The positions are bogus. When I was employed at Amgen I applied for over 20 positions. One of them interviewed me but I was not able to work onsite. 3 others decided to move forward without me. The rest ghosted me.
They are big on talent retention but they dont actively pursue this.
The opportunities at Amgen are almost non-existent. They would rather use their existing employees than hire new ones. That means the longer you work there the more they will put on your plate. The end result is burnout.