Social Engine is a TPL/PHP (Smarty) based social network template. It already has a calendar built into it. We have successfully integrated it with our project management software - FENG. With Feng, Feng has a calendar built in as well. We want to integrate the Social Engine Calendar with the Feng calendar so our clients can book themselves with us through our social network for projects & classes.
You can see a video detailing this here: http://www.movfitness.com/videos/SEfengcalendar/SEfengcalendar.html
Previous SE experience a plus. Also previous calendar experience a plus.
For really great chance of getting this project - create an account on MOVFitness and talk with Matt - who is online often and probably on the chatbar to discuss working on it. This project is urgent!