A commissioning manager is a supervising staff member of a construction company, engineer firm, or other business with large-scale projects. They are not only responsible for overseeing the projects themselves, but also the operations of the company at large. As a commissioning manager, your duties include making sure that your staff designs, installs, tests, operates, and maintains all building parts correctly, supervising staff onsite and approving any significant expenses or equipment installations. Your company may assign you to do this work across several different work sites. You need excellent time management, leadership, and organizational skills to keep operations running on time.