3 interviews:

• One LeetCode-style interview. The same questions were asked to everyone, it seems. I received the book marketplace problem.

• Two lighter interviews that consisted of implementing simple things, such as different iterators or a data parser.

I received an offer and signed it. Coinbase rescinded it two weeks prior to my start date. I had already resigned from my current job. They did the same for most ongoing offers due to a reported $500 million loss.

Implement a book marketplace to match all sell and buy offers "optimally".

Implement different iterators, such as a step iterator.

Parse data passed as a list of strings.