SEEKING FREELANCER Looking for experienced front end javascript developer in NYC to help continue to develop an large Instant Messaging application. Code base

SEEKING FREELANCER Looking for experienced front end javascript developer in NYC to help continue to develop an large Instant Messaging application. Code base is currently backbone with a Rails back end and some other custom components. Application is deployed and in use by 10's of thousands of customers. No remote work, sorry. Prefer a generalist with good all around experience including back end Rails work if possible. Contract is minimum of several months full time and pay is excellent.