Had 4 rounds R1 - LLD (One DSA question and then an LLD question regarding expiring tokens) R2 - LLD (LLD question with focus on concurrency) R3 - HLD (Stock market HLD, this was intensive as the constraints and requirements of the system were very typical think ~micro sec latency and 1M TPS) R4 - Co-Founder Round (Past experience discussion and then a puzzle) Was made the offer just after the discussions ended. R3 and R4 were in the office with an offer discussion once the offer was confirmed.