I applied through a recruiter. I interviewed at LinkedIn
Interview
Contacted by recruiter, agreed to do phone screen, went on site. Had 5 interviews. Two coding/algorithmis, one design, one communication, one chatting about my history. Also had lunch in the cafeteria. They have an ipad with your schedule for the day. They let you know your interviewers ahead of time. The recruiting host shows you around the place before you start. It's a nice place.
Interview questions [1]
Question 1
Graph and tree problems, a geometry/math question, a well-known OOP design question, and explain a previous project as if explaining it to two new teammates.
I applied through a recruiter. The process took 4 weeks. I interviewed at LinkedIn (Dublin, Dublin) in Jul 2013
Interview
first had a call with an HR lady (very professional - not all LNK recuiters are), next a chat with the hiring manager, a conference call with 3 sales directors (one was a professional, the other not really and finally an on-site meeting with my direct manager. pretty easy all in all.
I applied online. The process took 2 months. I interviewed at LinkedIn (Omaha, NE) in May 2015
Interview
Very good communication and logistics. It was an open and very inviting PROCESS. The actual interviews were not very structured. They seemed to not really know what they were looking for and asked a lot of generic questions. I can't really pin point what they were looking for and they gave me very generic feedback about my qualifications for the position. I was very excited about working for the company BEFORE the interview. After the interview - not so much. If you are looking for a first job or a "cool company" to put on your resume I am sure it is fine. If you are a seasoned professional there are a lot of places you can make an impact without working here.