Brex Software Engineer interview experience

I was asked to implement logic to decide whether a player could buy a card based on what they had, including how discounts should work from cards already owned. Then I had to implement the actual purchase flow—updating the gem balance and adding the purchased card to the player’s hand only if the affordability check passed.

The way it was framed made it feel like a couple of connected functions rather than one isolated task, and I remember having to pay attention to the details of how discounts were applied from existing cards. There were also structured elements like having to write and