Your question is Hardest Problem You Solved. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
What is the most difficult problem you solved as a software engineer, and how did you solve it?
Keep your answer specific and structured. I’m looking for the hardest problem you personally owned, the constraints you were working under, and the reasoning you used to get to a solution.