Obama packed the federal government with his own people before leaving, Office of Personnel Management included.
To hire anyone, President Trump had to choose people who would pass muster with Obama's people or they would never get hired or cleared.
Let's hope POTUS eventually gets some of us into the federal government, but so far it seems like POTUS supporters are having an extremely hard time getting in, I know a lot of people who worked for him to get elected and out of 100 or so, 1 guy got a government job.
It's like if you prominently supported POTUS forget about working in the federal government.
whereas Obama stuck thousands of people, people who were just left wing bloggers and unskilled drones, into lifetime positions.