Many firms that have software operations in the US have operations in Canada as well, usually in the same time zone.
For instance Pac Northwest firms such as Amazon and Microsoft hire in B.C., Calgary has a scene in systems programming, embedded systems that I know of and probably lots that I don't. Toronto has everything from Geoff Hinton to internet porn. Montreal has game super-studio Ubisoft as well as ASP.NET and mainframe programmers, great nightlife, a goth loli clothing store, ...
So far as personality I would be worried more about a person who was too reckless than I would somebody careful.
If you want to appear interested in people it helps to ask questions. Sitting on either side of the interview table I would see it as an opportunity to get information I couldn't get any other way about the state of the industry so I am always interested. People mostly like talking about themselves and if they are talking you don't need to think of something to say or open your mouth and risk scoring an own goal.
To get in the mood you can pretend that you already have the job and you are coiled like a spring to start and you are going to ask all the questions you need to start such as "what kind of computer do i get?", "what is the schedule?", "where will I be working?", as well as getting an understanding of the job enough to get ready to do it.
If you find that hard to do consider acting lessons at a Meisner school and they will teach you to be coiled like a spring in the second term!