The recruiter gave me a tour of the office and talked about the amenities: yoga room, shower, free snacks, barista, etc. The rest of the interview took place in a meeting room with a whiteboard. There I met with two engineers. They asked me algorithm and design questions. Then I met with a senior manager, who asked me more algorithm questions, database questions, and questions related to object-oriented programming. Then I met with the head of engineering, who just wanted to answer any questions I had or address any concerns I may have related to Credit Karma.

Implement a function that checks if the parentheses of an input are balanced. Go over the design of a recent project. Show me how you would design a URL shortener. Come up with different ways to do a shuffle algorithm. Discuss some SQL and schema design, intermediate tables, joins, the Singleton pattern, and the difference between a class and an instance of a class, etc.