Tell me about something you did to make your team less dependent on you — documentation, onboarding, tooling, or teaching. What impact did it have?

Imagine you're the only one who knows how to make a special sandwich in the kitchen. If you teach others and write down the recipe, everyone can make it, and you can take a day off without the kitchen shutting down. That's what this question is about—making your team self-sufficient so they don't rely on you for everything.