Convert your HTML/Asp web forms website to MVC
Convert MVC3 / MVC4 to MVC5 and twitter bootstrap design.
Database Models (ADO.Net,Entity Framework,LINQ)
Make your MVC web application responsive
Change your MVC application template.
Can check your MVC site for bug
Can add new features or update code
Also have experience of writing Web API
Note:This basic gig of 5$ is only for small task. If you have multiple tasks or complete project then start discussion before ordering the gig.