BAE Systems seeks an experienced Software Lead/Architect to design, develop, debug, and deploy complex real-time C4ISR software solutions across the full development lifecycle. The role requires hands-on technical leadership, customer engagement, and mentoring of cross-functional teams while working with Java, C++, and/or C#. Responsibilities include software architecture, version control, Agile practices, and build automation. The position demands an active Top Secret/SCI clearance and experience in distributed systems, mission planning, or military simulations.