I don't know why, whether it's to be fair or avoid litigation, but in most companies I've worked for or interviewed with, the senior engineers, hiring managers, HR, etc. don't have as much influence over the hiring process as you think. You'll probably still need to go through 5 stages of interviews, including a white-boarding or a take home test. Otherwise you wouldn't have all these "rockstar" programmers on Twitter complaining about the interview process. The best that these "influencers" can do for you, is to tip you off to an opening and maybe help towards the end of the interview process.
The other issue is, how do you know you're betting on the right horse? e.g. is the person that you're getting cozy with really going to help you career? You only have so much time and "connections" to invest.
My advice: instead of going to meet ups, take more interviews and improve your interviewing skills. Instead of spending 2-5 hours/week going to meet ups, take 1 interview instead. Even with no preperation, you'll start to see the pattern in the types of questions people ask. Improve on your answers. Interview again.