Initial interview with lead and technical director followed by a quick call with HR and then technical interview. The initial interview was casual and more like meet and greet, with last 30 mins focused on verbal technical questions to get a general idea. The technical interview is focused on code review followed by a feature design question. The interviews were great, very respectful and friendly environment. However, there is ZERO feedback from the HR, 3 weeks after the final stage (for context, all interviews were done in 2 weeks). It should be standard practice to send an email explaining rejection and/or delays (even no response to my followup emails). I found this behaviour by HR quite unprofessional.