2 rounds: 1) Leetcode/hackerung, 2 questions, 2 hours. First question was easy-medium difficulty. Second question was about finding the minimum cost for flights, given 4 different packages. 2nd question is the constant one, given that I did the same question 2 years ago as well. 2) Fit interview with team senior, 1 hour. Discussed about past projects and experiences. Tested on technical knowledge as well, such as model architecture and some statistics related questions, such as hypothesis testing.