at Jacobs in Chicago, Illinois, United States Job Description Jacobs is seeking an experienced Commissioning Manager to oversee the planning, coordination, and execution of commissioning and startup activities for large-scale natural gas fired power generation facilities. This role is critical to ensuring safe, efficient, and technically sound system energization, equipment testing, and overall plant readiness for commercial operation. Working under the direction of the Program Director, this position oversees multi-discipline commissioning teams, resolves system-level challenges, and drives predictable performance across all commissioning scopes. The ideal candidate brings deep technical knowledge of power plant systems, strong field leadership, and a proven ability to manage complex commissioning programs in a fast-paced environment. Responsibilities Oversee daily commissioning execution across mechanical, electrical, controls, and process systems, ensuring safe and coordinated system energization and testing. In collaboration with engineering leadership and applicable 3rd parties, review system boundaries and develop a project start-up and turnover sequence for each system Provide input and value to 3rd party commissioning plans, procedures, system readiness checklists, and turnover strategies aligned with project milestones. Oversee commissioning of major equipment including gas turbines, steam turbines, generators, HRSG /boiler systems, pumps, compressors, fans, heat exchangers, condensers, cooling towers, and auxiliary balance-of-plant systems. Oversee direct system flushing, cleaning, chemical cleaning, lube oil flushing, hydrotesting verification, steam blows, air blows, and other pre-operational activities. Coordinate with construction teams to validate mechanical completion, punch list closure, and system turnover packages (ITRs, MC certificates, redlines, and as-built documentation). Validate pre-commissioning and commissioning activities by 3rd parties vendors, OEMs, commissioning agents and contractors to ensure project expectations are met. Review and validate first fill, commissioning consumables, and spares strategies against commissioning strategy and with allowance for foreseeable risk scenarios which could impact project schedule and outcomes. Oversee multi-discipline subcontractors performing commissioning of fuel gas systems, steam and condensate systems, feedwater systems, cooling water systems, substations, switchgear, instrumentation, DCS / PLC controls, and protectiv To view full details and how to apply, please login or create a Job Seeker account