I applied online, and the process took four weeks.

• The first 30-minute screen was with HR and included general behavioral questions.
• Then I had an hour-long interview with an engineer that was mostly about a deep dive into projects and some more behavioral questions.
• The final stages consisted of an hour of coding, system design, and then 20 minutes with an engineering leader, which was just another general behavioral question session.

The coding part involved cloning a repo in advance and then making a bug fix. The actual code change is a trivial one-liner, but they really care about doing TDD, so do not change the code first. First, write both new integration tests and unit tests which should fail for the existing code, and then do the changes, which is what I failed at as I was focused on updating the unit tests. The system design is based on making extensions to the repo you cloned, so do a quick overview of the design before the interview. Otherwise, the questions were pretty standard. Focus on high-level details, and ask clarifying questions about e.g. rate-limiting, etc.

Why do you want to work here?