Senior Full-Stack .Net Developer

The company is seeking a Principal Software Engineer to join its agile software development team in Ashburn, VA, supporting federal systems work. The role involves designing and developing .NET applications, including middleware, user interface applications built with JavaScript frameworks, and web services, as well as integrating with PostgreSQL databases. The engineer will produce software design documentation, manage testing activities, and provide Tier 3/4 engineering support for solutions deployed to production. This is a hybrid position requiring two days on site per week.