Add features to internal website

We have a website that is used internally written in ASP.NET/C#. Currently, I add features to the site as needed and I am looking for someone to help with this. Our site uses a SQL database and the pages are designed as simple as possible. New features and pages will be built in this same simple way. I currently have a backlog of new features that are needed and we will add more over time. The necessary features are described using flowcharts and user stories. Because the project is ad-hoc, has broad requirements I would like to work with individuals only (students, individual programmers, etc...). Thanks,