Senior Dotnet Developer

Halian | Managed Services, Recruitment Agency & Contract Staffing; Austin (TX); On-site; USD 120,000 - 160,000; Full time

Job summary

Senior .NET Developer in Austin is sought to support the development, modernization, and enhancement of enterprise applications for a major public-sector organization. This hands-on role covers the Microsoft technology stack and Power Platform ecosystem, with emphasis on scalable design and modernization.

The position requires leading-edge skills in C#, ASP.NET Core, REST APIs, Angular/Blazor, SQL Server, EF Core, and Power Platform.

Qualifications

• 12+ years of experience with C#, ASP.NET Framework, and ASP.NET Core.
• 10+ years of experience with SQL Server and database design.
• Experience with modern front-end technologies including Angular and React.
• 7+ years of experience using Entity Framework Core.
• Strong application architecture and solution design experience.
• Experience with Power Platform solutions.
• Knowledge of SSIS, Windows Server environments, and monitoring tools.
• Experience building applications from the ground up within the last 3 years.
• Experience with unit testing and automated testing frameworks.

Responsibilities

• Design, develop, and maintain enterprise web applications using C#, ASP.NET Core, and .NET Framework.
• Build and enhance RESTful APIs and backend services.
• Develop modern user interfaces using Angular and/or Blazor.
• Design and optimize SQL Server databases, stored procedures, and schemas.
• Utilize Entity Framework Core for data access and development.
• Design and implement Power Platform solutions, including Power Automate, Dataverse, and Power BI.
• Perform architecture, troubleshooting, monitoring, and performance tuning.
• Develop automated testing solutions and maintain quality standards.
• Support scheduled processes, background services, and production environments.

Skills

C#

ASP.NET Core

Angular

Blazor

TypeScript

REST APIs

Entity Framework Core

SQL Server

Power Platform

Power BI

Unit testing

Tools

Dataverse

SSIS

Job description

We are seeking an experienced Senior .NET Developer to support the development, modernization, and enhancement of enterprise applications for a major public-sector organization.

This is a hands‑on development role for someone who enjoys designing and building applications from the ground up while working across the Microsoft technology stack and Power Platform ecosystem.

Key Responsibilities

• Design, develop, and maintain enterprise web applications using C#, ASP.NET Core, and .NET Framework
• Build and enhance RESTful APIs and backend services
• Develop modern user interfaces using Angular and/or Blazor
• Design and optimize SQL Server databases, stored procedures, and schemas
• Utilize Entity Framework Core for data access and application development
• Design and implement Power Platform solutions, including:
• Power Automate
• Dataverse
• Power BI
• Perform application architecture, troubleshooting, monitoring, and performance tuning
• Develop automated testing solutions and maintain application quality standards
• Support scheduled processes, background services, and production environments

Required Experience

• 12+ years of experience with C#, ASP.NET Framework, and ASP.NET Core
• 10+ years of experience with SQL Server and database design
• Experience with modern front-end technologies including:
• Angular
• React
• TypeScript
• 7+ years of experience using Entity Framework Core
• Strong application architecture and solution design experience
• Experience building applications from the ground up within the last 3 years
• Experience with unit testing and automated testing frameworks
• Experience with Power Platform solutions
• Knowledge of SSIS, Windows Server environments, and application monitoring tools

Preferred Experience

• Public sector or education industry experience
• Experience with Dynatrace monitoring and diagnostics

What We're Looking For

We're looking for a senior-level engineer who can combine hands‑on development with technical leadership, architecture ownership, and modern Microsoft platform expertise. The ideal candidate will have experience delivering scalable enterprise applications while leveraging both traditional .NET technologies and Microsoft Power Platform solutions.