Senior .NET / Full Stack Developer — New York, NY

Gain America Inc.; New York, Northern (NY, KY); Hybrid; USD 120,000 - 150,000; Full time

Job summary

Gain America is seeking a Senior .NET / Full Stack Developer to own enterprise web applications on the Microsoft stack, building secure APIs and modern React front ends for high-traffic business systems.

The role offers a Hybrid / on-site model in the New York, NY area with contract and contract-to-hire engagements. Core stack includes .NET, C#, ASP.NET Core, Azure, React/TypeScript, and SQL Server.

Qualifications

• 5+ years shipping production software in C# / .NET
• Strong ASP.NET Core, Web API, and Entity Framework experience
• Front-end proficiency with React and TypeScript
• Hands-on Azure and CI/CD experience

Responsibilities

• Build and maintain ASP.NET Core services and RESTful APIs behind customer-facing applications
• Develop responsive front ends in React/TypeScript against those APIs
• Design and tune SQL Server schemas, queries, and stored procedures
• Deploy and monitor workloads on Azure using App Services, Functions, and DevOps CI/CD

Skills

C#

ASP.NET Core

React

TypeScript

Azure

CI/CD

Tools

ASP.NET Core

React

TypeScript

Azure

SQL Server

Job description

Gain America is recruiting a Senior .NET / Full Stack Developer for contract and contract-to-hire engagements with our enterprise clients in the New York, NY market. Own enterprise web applications end to end on the Microsoft stack — building secure APIs and modern React front ends for high-traffic business systems.

Work model: Hybrid / on-site in the New York, NY area
Core stack: .NET, C#, ASP.NET Core, Azure, React/TypeScript, SQL Server

What you'll do

• Build and maintain ASP.NET Core services and RESTful APIs behind customer-facing applications
• Develop responsive front ends in React/TypeScript against those APIs
• Design and tune SQL Server schemas, queries, and stored procedures
• Deploy and monitor workloads on Azure using App Services, Functions, and DevOps CI/CD

What you bring

• 5+ years shipping production software in C# / .NET
• Strong ASP.NET Core, Web API, and Entity Framework experience
• Front-end proficiency with React and TypeScript
• Hands-on Azure and CI/CD experience