.NET Developer

Robert Half Technology

Full-time other-general
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Location
Irvine, CA, United States
Posted
May 01, 2026

Job Description

Description
We are seeking an experienced Senior .NET Developer to support and enhance a mission-critical enterprise application built on a mixed VB.NET and C# codebase. This role is ideal for a hands-on developer with deep .NET experience who can quickly ramp up in a complex, partially modernized environment. The ideal candidate will bring strong problem-solving skills, experience working with legacy systems, and the ability to deliver fixes, enhancements, and new functionality with minimal onboarding.


Key Responsibilities

+ Analyze, maintain, and enhance existing application modules written in VB.NET and C#

+ Complete migration of remaining VB.NET components to C#

+ Deliver bug fixes, performance improvements, and new features in a timely manner

+ Work with SQL Server, including queries, stored procedures, and data integration logic

+ Support integrations with SharePoint, Excel/VBA, BI tools, and Power Automate workflow...