The process took 6 weeks. I interviewed at Pinterest (San Francisco, CA) in Oct 2018
Interview
Initial call with recruiter. Phone screen with an engineer, Leetcode "Medium" question. Onsite with four engineers and an eng manager, mostly whiteboard problem solving (not really algorithms per se). Everyone was friendly and smart.
Interview questions [1]
Question 1
A really fun one implementing a simplified version of a Pinterest feature.
1st round technical phone screening with in 1 hour.
One follow up question was asked.
The problem was not too hard, but it requires you finish really fast without bugs.
Interview questions [1]
Question 1
Leetcode 1564. Put Boxes Into the Warehouse I.
Follow up: what is maximum total box sizes.
Recruiter call, tech round, onsite and rejection call. They sent me an email about a week after the last onsite and asked me to schedule a call on the same day. I scheduled a call to listen 30 second long rejection notice. A half of interview rounds were horrible. Interviewers were not prepared and arrogant.
Good experience not the best outcome. Was 1000% sure I completed all coding and sys design but was told didn't get enough signal for the competency round. Overall very organized but not very satisfied with the response.