A few years ago I started asking just one question:
Can you describe the architecture of a recent project you worked on?
Usually we’d then start a discussion about deployment pipelines, tech stacks, methodologies and the like used. I haven’t done many interviews and I hate trying to corner people into sneaky tech corners. It makes me uncomfortable 
. I just want to know if the person understands the big picture when they are working on isolated pieces and it gives me a good sense of their communication/ “presentation” skills.