Mercari Machine Learning Engineer interview questions

The interview process is too long, It took four weeks to start the formal technical interview. BTW, the home assignment is very important, please make sure to complete it carefully. The first round of technical interviews will involve two engineers, focusing on system design around this assignment. I failed the interview because I didn't put effort into the assignment, leading to poor feedback.

There are 3 rounds for the position. The overall process lasts almost two months. Do not waste time for the company. The first round is a homework for image classification. After that, they ghosted me for one week. Then they assigned the first technical interview with two engineers for about 1.5 hours. After 3 days, they emailed me to take the final interview. The engineering manager is very aggessive and asked many meaningless questions. I guess the team may have a suitable candidate. They ghosted me again for one week and sent me a rejection.