it depends on who is going to be the interviewer ... on interviewer was intellectual and knowledgeable , other were very arrogant... sometimes you can find put him at ease school, other play the bad guy and put him under pressure!

Typically it will be a call from recruiter (agency) followed by hiring manager interview if the agency put you forward. Interviews format depend on proximity to an office but expect a face to face with at least one hiring manager and also robust discussion over experience and achievements.