I passed the Codesignal with a score of 523/600. Then I had the "Power Day." The case study was about C1 Chatbot and how it uses clicks and transactions to help users and predict their needs.

The technical interview wasn't super hard, but it involved using a hashmap to get keys in order from largest to smallest value, if that makes sense.

System design tripped me up the most. I thought it was going to involve coding a banking app, but instead, I was asked about the backend processes at a high level when a credit card is made or approved, which involved APIs and such. I definitely didn't study enough for that one.

Behavioral was easy, with just three STAR questions. Each question had follow-up questions about the results and so on.

How does the chatbot know what the customer needs?