This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Lead Software Systems Engineer in the United States. In this senior-level role, you will provide advanced technical leadership in designing, developing, and maintaining complex software systems supporting mission-critical operations. You will work at the intersection of software architecture, systems engineering, and technical strategy to deliver high-impact solutions for government and defense initiatives. Collaborating with cross-functional teams, you will define technical specifications, guide project execution, and ensure compliance with security and interoperability standards. This position offers the opportunity to shape system architectures that meet today’s demands while anticipating tomorrow’s challenges.