Don't rely on serendipity, we can do better than that. Use your programming skills.
Pull the meetup list, get all of their twitter profiles, search everyones last 1000 tweets for topics you are interested in. Pull all of their code on github. Push it through the profiler and find the talent.
Mirror github if you have to. Pull the whole darn thing, it's only a couple of hundred gigs (if you dont pull the code) Profile everyone based on their stars, contributions, watchers and pull requests.
How many other meetups do they go to? What's their history like on other forums?
Put the pics of these people on your phone, and then go and find them at the meetup. Pull their customer lists / testimonials and any other publicly available data.
Look at their company DNS records. Pull their company filings if they're available. Know their revenue, know their customers. Who's making the decisions at this company? Who is signing the cheques?
This seems to be a fun project (enticing really), but I think I should use my programming skills to improve my startup's product. There is so much to do. I'd like something like Uber. Push a button and a salesman with a black suitcase pops in front of me. ;)