Need Joomla/K2 expert to help complete website and help update it

Looking for a tech-savvy website builder/programmer who is trained in Joomla and K2 for a small project. I hired someone to build a website for me. It is nearly done. But there are some mistakes to be corrected and some final design issues and the original builder can no longer work on the project. I then need help updating the site with new material from time to time and perhaps a little training on how to do this myself. Want to negotiate an hourly rate or short-term contract. Preference to Stanford student.