Mark Zuckerberg brought his college tour to Pittsburgh on Tuesday. The 27-year-old Facebook founder and CEO was on the Carnegie Mellon University campus along with Facebook’s vice president of engineering, Mike Schroepfer, scouting talent for the social networking site.

Carnegie Mellon was the third and final stop on an internship recruiting drive that began on Monday with visits to Harvard and MIT. Zuckerberg said that computer science and computer engineering programs at CMU have produced some of Facebook’s most talented employees. “When we decided to organize this trip to go see a few colleges, Carnegie Mellon was at the top of the list,” Zuckerberg said.

Zuckerberg spoke briefly to reporters outside of CMU’s Gates Center for Computer Science before addressing an invitation-only crowd of students and faculty. Tickets for that event were snapped up within minutes after becoming available, according to Randal Bryant, dean of the School of Computer Science at CMU.

The recruiting team from Facebook conducted campus interviews throughout the day. “We test them both on technical skills and on team workability, and how they fit with the values of Facebook,” Zuckerberg said. After being selected, he said new employees go to a six-week “boot camp” where they’re trained in the site’s code.

Correction: An earlier version of this story identified the man photographed with Mark Zuckerberg as Mike Schroepfer, vice president of engineering at Facebook. He is, in fact, Andrew Noyes,  director of public policy and media relations for Facebook. The caption has been corrected.