Yoe: 5.5
Position: SSE

Round 1: DSA
Question 1 : Regular Expression Matching
Question 2 : Edit Distance

Round 2: HLD + LLD
Indepth discussion on current project. Complete design pros + cons + improvement.
LLD of Payment Service with differnt payment Methods

Round 3 : HM
Indepth discussion on project.
Prod bug that I solved recently.
Complex project that i worked upon recently.
Any design challenges that you had to overcome later on just before release.

Verdict: Rejected

Don't know what went wrong. According to me all rounds were good.

My analysis - HM didn't like the challenges i worked upon may be he was expecting me to build a rocket ship.