DraftKings Software Engineer interview experience

Shortly after that, I completed an online HackerRank challenge that involved working through an “employee hierarchy” style scenario, with operations like add, remove, and other methods connected to the hierarchy rules. The problem felt very doable if you’re comfortable with object-oriented work, and I finished with all the test cases passing with about half an hour to spare. Two days later, I got the scheduling email for an onsite.

Onsite was four rounds in a row: an OOP-oriented design question first, then a coding round, then a technical deep dive tied back to what I’d worked on, and then