This is what I noticed and reasons I left after living their for 3 years.

I lived downtown proper and had no interest in moving out in the suburb areas where these bigger tech opportunities were. The appeal of Austin is downtown to me. The areas in which these larger companies and opportunities are in Austin (or Round Rock actually?) is a rather time consuming commute. I also didn't want to have a car and the transit system is... there isn't one. There are some smaller well established and known startups closer in downtown. I applied to a few, but I guess I'm just not what they were looking for because I didn't get offers. I guess I'm not the super rockstar they want.