I received a cold call from a recruiter.

There was initially one short phone screen (20 minutes) with the recruiter.

This was followed by two phone interviews (approximately 45 minutes each) with engineers.

After that, another recruiter, who handles advanced interview stages, became involved.

This leads to five on-site interviews (45 minutes to 1 hour each).

Approximately a week later, you learn the outcome.

I was asked not to share details of the questions.