Hi gfreeus
I am the ideal candidate to build your SF2.x based project site for the following reason,
1. I am familiar with SF2.x.I have been working on SF2.x in my daily work since Mar 2013. Always following SF framework structure and coding standard make my code easy maintenance and flexible extension. I always keep my code decent and logic clear. There is code example from another freelance job if you like to review.
2. I always use AngularJs(Javascript MVC framework) with SF to build client side script. Needless say, you may know REST is the common approach to communicate between both sides. "FOSRestBundle and JMSSerializerBundle" are used in my each project. I didn't NelmioApiDocBundle before, but just making a search, and know it is a bundle to generate documentation for API, like phpDocumentor. It would not be a problem to for me, a php guy with seven years experience.
3. Apart from above I am a Zend PHP5 certified engineer and ZF certified engineer, they are some evidence that I have strong ground on PHP.
Just one question about your mention "rest api authentication including simple authentication with basic and oauth". Do you mean to login via REST API? In my jobs, I always use SF firewall to build the authentication, instead of REST. It might be the only one in your mention I didn't involve, but it wouldn't a big deal for me.
I can complete it within 40 hours, and work on it at least 15 hours/week. Please let me know if you need more.
Kind Regards
Timefly