ASP.Net Developer

ASP.NET Developer Falls Church VA, San Antonio TX, or Golden CO (Hybrid)

MUST: Experienced Developer Ability to obtain a Public Trust clearance. Active CAC highly preferred 8 years of professional experience in developing and maintaining web applications. Strong experience developing and maintaining web applications using C# and.NET 8+/ASP.NET Core Experience with modern front-end web development, including JavaScript and/or TypeScript, component-based application design, state management, and integration with RESTful APIs. Experience working with SQL Server or other relational databases, including developing and maintaining SQL queries, stored procedures, table and column definitions, and other database objects. Experience with ASP.NET Core Razor Pages, Razor Components, Blazor, or comparable modern web application frameworks Experience designing and maintaining applications within an established architecture, including use of shared development patterns, reusable components and services, appropriate service boundaries, and maintainable database access patterns. Ability to troubleshoot full-stack application issues across the user interface, application/API layer, database, and hosting environment; identify root causes; and evaluate the potential impact of proposed changes. Experience with Git-based development workflows, including branching, merge/pull requests, resolving merge conflicts, peer code review, and automated build or test processes. Demonstrated ability to independently carry development tasks from requirements clarification through implementation, testing, code review, remediation of feedback, and completion. Strong written and verbal communication skills, including the ability to proactively identify and communicate technical questions, blockers, risks, and implementation considerations. Experience developing secure web applications and applying secure coding practices. Experience using AI-assisted software development tools while maintaining responsibility for reviewing, validating, testing, and understanding generated code. Bachelor's Degree required (or 4+ years of additional professional experience)

DUTIES:

Develop and maintain secure, restricted web applications. Implement C#, .NET Core, Razor Pages, Blazor components. Build modern, maintainable front-end components using JavaScript/TypeScript fundamentals. Integrate REST APIs and backend data services. Utilize Entity Framework Core for data access. Manage and configure SQL Server databases. Work with IIS/Windows Server environments. Troubleshoot full-stack issues across UI, API, and database layers. Remediate SAST/DAST findings and ensure application security. Support OIDC/OAuth authentication (e.g., Login.gov integration). Write unit and integration tests and support CI/CD workflows. Participate in code reviews and collaborate within SAFe Agile. Apply AI-assisted development responsibly. Participate constructively in peer code reviews, explain technical decisions, evaluate alternative approaches, receive feedback, and incorporate lessons learned into future work. Document technical decisions and share knowledge with other developers and project team members. Quadrant is an affirmative action/equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, status as a protected veteran, or status as an individual with a disability. "Healthcare benefits are offered to all eligible employees according to compliance mandated by the Affordable Care Act".