Primary Function: Perform a variety of skilled maintenance tasks including but not limited to installation, operation, maintaining, diagnosis, and repair of all heating, ventilating, air conditioning, refrigeration, cooling systems, environmental test chambers, and related electrical work. Follow all Northrop Grumman safety rules and regulations including but not limited to lock out tag out procedure, confined space entry, wearing steel toe shoes, driving company vehicles, and other safe practices and personal protective equipment to insure a safe working environment for all employees. .