Worked on biz.yelp.com full stack web development. The intern program is tbh one of the best I've ever seen. Everyone is super fun, they know exactly how to treat interns from fun events, to making sure your project is done at the end of the term. I got a bit unlucky put on my own project doing front-end which I found out I didn't like, so work-wise it was a bit of a rough ride. Still, from my mentor to the PM to the team, everyone was really nice and my coding style got infinitely better, so it was a good experience.