It's definitely a new skill on top of sitting alone and writing code. You can practice by doing some pair programming at your current workplace, with a friend,

It's definitely a new skill on top of sitting alone and writing code. You can practice by doing some pair programming at your current workplace, with a friend, or at a coding meetup. Edit: it may also mean the company you are interviewing at does pair programming. If you don't like pair programming, the interview is a good time to bring it up!