A tech solutions provider in Washington, DC is seeking a Sr. Full-Stack .NET Developer to support the U.S. Department of State in application development. The ideal candidate will have 6+ years of development experience focusing on .NET technologies, with key responsibilities including designing, developing, and maintaining enterprise applications. Applicants must possess an active DOD/DSS Secret clearance and be able to work both remotely and on-site. The role emphasizes collaboration within Agile frameworks, ensuring secure and user-focused solutions.