Senior Secure Web Developer — C#/.NET Core (On-Site)

BDR Solutions, LLC; San Antonio (TX); On-site; USD 85,000 - 110,000; Full time

Job summary

BDR Solutions, LLC, a government-focused contractor, seeks an experienced software engineer to develop secure intranet and restricted web applications using C#, .NET Core, Blazor, Razor Pages, and front-end JavaScript/TypeScript.

The role is on-site in San Antonio, TX (also Falls Church, VA or Tacoma, WA). You will implement, test, and secure full-stack solutions, participate in code reviews, and support SAFe Agile practices with emphasis on security (SAST/DAST) and authentication (OIDC/OAuth).

Qualifications

• 8+ years of software development with BS/BA; 12+ years with HS diploma.
• Strong experience with C# and .NET 8+/ASP.NET Core.
• Experience front-end development with JavaScript/TypeScript and component-based design.
• Experience with SQL Server and relational database objects.
• Architect and maintain secure, scalable applications within an established pattern.

Responsibilities

• Develop and maintain secure, restricted web applications.
• Implement C#, .NET Core, Razor Pages, Blazor components.
• Build modern front-end components using JavaScript/TypeScript.
• Integrate REST APIs and backend data services.
• Utilize Entity Framework Core for data access.
• Manage SQL Server databases.
• Work with IIS/Windows Server environments.
• Troubleshoot full-stack UI, API, and database issues.
• Remediate SAST/DAST findings and ensure security.
• Support OIDC/OAuth authentication integrations (Login.gov).
• Write unit and integration tests; support CI/CD workflows.
• Participate in code reviews and SAFe Agile.
• Apply AI-assisted development responsibly.

Skills

C# / .NET Core

Blazor

Razor Pages

JavaScript / TypeScript

REST APIs

Entity Framework Core

SQL Server

IIS / Windows Server

SAFe Agile

Git workflows

Security testing (SAST/DAST)

OIDC / OAuth

Unit & integration testing

US Citizenship

Education

BS/BA degree

12 years experience w/ HS diploma

Tools

ASP.NET Core

React

TypeScript

SQL Server

Git

Job description

BDR Solutions, LLC, a government-focused contractor, seeks an experienced software engineer to develop secure intranet and restricted web applications using C#, .NET Core, Blazor, Razor Pages, and front-end JavaScript/TypeScript.

The role is on-site in San Antonio, TX (also Falls Church, VA or Tacoma, WA). You will implement, test, and secure full-stack solutions, participate in code reviews, and support SAFe Agile practices with emphasis on security (SAST/DAST) and authentication (OIDC/OAuth).