focus on my application and supporting statement including my course and teaching placements, previous work experience, interests, why I want or feel I'm suited to this particular job. what I feel that I can contribute ?

Very informal. I approached them and was hired on the spot. I was later told there had been a complaint to Human Resources because there should have been a more formalized process. Regardless, I was hired, but I knew someone in my department was unhappy. I immediately became aware of the dysfunctional office politics. Especially when I witnessed two faculty arguing sarcastically in the hallway.