Luminos Labs interview questions

Daunting, after 3 rounds of interviews, not offer was made, talking to multiple people, real feedback or offer. I learn my lesson and ever since then, turn any interview process that requires more than two interview down before they waste my time.

hr + technical interview mostly about oop concepts, design patterns, databases questions and a talk about how would I design a fitness app in terms of database implementation, oop concepts implemented etc