I took the phone interview at FB, which included two Leetcode problems (easy/medium) level, with big(O) follow up. No resume went through or other stuff, only the algorithm problems were asked. Overall it felt good, the interviewer gave hints when I stuck.

Some basic ml questions related to optimizations. Also case study of ml system: what amount of data needed/ filter data/ what nn to use / hyper parameter choice / how to use your system for production. Also behavioral question for one round

Had two phone screens with the hiring manager and a senior researcher. Feedback was very positive. Moved to the (remote) onsite which consisted in: 1 research talk, 2 technical interviews, 1 coding, 1 system design, 1 behavioural. Two days after the onsite I was given a very positive feedback. Then I was put on hold for a month and at the end they proposed me to apply for another position in another office, nearly 10000km away from the original position! Moreover, while the first position was a perfect match for my skills, the second one had nothing to do with my profile. Overall it was a big disappointment to be given such a positive feedback and then be turned down.

One round of screening and onsite consisting of four interviews: 2 coding interviews, 1 research + coding interview, 1 system design interview. Each coding interview asked two leetcode questions within 45 minutes. The question difficulties are medium~hard leet code questions. The design interview was difficult as I was not familiar with it. It asked some kind of designing a system of Uber/Lyft.

they asked two coding questions, how do you understand the question and using your familiar programming language to solve the problem. There are two rounds of coding interview. Each round contains two questions.

1st interview - phone interview asking questions around AB testing (e.g. if you have given a data set with Gender and Height, how would you perform AB testing) 2nd interview - sql and python coding Create function to find intersection between two lines and if they match, return the slopes of that intersection between 2 lines