Mid-Level.NET Developer

Salary: $88,000 - 128,000 per year Requirements: We require 4+ years of C#/ASP.NET software development experience on complex technical projects, including highly available national security systems. We seek an intermediate understanding of C#/ASP.NET enterprise software architecture components and patterns. We need an intermediate understanding of ASP.NET Framework 4.0 or later and .NET Core. We require experience in both client-side and server-side development. We require experience with Entity Framework. We require experience with Visual Studio 2019 or newer. We require experience with object-oriented analysis and design. We require experience with SQL Server. We require experience with GitLab source control. We require experience with data analysis and reconciliation. We require experience integrating data from multiple sources and performing deduplication. We require experience developing queries and reports. We require experience with user interface design and development. We need strong problem-solving ability and close attention to detail. We require an active Final DoD Secret Security Clearance. Preferred: experience developing Web APIs. Preferred: experience working in Colorado or the DMV area. Preferred: experience supporting a large-scale federal IT program. Preferred: experience with the SAFe Agile delivery framework. Responsibilities: We develop and maintain enterprise applications using C# and ASP.NET. We support both client-side and server-side application development. We perform data analysis, reconciliation, and consolidation. We integrate data from multiple sources and support deduplication efforts. We analyze trends and patterns and create queries and reports. We design and build user interface components. We support mobile application development. We develop solutions using .NET Framework and .NET Core. We work with Entity Framework and SQL Server. We support Web API development. We use Visual Studio 2019+ and GitLab source control. We participate in CI/CD and Agile software delivery processes. We apply object-oriented analysis and design principles to application development. Technologies: .NET Framework API ASP.NET C# CI/CD GitLab Support Mobile SQL Security Visual Studio Web More We are Blue Rose Consulting Group, a mission-focused consulting firm that delivers innovative solutions to help federal organizations achieve their goals. Our team combines technical expertise, collaborative problem-solving, and a people-centered approach to support complex government missions. This Mid-Level .NET Developer role supports a large-scale .NET application in a national security environment and is primarily based at a contractor site within 30 driving miles of Colorado Springs or the Washington, D.C. metro area, with onsite support at Department of State facilities as required. We offer the opportunity to apply your technical skills to meaningful federal missions while working with a collaborative team that values innovation, accountability, and professional growth. last updated 35 week of 2026