Senior .NET Developer (SLC, UTAH)

Associated Food Stores•Salt Lake City, UT

44d•Hybrid

About The Position

We are looking for a Senior .NET Developer who can handle the complexity of a dual-stack environment. We operate with .NET Framework 4.8 for our core legacy systems while actively developing new solutions in .NET 10. We need a developer who can "get into the thick of it." You won't just be writing new features; you will be analyzing legacy logic, refactoring architectural debt, and building the bridge to the future. If you are comfortable digging into a complex 4.8 monolith one day and architecting in Modern .NET the next, this is the role for you.

Requirements

Expert-level proficiency in C#. You must be comfortable working in both .NET Framework 4.8 (Web Forms/MVC) and Modern .NET (Blazor, Core, Minimal APIs).
Advanced knowledge of T-SQL, stored procedures, and database design.
Experience with Blazor, RESTful APIs, HTML5, and modern JavaScript frameworks.
Understanding of Object-Oriented Principles, Dependency Injection, and patterns for modernizing legacy code.

Nice To Haves

Experience with SharePoint or ServiceNow development.
Mobile development exposure (MAUI/Xamarin).
DevOps experience (Azure Pipelines, GitHub Actions).

Responsibilities

Design and build scalable, high-performance applications using .NET 10, Blazor, and C#.
Maintain, optimize, and refactor existing enterprise applications running on .NET Framework 4.8. You will be key in strategizing how to move these features forward using patterns like the Strangler Fig.
Design and manage complex data structures in Microsoft SQL Server. You must be comfortable writing and tuning raw T-SQL and stored procedures—we deal with heavy data where ORMs aren't always enough.
Troubleshoot issues that span across generations of code. We need someone who can trace a bug from a modern API back to a legacy backend and fix the root cause.
Act as a technical anchor. Help the team adopt modern .NET features while respecting established business logic.