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Meta·Product Manager·Onsite - Product Sense / Strategy·Senior

Senior
Apr 2026

Summary

Meta PM interview with a product design question that covered a lot of ground fast. The scope was wide enough that I kept second-guessing whether to go deep on one area or stay broad, which is probably the whole point.

Questions Asked (1)

Q1

Design a marketplace app for dog walking. Walk through the core user journeys, what you'd build for an MVP, the high-level architecture across mobile and backend, and how you'd think about scope and scale.

Product Sense & IdeationSystem DesignProduct Strategy
Author's notes

This question is deceptively wide.

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AI HintsAI Generated

Suggested Approach

Start by clarifying the goal and constraints, then structure your answer around user journeys, MVP, architecture, and scaling. Emphasize trade-offs and prioritization, and tie decisions back to user value and business metrics.

Pro tip: Anchor your answer in a north-star metric (e.g., successful walks per week) and explicitly state what you would NOT build for MVP to show focus and product sense.

1. Clarify and Scope

Ask clarifying questions to understand the target market, business model, and constraints. Define the problem statement and success metrics.

2. Map Core User Journeys

Identify primary personas (dog owners, walkers) and outline their end-to-end journeys, including discovery, booking, payment, and post-walk feedback.

3. Define MVP

Prioritize features for MVP based on user value and feasibility. Focus on core booking flow, payments, and basic trust mechanisms.

4. Outline High-Level Architecture

Describe mobile app (iOS/Android) and backend components, including APIs, databases, and third-party services (e.g., payments, maps).

5. Address Scope and Scale

Discuss how you would phase rollout, measure success, and scale the system to handle growth, including technical and operational considerations.

Key Points to Mention

  • Two-sided marketplace dynamics: supply (walkers) and demand (owners) acquisition and retention
  • Trust and safety features: background checks, insurance, real-time tracking, and ratings
  • MVP feature set: user profiles, scheduling, payments, notifications, and basic support
  • Architecture: mobile clients, API gateway, microservices, database choices, and cloud infrastructure
  • Scaling considerations: geographic expansion, supply-demand balancing, and performance optimization
  • Metrics: activation, booking conversion, repeat rate, and walker utilization

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.