The first round is easy LeetCode intervals, the second is project experience.
Onsite is the usual system design suspects.
Know REST, specifically FastAPI, for the coding round, even if the job you're interviewing for is completely unrelated.
At the end of the day, the interviews for this company are mostly about culture fit. There doesn't seem to be a serious engineering focus, so do your best to connect with them.
API rate limiter in FastAPI
The following metrics were computed from 17 interview experiences for the Headway Software Engineer role in United States.
Headway's interview process for their Software Engineer roles in the United States is very selective, failing most engineers who go through it.
Candidates reported having mixed feelings for Headway's Software Engineer interview process in United States.