Absolutely. At my last startup I was VP of Engineering and at one point I tracked my time and was spending 45% of my week on recruiting activities. But that was necessary, both to protect my team's time and to grow. You can't hire good people without putting in the time to find them, talk to them, and convince them to join if you like them. And that effort can't be outsourced to a recruiter, either, if you want it to be productive.