I was contacted via LinkedIn.

First, I had a quick phone call with easy multiple-choice questions.

Then, I had two phone interviews where I had to code some algorithms.

After that, I went to the onsite interview, which consisted of four interviews held during one day. One focused on my resume, one on design, and two on algorithms and brain teasers.

Design a news feed that retrieves pictures on each post.

Find the common parent of two nodes in a binary tree, given that the nodes can refer to the parent.

Given a list of votes, retrieve the product with the "silver" medal. If both are tied for first place, then the silver medal would be the third maximum.