You cannot setup a team of dozens of people to run an important sector of the whole country by having them apply for positions. Not even companies hire that way, most companies hire based on recommendations and contacts. You don't have time for this, they need to form a government in a month or so. Six months in people already get antsy if enough is getting done, you'd be going through the third round of interviews.

Not every country has a spoil system, there's probably no need to change anyone in the institutions (except those very close to Vučić in dangerous positions)

> Not every country has a spoil system

Which is a double edged sword since then it's hard to get rid of the incompetent and corrupt people when they are deeply entrenched.

How? That doesn't mean that you can't fire people

People appointed for their closeness to a party are not too likely to be competent and incorruptible

Well it depends. Usually it's far from trivial to fire civil servants in most countries.

> party are not too likely to be competent and incorruptible

As I said, a doubled edged sword. A newly elected reformist government won't be very effective if they can't put new people in power.

Every ministry still has a team of people that are there based on their affiliation with the currently elected government. Of course I don't think they need to replace every clerk.