Senior React & C# API Developer - Onsite Seattle (Contract)

Next Gen Software Solutions LLC; Seattle (WA); On-site; USD 110,000 - 150,000; Full time

Job summary

Next Gen Software Solutions LLC is seeking a hands-on React.js developer who can also build C#/.NET APIs. This onsite Seattle contract role requires 5+ years of experience and involves backend API work alongside frontend development, with Azure deployment and CI/CD familiarity.

The ideal candidate will design reusable UI components, integrate with REST APIs, and ensure secure, high-performance web applications. Onsite work requires collaboration with cross-functional teams.

Qualifications

• 5+ years of hands-on experience building modern, scalable web apps.
• Strong React.js, JavaScript/TypeScript, HTML5, CSS3 expertise.
• Hands-on backend REST API development with C#/.NET/.NET Core.

Skills

React.js

TypeScript/JavaScript

C#

.NET/.NET Core

REST APIs

Azure

Tools

React.js

TypeScript/JavaScript

C#

REST APIs

Azure

Job description

Next Gen Software Solutions LLC is seeking a hands-on React.js developer who can also build C#/.NET APIs. This onsite Seattle contract role requires 5+ years of experience and involves backend API work alongside frontend development, with Azure deployment and CI/CD familiarity.

The ideal candidate will design reusable UI components, integrate with REST APIs, and ensure secure, high-performance web applications. Onsite work requires collaboration with cross-functional teams.