Apply. Simple process. The position was posted on their career's site. I applied and within a month I began training. There's not much of an interview process. Just an extensive background check. Once that is satisfied, the process is pretty quick.

There is no interview. You stop by the assigned post office and meet the post master. It was not clear this is a part time position or who to ask questions to.

No interview required was required to apply for this position. I applied for the position, took the required exam, went through a very roundabout process, then received an offer within a few weeks.