3 rounds, all on sunday. DSA, LLD, HLD. DSA would say medium leetcode, tho not standard ones, but not super or rather difficult to crack them(yeah 2 problems). LLD was to design (db schema,api/methods design,db choice) a part of system for something like bus agency, in which gotta design for buses travelling from source cities to destination cities. A great open discussion with interviewer, he had been helpful and knowledgeable with that. Also discussed for optimization wrt future scale... Now here's the part, this 3 interviews in a day was said by recruiter with spot offer possibility same day. And he reached out a day back, i asked an extra day for HLD round, as needed the minimal revision. But he seemed to be in great hurry, denied.. HLD dint went the way i want, post hld i knew myself it wasn't my best, not close to my best. So yea missed the offer.