The Interview process is as per market standard considering the position applied and consists of 3 level of round.
1) 1st level is coding round i.e. assignment task, level of difficulty ranges between moderate to high or if anyone wants to rate difficulty level on scale ranges between 1 to 10, I will give 8.
2) 2nd level is purely technical round and probably you will encounter with core team member or with Team Lead, 2 - 3 persons are involved in interview process.
Difficulty level on scale ranges between 1 to 10, I will give 8.5.
3) Co-founder round probably technical (If you are lucky enough they may skip this round for you)