Senior Dotnet Developer

Job Title: .NET Developer (Local candidates only)

Job Location: Lansing, MI (onsite)

Job Duration: 12+ Months Contract

Job Responsibilities:

• Participate in technical architecture discussions, modernization initiatives, and forward‑looking solution design efforts.
• Allocate work effort across enhancements and maintenance activities, with approximately 40% focused on new features and enhancements and 60% on maintenance and bug fixes
• Design, develop, and maintain ASP.NET MVC applications and Web APIs using JSON, Swagger, and Dapper
• Maintain and enhance CI/CD pipelines in Azure DevOps with strong Git-based source control practices
• Build and enhance front-end functionality using JavaScript, jQuery, Bootstrap, and Telerik UI
• Develop and maintain Crystal Reports to support business reporting needs
• Tune SQL queries and optimize database performance across distributed systems
• Utilize Visual Studio for enterprise application development and debugging

Required Qualifications:

• 9+ years of professional experience developing enterprise applications using C# and .NET Framework 4.8.
• Hands-on experience developing applications using modern .NET versions (e.g., .NET Core, .NET 8, or .NET 10).
• Advanced proficiency with SQL Server 2019, including SSIS package development, complex SQL scripting, stored procedures, and performance optimization.
• Proficiency in API testing using Postman and SoapUI, along with automated UI testing using Selenium.
• Strong understanding of design patterns (Repository, Factory, Dependency Injection) and demonstrated adherence to SOLID principles.
• Expert-level knowledge of secure coding practices, including prevention of XSS, SQL injection, and implementation of robust security logging.
• Experience building and maintaining unit tests using NUnit or XUnit frameworks.
• Ability to design scalable and maintainable systems using clean architecture and modular design principles.

Preferred Qualifications:

• Proven ability to work collaboratively across multi-disciplinary, cross-functional teams to support seamless system and API integrations.

9+ years working within Agile/SCRUM environments, actively contributing to sprint planning, backlog refinement, and team-based delivery.