I applied online. The process took 2 months. I interviewed at Merck (Philadelphia, PA) in Jan 2022
Interview
First: HR Call Second: Two 1:1 calls with co-hiring and then hiring manager. And after qualifying these two, third round was scheduled. Third: Full day round of interviews with difference team members from the same location.
I applied through a recruiter. The process took 3 months. I interviewed at Merck
Interview
Multiple calls with HR and hiring manager followed by a full day of (virtual) interviews with the same questions over and over again, including a seminar. Standard SOP for any interview at this level. But what was pathetic was the lack of communication. Multiple people on the panel gave extremely positive feedback including the hiring manager who made it seem like an offer was coming soon. However, they completely ghosted me and didn't even have the decency to followup almost two months after I took a whole day to do this and prep/present a seminar. No respect whatsoever.
One day interview with several senior managers. Overall experience is smooth. Got offer in the end. You might get interviewed with several positions at the same time. And get offers for several positions