I interview people in non-coding disciplines and this is what I try to do. Ask them technical questions from a soft-skills perspective. I like to ask questions where they criticize their own work, or get an idea of how they approach and tackle a problem. I look to see how they react to being corrected or taught in a similar way to how you would with a coworker.

We have a question on a quiz that we give to every potential employee that very reliably tells me early on whether someone is going to be a potential hire. It looks super technical, but in reality anyone should be able to work out a reasonable solution logically. I always ask the same question in the interview: "Walk me through how you solved the problem." Good candidates think past the problem to things like maintainability, really good candidates tend to ask for feedback on what the answer is.