LinkedIn interview questions

I applied through university. The first round was of coding from hackerrank. 3 question of coding in which two of them were easy. After a month I got a reply from LinkedIn that I have been selected. Then next interviews were scheduled after a month from the date when results were announced. All were telephonic interview. Got call on Skype. Second round was technical and coding they tested my testing skills as well. Third round was also coding and here my knowledge about algorithms were tested. Then fourth round was full of technical question and no coding as we were running out of time. Then I never got a call back from them about the result not even a yes or no. I waited for a month but didn't get a call. They could have shown some courtesy by replying to me with a yes or no. Even the interviewee time is precious. Since I did well so was expecting a call.

I was reached by a recruiter via LinkedIn. The phone interview was scheduled on the next week. They asked me two technical questions similar to those online questions. Not hard. I was not well prepared so didn't get an offer.