1st round was coderbyte round, 2 python programs and 1 sql query. 2nd, 3rd and 4th round were all same technical interviews writing 1python program and 1 sql query. All went well, I wrote all programs and sql correctly but didnt hear back from them positively. 3rd party Hr from posterity were very smart and was trying to find out if I would actually join or would just accept the offer and take another offer on it. I personally feel this is un-professional and reflects company mindset.