Product design question
How would you add a health option for DoorDash?
- DoorDash
- Product design
- Medium
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What this question tests
Product design for adding a new vertical inside an existing marketplace without breaking the core experience.
How to approach it
- Define the target user: health conscious diners wanting calorie counts, or users with dietary restrictions like gluten free or diabetic needs.
- List pain points today: no reliable way to filter menus by nutrition or allergen on DoorDash.
- Decide where this lives: a filter on existing restaurant listings versus a dedicated Healthy tab.
- Prioritize a filter and badge system first since it needs less new restaurant onboarding than a new vertical.
- Plan restaurant-side incentives, like better placement for merchants who tag nutrition data.
- Define success as order frequency among users who engage the health filter and merchant opt-in rate.
What a strong answer includes
- Distinguishes casual health seekers from users with medical dietary needs, since the second group needs verified allergen data, not just calorie estimates.
- Proposes starting with a filter and badges on existing menus rather than building a whole new marketplace from scratch.
- Addresses the data problem directly: most restaurants do not have nutrition data, so partnering with a nutrition API or crowdsourcing is needed.
- Picks a metric like repeat order rate from health filter users as the validation signal.
Common mistakes
- Assuming restaurants already have accurate nutrition data available.
- Building a separate app or section instead of layering onto the existing browse flow.
Likely follow-up questions
- How would you get restaurants to submit accurate nutrition data?
- How would you handle liability if an allergen tag is wrong?
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Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop