Apiary Technologies Senior Python Developer interview questions

Attended the interview via consulting. In the first round they have questions in the topics that are mentioned in Resume/ During the interview. In my case, they have started the questions with ML models and algorithm logics and formulae even though this position is for backend developer. and DB query optimization, explain plan. 2-3 DSA coding, Binary tree, sql query etc. Complete theoritical knowledge is required to crack this interview.