button-pusher
nounUK /ˈbʌt.ənˌpʊʃ.ər/
US /ˈbʌt.ənˌpʊʃ.ɚ/
A button-pusher is a person who presses buttons.
The little button-pusher kept ringing the doorbell.
OTHER MEANINGS
2. A person who deliberately annoys or provokes others.
My brother is such a button-pusher; he knows exactly how to make me mad.
3. A worker whose job is to press buttons on a machine.
The button-pusher at the factory started the conveyor belt.
4. A person who pushes for change or action in an organization.
She's a real button-pusher when it comes to getting new ideas approved.