Note: This position requires an active TS/SCI clearance and Security+ certification.

Summary: The Senior .NET Core Developer will be a key contributor to the development and maintenance of SENTINEL, a web-based application used to track counterintelligence related entities and their relationships. This role requires an exceptional developer with deep expertise in .NET Core, C#, and related technologies.

Responsibilities:

• Software Development:
• Develop new, cutting-edge software solutions for SENTINEL utilizing strong C# programming skills.
• Maintain and enhance existing functionality within the SENTINEL application.
• Contribute to the design and architecture of new features and component
• .NET Core Application Development:
• Develop enterprise-level web applications utilizing .NET Core, Razor Pages, Dependency Injection, Web APIs, and HTTP request/response handling.
• Data Management:
• Utilize Entity Framework (EF) Core, Code First, Migrations, and LINQ syntax to manage data interactions with SQL Server, including data insertion, querying, updating, and deletion.
• Development Environment & Tools:
• Daily use of Visual Studio and SQL Server Management Studio for bug fixing and new functionality development.
• Daily use of Azure DevOps and Git for source code management, version control, and collaboration.
• Database Administration & Optimization:
• Utilize a strong understanding of SQL Server and relational database principles to create, modify, and delete database objects.
• Troubleshoot and address database performance issues.
• Front-End Development:
• Possess exceptional JavaScript development skills.
• Implement AJAX calls, form validation, DOM manipulation, and interactivity using JavaScript.
• Style web applications utilizing CSS and UI layout frameworks such as Bootstrap 5 to create visually appealing and consistent user interfaces.
• Collaboration & Mentorship:
• Collaborate with other developers, analysts, and stakeholders throughout the software development lifecycle.
• Potentially mentor junior developers and share knowledge.

Required Skills/Qualifications:

• Education: Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• Experience: 10+ years of professional software development experience with a strong focus on .NET technologies.
• .NET Core Expertise: Deep understanding and practical experience with .NET Core development.
• C# Proficiency: Exceptional C# programming skills with a thorough understanding of object-oriented programming principles.
• EF Core & SQL Server: Extensive experience with Entity Framework Core, Code First, Migrations, and SQL Server.
• JavaScript & Front-End Technologies: Solid understanding of JavaScript, HTML, CSS, and modern front-end frameworks (e.g., Bootstrap).
• DevOps Proficiency: Proficient with Azure DevOps and Git for source control, CI/CD, and collaboration.
• Problem-Solving: Exceptional analytical and problem-solving skills.

Desired Skills:

• Experience using Docker and containerizing .Net Core applications.
• Experience with security best practices in web application development.
• Experience with testing frameworks (e.g., xUnit, NUnit).
• Familiarity with containerization technologies (e.g., Docker, Kubernetes).
• Experience with cloud platforms (e.g., Azure, AWS).
• Experience working in an Agile development environment.