Start practicing to interview and getting your resume/CV in order. Start contacting recruiters; they will take a long time to get you into the system. Be wary of recruiters that ask for doc versions of your resume because it means they will be editing it, though you might not care if you're just trying to get a job. Either grab a .info site to host your resume/CV or just link to LinkedIn in your paper copy. You want some sort of semi-permanent online version of your CV/resume so that when a recruiter finds it years from now in their database, maybe they can see the more recent version without having to contact you as if you were a college grad (since that is the copy of the CV/resume they'd have). Link to your open source project/profile in your resume. Personally I think GitHub is loads better than Google code, but since your stuff is in Google code, you might just link to the project(s) you worked on.
I'm sure you do, but ensure your LinkedIn account (used by recruiters more than anything else) is in top-shape. You may want a Careers 2.0 profile (http://careers.stackoverflow.com/), though it is still pretty limited in scope, jobwise. Subscribe for alerts for relevant searches in http://www.indeed.com/.
Make sure you also have G+, Twitter, FB, etc. cleaned up and looking nice.
The main thing is to start now with all of this. Don't wait 2 months.
Finally the #1 way to find new jobs is networking. Not schmoozing/douchebag-networking, but through friends/family/friends of family. Every job except for my first that I've gotten was through a friend, family member or co-worker.
Also, getting involved actively in local groups that code and not just present is a great idea. Nothing wrong with going to presentations, etc. also http://www.meetup.com/find/ (iOS in Stanford: http://ios-development.meetup.com/cities/us/ca/stanford/?off...), but don't be a cheeseball and try to meet everyone. Just be normal.