Jobs → Engineering → Senior .NET Application Developer

About the Role We are looking for a Senior .NET Application Developer to join our team in Rockville, MD. This role involves supporting an enterprise applications team in developing, modernizing, and maintaining mission-critical and legacy systems. Key Responsibilities • Develop, modernize, and maintain mission-critical and legacy systems • Support an enterprise applications team in various development tasks Requirements • MS degree in a computer-related field • 13+ years of overall experience; DMV-area project experience; government experience • 10+ years of experience with modern .NET web apps/Web APIs; 7+ years with MVC + Clean Architecture • 7+ years of experience with SQL Server + Oracle • Proficiency in VB.NET, C#, Blazor, React, .NET, HTML, SQL • Experience with data migration into SQL Server; SSO + Microsoft Entra ID • Knowledge of Microsoft Copilot (secure use); .NET deployment packages (DEV/TEST/PROD) • 7+ years of experience with responsive UI/UX; WCAG 2.1 AA accessibility • Active LinkedIn profile + genuine visa status