Sr . Net Developer

AGM Tech Solutions, LLC; Madison (NJ); On-site; USD 120,000 - 180,000; Full time

Job summary

AGM Tech Solutions, LLC seeks a senior hands-on .NET developer with strong SQL Server expertise to develop and support complex enterprise applications while contributing to modernization initiatives.

The ideal candidate is proficient in C# and SQL/database logic, with experience in React, Kubernetes, or legacy modernization as a strong plus. Will work across backend services and collaborate with cross-functional teams.

Qualifications

• 7–10 years of hands-on software development experience in enterprise environments.
• Strong hands-on development experience with C# and modern .NET (.NET Core / .NET 8/10).
• Extensive experience with Microsoft SQL Server and T‑SQL, including complex query development.
• Stored procedure development and query optimization; database design and performance tuning.
• Experience designing and developing backend services and large-scale enterprise apps.
• Experience with React or other modern JavaScript frontend frameworks; Selenium testing.
• Experience with Kubernetes and containerized environments; SDLC and design patterns.

Skills

Strong analytical and problem-solving

Excellent communication and teamwork

SDLC understanding

Tools

C#

.NET Core / .NET 8

SQL Server / T-SQL

React

Kubernetes

Selenium

Azure Cloud

Job description

Ideal Candidate Profile:

The ideal candidate is a senior hands-on .NET developer with particularly strong SQL Server expertise who can develop and support complex enterprise applications while contributing to modernization initiatives. Candidates should be equally comfortable working with C# application code and complex SQL/database logic, with additional experience in React, Kubernetes, or legacy modernization considered a strong advantage.

Required Qualifications

• 7–10 years of hands-on software development experience in enterprise application environments
• Strong hands-on development experience with C# and modern .NET (.NET Core / .NET 8/10)
• Extensive experience with Microsoft SQL Server and T‑SQL, including:
• Complex query development
• Stored procedure development
• Query optimization
• Database design
• Performance tuning
• Troubleshooting database performance issues
• Strong experience designing and developing backend applications, services, and business logic
• Experience supporting and maintaining large-scale, business-critical enterprise applications
• Experience troubleshooting application and database issues in development and production environments
• Strong understanding of software development principles, design patterns, and coding best practices
• Experience working throughout the full software development lifecycle (SDLC)
• Hands-on experience with React or other modern JavaScript frontend frameworks
• Hands-on experience with Selenium for automated testing
• Experience working with Kubernetes and containerized application environments
• Strong analytical, troubleshooting, and problem-solving skills
• Excellent communication and collaboration skills.

Preferred Qualifications

• Experience supporting payroll, human capital management (HCM), financial services, or other complex enterprise business applications
• Experience with legacy application modernization or system migration initiatives, including migration from mainframe or COBOL-based applications to modern .NET architectures
• Familiarity with older .NET/legacy technology stacks (, MVC, WCF, WebForms) to support understanding and modernization of existing systems
• Experience with Azure Cloud services
• Solid grasp of SOLID principles, OOP, Dependency Injection / Inversion of Control (IoC), and multi-threading
• Experience with ETL development using SSIS and reporting via SSRS
• Experience with additional enterprise database platforms (e.g., Oracle) a plus
• Experience with source/version control systems (Git, TFS, SVN)
• Experience with data integration and enterprise system interfaces
• Experience developing or consuming REST APIs and web services
• Experience working within Agile/Scrum development environments
• Ability to collaborate effectively across technical and business teams