I contacted a recruiter whom I met during a tour of Yelp's facilities and had a phone interview.
I was asked general programming questions about:
The Unix questions were unexpected.
The following metrics were computed from 280 interview experiences for the Yelp Software Engineer role in United States.
Yelp's interview process for their Software Engineer roles in the United States is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Yelp's Software Engineer interview process in United States.