Two phone screens were involved.
Live coding in a shared document.
Then an on-site interview with several engineers. Lots of writing code on whiteboards. It was long and thorough, but not uncomfortable. Everyone was pretty friendly and supportive.
As someone who later conducted interviews there, I can tell you that they want you to succeed, although you may or may not be a good fit for the specific role they are trying to fill.
I was asked to write JavaScript code for a carousel widget.
The following metrics were computed from 1 interview experience for the Yahoo Senior Software Engineer role in Santa Monica, California.
Yahoo's interview process for their Senior Software Engineer roles in Santa Monica, California is incredibly easy as the vast majority of engineers get an offer after going through it.
Candidates reported having very good feelings for Yahoo's Senior Software Engineer interview process in Santa Monica, California.