Student Rey Perez looks at her computer screen at the office of the startup at which she works.

Thirty-seven Princeton University students spent the summer working at young businesses in New York City this summer at the Keller Center's summer internship program in New York, the Princeton Start-Up Immersion Program. They fanned across the city, working at 19 startups, and came together for meals and panel discussions. In this video, they discuss what they did this summer, and how it will matter for their careers.