• Ensure all mechanical systems are installed, tested, and performing in accordance with project specifications, design intent, and applicable standards • Review Factory Acceptance Test (FAT) documentation for major equipment; track and verify closure of all open or deferred punch items • Audit GC and trade inspection checklists for accuracy and completeness, and perform independent QA/QC inspections • Develop and maintain commissioning plans, schedules, and test procedures for mechanical systems • Validate system integration and interoperability between mechanical, electrical, and control systems • Identify deficiencies and manage corrective actions through retesting and verification prior to turnover to the commissioning team • Prepare, maintain, and track QA/QC documentation and test records