Senior Full Stack .NET/Angular Modernization Engineer (.NET Framework 4.8 to .Net Core 8, AngularJS/.Net MVC to Angular 20)

Ascendum is seeking a Senior Full Stack .NET Developer to support a modernization effort for a healthcare-focused client. This role centers on maintaining and evolving a hybrid technology stack that includes legacy .NET Framework applications alongside newer .NET 8 services and updating .Net MVC and Angular JS modules to modern Angular.

This is a hands-on individual contributor role. You should be comfortable with taking initiative despite sometimes limited direction, and be prepared to get familiar with the system quickly, and make suggestions for improvement where you find the opportunity.

You will join an Ascendum team already supporting this effort and will be expected to ramp up quickly and contribute with teammates both on the client and Ascendum sides.

Responsibilities (Not All Inclusive)

Design, develop, and maintain C# applications across .NET Framework 4.8 and .NET Core 8
Support and modernize ASP.NET MVC (Razor) and ASP.NET Web API applications,



including migrating patterns and practices to .NET 8 where needed.
Develop and maintain Entity Framework 6 and Entity Framework Core code, including migrations, performance tuning, and query diagnostics.
Write and optimize SQL Server queries, indexes, and stored procedures, and troubleshoot performance issues using execution plans and profiling tools.
Maintain and modernize AngularJS applications and contribute to migrations to modern Angular (v20), with a strong focus on TypeScript and integration with .NET APIs.
Deploy and support applications hosted in IIS, including an understanding of load balancing and authentication implications.
Familiarity in building, maintaining, and troubleshoot background processing solutions using Windows Services, Windows Scheduled Tasks.
Execute effectively in situations where requirements are incomplete or evolving by identifying work, validating assumpt

📌 Full Stack .NET Engineer (Argentina)
🏢 Ascendum System Private
📍 Argentina