Your question is Your Proudest Feature. 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 feature that you are most proud of? Briefly explain the problem it solved, your specific contribution, the trade-offs you made, and how you measured its impact. Be prepared to explain how you worked with engineering, design, and other stakeholders, including what you would improve in hindsight.