Xero Software Engineer interview experience

I started with a phone call with talent acquisition to talk through my background, and then I went into a coding challenge on HackerRank. The coding stage was about long enough to get into the details, and I had time left to discuss my approach. The questions centered on data structures and algorithms—arrays and strings showed up, plus the kind of discussion where you needed to talk through time and space complexity using Big O.

After that came a system design interview. I had to design a high-level solution around a ticket booking-style problem and explain the decisions behind it. Once I