I applied through a recruiter. The process took 3 weeks.

Very unprofessional interviewer. Behaved like an obnoxious school teacher who wants students to mug up definitions word to word. Interview lasted 10mins. In a coding round the interviewer got hung up on the definition of liner/nonlinear DS and refused to move forward with actual problem solving. I told her whatever I knew about liner/nonlinear but she wanted me to elaborate more on definition. I told her that I can solve the problem but if she needs a perfect theoretical definition I do not have it.

I was telling her about the DS I wanted to use for the problem and why I chose it but she just kept fussing over a stupid definition and didn't care about the purpose of interview which was problem solving. She kept giving condescending reactions and her own knowledge was surprisingly terrible. She refused to accept that queues are used to implement btrees which is actually correct. May be if someone opened the first page of a DS book and read only that page, that person could clear the interview with her! Bookworms good for nothing type candidates will surely impress such unqualified interviewer. The interview was incomplete.

Only one theory question was asked - Difference between liner and non linear data structures.

Another question was LRU cache implementation but could not even get to it because interviewer wanted to first hear bookish elaboration on linear/ nonlinear DS. Unless you answered that she believed you didn't know any DS or problem solving