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Standard technical round which consists of resume/behavioral questions at the start, with two LeetCode questions (Medium) in the latter half of the interview. You are expected to solve both questions to meet the technical bar.

First is the recruiter round, then a one-hour technical interview which included questions around SQL and Python. After that would be behavioural and other technical rounds. Other technical rounds would cover system design, etc.

This is way too long. If you don't follow up, the recruiter might forget you ever applied, or sometimes even that they contacted you in the first place. Overall, once you reach the on-site stage, things tend to go smoother.