Senior .NET Modernization Engineer – Hybrid (Atlanta)

Xcelo Group; Atlanta (GA); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Xcelo Group in Atlanta, GA seeks a Senior Full-Stack .NET Modernization Developer to lead modernization of legacy ASP.NET apps to .NET 8+, build REST APIs, and enhance React front-ends.

The role requires 10+ years of experience, strong Azure and SQL Server skills, and proven ownership from design through production support in a hybrid work environment. You will design scalable architectures and implement CI/CD in Azure DevOps while collaborating across teams.

Qualifications

• 10+ years of professional software development experience.
• Strong hands-on with C#, ASP.NET MVC, and REST APIs.
• Proven experience modernizing legacy ASP.NET to .NET 6/7/8/10.
• 5+ years of Agile delivery using Scrum or Kanban.
• Experience with Azure DevOps or GitHub and CI/CD pipelines.

Responsibilities

• Modernize legacy ASP.NET applications to modern .NET architectures.
• Design scalable, secure enterprise application solutions.
• Develop and maintain REST APIs for enterprise use.
• Build and enhance React user interfaces within an existing app.
• Own end-to-end delivery from design to production support.

Skills

C#

ASP.NET MVC

REST APIs

React

Agile delivery

Education

Bachelor's degree in Computer Science, Information Technology, or related field

Tools

Azure DevOps

Git

Azure Functions

Azure App Services

SQL Server

T-SQL

Job description

Xcelo Group in Atlanta, GA seeks a Senior Full-Stack .NET Modernization Developer to lead modernization of legacy ASP.NET apps to .NET 8+, build REST APIs, and enhance React front-ends.

The role requires 10+ years of experience, strong Azure and SQL Server skills, and proven ownership from design through production support in a hybrid work environment. You will design scalable architectures and implement CI/CD in Azure DevOps while collaborating across teams.