Job Details

Senior.NET Backend Developer

Location: Plano, TX - Hybrid

Duration: 6 Months Contract

Role Overview:

We are looking for a skilled Senior.NET Backend Developer with strong SQL expertise and experience working on application modernization initiatives. The role requires a solid understanding of existing business logic implemented in complex SQL queries and the ability to rebuild, optimize, and implement that logic within a modern.NET backend architecture.

Key Responsibilities:

• Analyze and understand existing business logic embedded in SQL queries, stored procedures, and database objects.
• Design and develop backend components using .NET /.NET Core, translating database-driven logic into scalable application-layer services.
• Participate in application modernization projects, including migration from legacy systems to modern, service-oriented or API-driven architectures.
• Optimize SQL queries for performance, scalability, and maintainability.
• Collaborate with business stakeholders, architects, and frontend teams to ensure accurate interpretation of business rules.
• Develop and maintain RESTful APIs and backend services to support application functionality.
• Ensure high-quality code through unit testing, code reviews, and adherence to best practices.
• Support production issues, root cause analysis, and performance tuning as needed.

Required Skills:

• 10+ years of experience in.NET / C# (.NET Core preferred) for backend development.
• Excellent SQL knowledge, including complex queries, joins, CTEs, stored procedures, and performance tuning.
• Hands-on experience in application or database modernization projects.
• Ability to reverse-engineer business logic from legacy SQL-based implementations.
• Experience working with relational databases such as SQL Server (preferred).
• Understanding of layered architecture, service-oriented design, and API development.
• Familiarity with source control systems (Git, Azure DevOps, etc.).