Research the position and focus on skill sets and your personal experience with each. Check out required Competencies and have examples how you dealt with issues and the outcomes. Expect 3 interviews.
How long does it take to get hired from start to finish at Ontario Public Service? What are the steps along the way?
It depends if you are a "direct hire' then it could be a week, but that's rare at OPS. The usual process takes months! and i mean it could be 3-4 months at times.
Types of experience, personal goals ,life experience they'll give you a situation to see how you would handle the problem or respond to it.