Full Stack Developer (.NET + React Native)

Senior Full Stack Developer - .NET / React Native Location:

Chicago, IL (On-site) Contract:

1099 Type:

Hire Start Date:

ASAP

Sphere partners with clients to transform their organizations by embedding technology and modern processes into everything they do. We enable lasting competitive advantage by combining global expertise and local insight.

We are currently seeking a

Senior Full Stack Developer

with experience with

.NET

and

React Native

to join our team and help a financial services client enhance and expand their digital platforms.

Please note:

This role requires working

on-site at the client's office in Chicago, IL (hybrid) .

Key Responsibilities Design and build new APIs using

.NET 6 / ASP.NET Develop and maintain mobile applications using

React Native Collaborate closely with cross-functional teams including stakeholders, end users, and fellow engineers Ensure application performance, scalability, and maintainability Support ongoing development, testing, and deployment activities in a cloud-based environment Requirements

5+ years of software development experience Experience with

.NET 6 / ASP.NET

and

C# Experience with

React Native

for mobile development Proficient in

MySQL

and

Entity Framework Experience with

API design Experience with

RabbitMQ

or other message brokers Nice to Have

Experience with

AWS

or other cloud platforms Experience building UI test automation for React/React Native Familiarity with CI/CD pipelines, containerization, or DevOps workflows Background in financial services or regulated environments