If this is the situation, perhaps having public contributions to open source projects that you can show and discuss during the interview, could be helpful.

These contributions don't necessarily need to involve coding. If the project in question belongs to the company you are applying for, even better. The discussion doesn't need to be around the code details but focus on how you interact with other people and get things done.

Other than that, I would recommend looking at Jacob Kaplan-Moss recent posts since he addresses these interviews looking from the other side of the "table".

Good Luck.