It was a very good experience. All my interviewers were super nice and looked technically sound. Questions/Discussion was quite deep tech; I was looking for same, so I liked it. Unfortunately I wasn't prepare well. But hopefully, I can prepare well and apply in future. All the Best to team Omniful.
Rounds are quite flexible free flowing. I think better to go with open mind. Practice writing complete modular code not just leetcode style func implementation only. Also, practice to use any publicly available toold for HLD or Google Doc.