Hi,
I can develop necessary APIs using ASP.NET Web API to meet your requirements. I understand theses APIs are to be created as part of ASP.NET MVC web application. And I also assume Entity Framework Code First is used for data access within your application. If not, please provide details. There will be other questions once I read details and documentation of your web application.
Please note that quoted price might vary depending on the amount of work involved which is known after studying your project.
I'm a full-stack web developer specializing in C#, ASP.NET MVC, Entity Framework, LINQ, Web API, WCF, Windows Services, SignalR, Sql Server, Bootstrap, typescript, angular 1.x/2 and higher, knockoutjs, jquery, javascript, css, etc. And also knowledgeable in version control tools like GIT and TFS.
Please contact me to discuss further about your project.
Cheers,
Swamy.