Leading the sustainment and modernization of legacy software systems, the full-time Lead Engineer, Legacy Software will manage the enhancement and operational integration of military simulation systems while working remotely in support of the Air Force C2SET program. Key responsibilities: Lead the sustainment and enhancement of C2SET/AFMSTT legacy models and software artifacts Maintain and transition legacy simulation systems, addressing user priorities and urgent fixes Architect and guide integration support for interconnected modeling and simulation environments Required qualifications: Demonstrable experience with C2SET/AFMSTT or similar military modeling and simulation systems Experience with cloud-based services and RESTful architectures, alongside military mission planning Extensive experience in coordinating software changes and support for legacy architectures Familiarity with transition engineering and legacy documentation practices Active Secret clearance required