1st round basic ml and background experience questions . second round on dsa . 3rd round is on data engineering questions . waste of time not sure why they asked data engineering tools and questions . They told pyspark is needed and in final round the interviewer keeps asking only on airflow . he does not need any problem solving skills . if anyone is having experience with your required tools , hire them directly . Do not waste others time . The wayfair interviewer in 3rd round does not knowledge on ML and problem solving skills. Man it's just a tool . Just ghosted me and waste of time and not good to work around these kind of mindset people as well .