It took a week to get hold of Recruiter until finally he wrote one liner email to schedule initial phone chat. Following week I had a talk with Recruiter who scheduled phone screen interview. The judgement day came and I was ready sling some sword. Interviewer came in 10 min late for interview. I was really disappointed by quality of question. Freaking Fibbonaci. The first program I ever wrote as a programmer. Yes for senior developer position, I was asked to implement program which returns sum of Fibbonaci Numbers in C#. I wrote program in 5 minutes which confused recruiter somehow. So I changed program and wrote it in a different way. He told me it was still wrong. I explained the working step by step and politely asked him to compile and run. (We were using Hackerrank). He couldn't figure out how to run. So I made a quick fiddle on Dotnetfiddle, and dm him a link. He could clearly see how my both approaches were working fine. he argued my program's time complexity in O(square of n), I proved its O(n). Then he argued space complexity of program is more and he have better solution. As you can see we already have spent lot time on stupid things. I really wished he asked me some quality questions and move on for god sake from Fibbonacci. I was really aggravated by inexperience of Interviewer and I was ready to pack my bags for Pisa to find the grave of Fibbonacci and vandalize it. I provided him a method which didn't work due to some typo. He purged program ; provided his solution disregarding 4 different O(n) solutions. Cool. Left on good note , thanked me for showing dotnetfiddle, sent me rejection letter following week. When people say these people want Monkeys to work for them (other interview reviews). They are right except they are wrong with Animal Analogy. They want Donkeys to work for them who listens to them blindly and give birth to their sterile Hinny programs.