The interview process was extremely smooth. It did take approximately 4-5 weeks to complete all the rounds. For a BigData QE, depending upon the project hiring, there are multiple interview levels. Level 1 : Technical Round 1 Be prepared to answer everything you have worked over the years. They do check your resume pretty well and ask almost everything that is mentioned in your cv. So, prepare your cv very well before you share it with Amex recruiter. Level 2 : Technical Round 2 Detailed interview process than in Level 1, Good hold on SQL queries and understanding. They don't expect you to solve Hackerank difficult queries, but their expectation is how good do you understand or able to write queries. You should be good enough to answer them the counter questions. And they do confuse you in order to check your hold on the queries and clauses. Level 3: Managerial Round They do test you thorough, your communication, speaking skills, how presentable you're in the interview. It's always good to appreciate the interviewer for the time they are sharing with you. Be vocal and also don't trick your interviewer. The person interviewing you will be atleats 15 years exp., so you will be caught immediately. All the rounds will be more than an hour.