The Principal Mechanical Engineer at Northrop Grumman will be responsible for overseeing engineering design and ensuring compliance with 2D/3D drawing formats and standards for various mechanical products. This role involves collaboration with multiple stakeholders to develop Avionics Testing Solutions and Specialized Test Equipment for advanced military platforms, including the B-2 Stealth Bomber and LGM-35A Sentinel Missile. The position requires a strong background in mechanical or aerospace engineering and the ability to manage technical data packages while meeting project commitments.