This is the kind of question that sounds manageable until you realize they want all of it in one answer.
Choose a project that showcases your ability to make technical decisions with business impact, ideally one involving data modeling, trade-offs, and measurable outcomes. Structure your answer as a story: start with the problem and motivation, then walk through your role, decisions, challenges, and results, ending with honest reflections. Keep it concise (2-3 minutes) and focus on the 'why' behind your choices.
Pro tip: Quantify the impact with metrics that matter to DoorDash, such as delivery time, order volume, or cost savings, and explicitly connect your technical decisions to those outcomes. Also, show self-awareness by discussing what you'd do differently without being overly self-critical.
Briefly describe the project's business or technical motivation, the problem it solved, and why it mattered to the company or users.
Clearly state your specific responsibilities and contributions, avoiding vague 'we' statements. Highlight your individual ownership.
Describe the technical approach you chose, why you chose it over alternatives, and the key trade-offs (e.g., consistency vs. availability, latency vs. cost).
Share the biggest challenges you faced and how you overcame them. Then explain how you measured success, including specific metrics and their outcomes.
Conclude with what you learned and what you would do differently, showing growth and continuous improvement.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.