I was in a similar position. I use ASP.NET Core, works well, fine on Linux. I don't use Node but I do use TypeScript and getting that working smoothly with ASP.

I was in a similar position. I use ASP.NET Core, works well, fine on Linux. I don't use Node but I do use TypeScript and getting that working smoothly with ASP.NET Core took some experimentation, I went down the webpack rabbithole but abandoned it as I don't have an SPA. I use Dapper in preference to Entity Framework.