Pleasant and professional. Was contacted by HR adviser and pre-screening was conducted over the phone. On the day of actual interview, both HR and Hiring Manager present in the interview. HR is more of an observatory role whereas Hiring Manager goes thru a set of questions to test both professional skills and behaviors. Generally structured and a little branching off when certain questions requires more probing. Didn't get the role as there's better candidate. But HR didn't inform. Waited for end of 1 week (by the time which is pretty obvious I didn't get it) before following up with HR to get official confirmation.