Meaning of 新人 in Japanese

I had imagined that the newbies fresh from university would probably be stuck with all the backstage work - collecting reference material, getting copies and such but I couldn't have been proved more wrong.

This is the first time in a while that someone we had such high hopes for came to our department.

Go easy on him. He's still new around here.

The newest staff members get all the donkey work when they're at the bottom of the ladder.

I like the new guy. He's not afraid to take on challenging work.

New hires who just joined the company do everything in this timid manner.

The rookie breathed new life into the team.

This new singer is really great.

This new announcer keeps stumbling.

Kate is crazy about the new singer who appears on television frequently.