I was contacted by the contracting agency within days of applying online. After a brief (maybe 20 mins) phone interview going over my background and the position, they set up an onsite interview for a few days later. Onsite interview lasted about 1 hour, consisted of STAR (Situation, Task, Action, Result) format questions, which the company prefers to use. The recruiter had already explained the format to me previously, so I had several situations prepared ahead of time. After that, I was given a situation test. It explained a situation, which I later found to be fairly common on the job, followed by several questions which I was to answer based on several policy facts which were also listed. After about 15 mins, the interviewer came back in, and we discussed my answers. After that, I was told I would hear back within 24-48 hours. I received the offer the next day.

In person interview involved a series of questions. It is best to be prepared at the interview like carry a notebook. It would be best to practice the interview and be prepared and friendly.