Job Description You will be the Systems Engineer for the PAC 3 program at Lockheed Martin Missiles & Fire Control in Chelmsford/Andover, MA. Our team designs, develops and sustains precision engagement missile systems for the U.S. and allied forces, and we are expanding to meet increasing mission demands.. What You Will Be Doing As the Systems Engineer, you will provide technical guidance and day to day leadership for the PAC 3 systems engineering workforce. You will shape requirements, archit