I just remember mark Levin talking about this and how hard it was during his time in the Reagan administration to deal with the career employees and what it took to replace them.
He said that when he got to Justice there were lawyers there from the Kennedy administration.
Democrats always do this when they get elected...they put people of their mindset into positions where they aren't gone just because the President changes...that way even when the Libs aren't in power they're still running things.
Actually, a paradigm exists, it just won't be easy and will be met with resistance.
In the oil drilling industry, when the price goes down, service company prices end up dropping, too. Needless to say, with lower manpower requirements, the layoffs are brutal in severity and scope. No two companies follow the same pattern, quite, but some lay off the least experienced, retaining a core of very experienced people to train the next crop in. Some lay off the most expensive people or cut pay and benefits to the point they quit, looking for greener pastures. One I know of slashed senior middle management, because they were not needed to manage fewer jobs, and they were not directly money makers like field people.
Shrink the Federal Government, and personnel rosters can be shortened proportionally--do it hard, eliminate even a few more than necessary, and hire back those you really need who pass muster.
Drain the swamp.