{"schemaVersion":"jobsearcher.job.v1","id":"3d7f50ce04e05371b23bcc9b","url":"https://jobsearcher.com/jobs/3d7f50ce04e05371b23bcc9b","canonicalUrl":"https://jobsearcher.com/jobs/3d7f50ce04e05371b23bcc9b","title":"Senior .NET Developer","description":"Working with an award-winning Federal IT solutions provider, you will contribute to mission-enabling technology and strategic solutions across National Security, Federal Financial, Healthcare, and Space & Science domains. This organization supports critical government agencies, driving digital modernization, artificial intelligence, and cybersecurity initiatives to secure the nation's future.The Role Support mission-critical, large-scale application development and maintenance for federal projects. Provide Tier 3 support for public-facing applications. Design and develop quick prototypes. Revise, update, refactor, and debug existing code and systems. Serve as an expert on applications and provide technical support. Develop documentation throughout the software development life cycle.What You'll Need 7+ years of experience in Microsoft legacy environments (ASP Classic/Native, VB.NET, DLLs, COM+). Experience with Azure cloud environment, IIS Server on VMs, Active Directory, ADFS, and Azure Entra. Proficient with GitHub Enterprise, Azure DevOps, Microsoft TFS, and CI/CD pipelines. Strong experience with SQL Server, Stored Procedures, and SSIS Packages. BS/BA in Computer Science, Information Systems Management, or a similar degree. US Citizenship is required due to federal client requirements for Public Trust clearance.What's On Offer Comprehensive benefits package including PTO, paid parental leave, and 11 paid federal holidays. Health and Dental Insurance with 100% employer-paid premiums for employee coverage under HDHP. 401(k) plan with a company match that is 100% vested after two years of service. Annual Tuition & Professional Development Reimbursement benefit.Apply via Haystack today!","company":"Haystack","rawCompany":"haystack","city":"Baltimore","state":"MD","isRemote":false,"isActive":false,"createdAt":"2026-09-01T08:22:38.936Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior .NET Developer","description":"Working with an award-winning Federal IT solutions provider, you will contribute to mission-enabling technology and strategic solutions across National Security, Federal Financial, Healthcare, and Space & Science domains. This organization supports critical government agencies, driving digital modernization, artificial intelligence, and cybersecurity initiatives to secure the nation's future.The Role Support mission-critical, large-scale application development and maintenance for federal projects. Provide Tier 3 support for public-facing applications. Design and develop quick prototypes. Revise, update, refactor, and debug existing code and systems. Serve as an expert on applications and provide technical support. Develop documentation throughout the software development life cycle.What You'll Need 7+ years of experience in Microsoft legacy environments (ASP Classic/Native, VB.NET, DLLs, COM+). Experience with Azure cloud environment, IIS Server on VMs, Active Directory, ADFS, and Azure Entra. Proficient with GitHub Enterprise, Azure DevOps, Microsoft TFS, and CI/CD pipelines. Strong experience with SQL Server, Stored Procedures, and SSIS Packages. BS/BA in Computer Science, Information Systems Management, or a similar degree. US Citizenship is required due to federal client requirements for Public Trust clearance.What's On Offer Comprehensive benefits package including PTO, paid parental leave, and 11 paid federal holidays. Health and Dental Insurance with 100% employer-paid premiums for employee coverage under HDHP. 401(k) plan with a company match that is 100% vested after two years of service. Annual Tuition & Professional Development Reimbursement benefit.Apply via Haystack today!","datePosted":"2026-09-01T08:22:38.936Z","dateModified":"2026-09-01T08:22:38.936Z","hiringOrganization":{"@type":"Organization","name":"Haystack","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Baltimore","addressRegion":"MD","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"3d7f50ce04e05371b23bcc9b"},"url":"https://jobsearcher.com/jobs/3d7f50ce04e05371b23bcc9b"}}