peer interview, direct manager interview, then boss of direct manger interview. need 3~4 rounds. no HR interview. it is 1 to 1 interview. but overall interview cycle time is quite long

There are multiple level of interview, HR--> covering basic clarification, willing to relocate, previous exp, manager--> team player, exp, project related, basic technical, team--> fully technical, management level--> cooperation, technical, exp level discussion