through 3 requirements System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M-1 #LI-JC1 Ref : #275-Eng Kansas City