Indeed, writing code is the minor part of being a senior engineer. It's a "doing" thing, which AI is getting to the point of being decent at, mostly by copying. Your ChatGPT or Github Copilot are still unable to implement an algorithm no one has written before.

And solving problems? Needs "understanding" and in many cases, "lateral thinking", two features that are not possible with contemporary AI systems until AGI is a thing, and that one is still is science fiction. But solving problems is still the main reason people hire me.