Direct the design and integration of plant and balance-of-plant systems, including gas turbine and steam turbine interfaces, HRSGs and boilers, steam cycles, boiler feedwater and condensate, cooling water, water treatment, fuel gas and fuel oil, compressed air, hydrogen, chemical systems, drains and vents, and plant utility systems. Perform or approve sizing calculations and specifications for major equipment and packages, including combustion turbine generators, steam turbine generators, HRSGs, boilers, condensers, cooling towers, pumps, heat exchangers, compressors and blowers, tanks, pressure vessels, and water treatment equipment.