Essential Functions: Operates and maintains stationary engines and mechanical equipment such as steam generators and steam turbines, refrigeration and air-conditioning equipment, air compressors, turbo blowers, electric motors, diesel generators, pumps, heaters, and boilers to provide utilities such as light, heat, or power for buildings and industrial processes. The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate''s experience, education, skills and current market conditions.