*First interview with HR about motivation, general resume questions, objectives, and some quick technical questions about general computer science (they can be found here on glassdoor).
*Second interview with an engineer, questions about projects on the resume, the most challenging aspect of the projects, motivation question again (why Yelp?), UNIX questions about commands and options and a trivial technical programming question. At the end there are some minutes to ask questions to the interviewer (in each interview)