Twitter Software Engineer Interview Questions

dreamingincode - "In the API design, the interviewer is switching between RPC style (operation based endpoints) and REST style (resource oriented). Sticking to one convention and explaining why it is preferred over the other e.g. REST if the twitter domain maps nicely to resources e.g. /tweet or /follower or /user would help to create a more consistent and unified API. It would make it easier for clients to integrate with the API as well."See full answer

Krish M. - "Situation: I led a critical initiative to re-architect the high volume customer data platform. The system handled over 90 PB of records handling around 70 billion customer records daily and was foundational to customer data capabilities across multiple enterprise products. The existing architecture faced significant challenges around latency, accuracy, and scalability, and any disruption would directly impact global customers and downstream systems. Task: I was responsible for leading t"See full answer

Jiale L. - "will design remote two-player Tic Tac Toe: players see the same authoritative 3×3 board, take turns as X and O, and get instant updates when the other moves. I will assume mobile and web clients, spotty networks, and that cheating must be prevented by never trusting the client board state. Clarifications. Are users logged in or guest with a link? Is matchmaking random or invite-only? What happens on disconnect—forfeit, pause, or async completion? D"See full answer