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

Senior
Apr 2026

Summary

PM interview at Amazon focused on a fulfillment operations scenario. One question, fairly meaty, sat at the intersection of product strategy and customer-facing recommendations.

Questions Asked (1)

Q1

You're a PM for Amazon Fulfillment and need to reduce warehouse space usage by optimizing SKUs. How would you design a recommendation system on Amazon Prime that surfaces similar products to customers?

Product StrategyProduct Sense & IdeationProduct Analytics & Metrics
Author's notes

The warehouse angle threw me a bit.

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AI HintsAI Generated

Suggested Approach

Start by clarifying the business objective: reducing warehouse space by optimizing SKUs, and how a recommendation system on Prime can influence customer behavior to achieve that. Then, outline a systematic approach: define success metrics, design the recommendation logic, and consider implementation and iteration. Emphasize the trade-offs between space reduction and customer experience, and how you would measure and optimize.

Pro tip: Frame your answer around Amazon's leadership principles, especially Customer Obsession and Dive Deep, by showing how you balance customer needs with operational efficiency. Quantify the impact: estimate potential space savings and how it translates to cost reduction, and tie it back to Amazon's flywheel.

1. Clarify the Goal and Constraints

Confirm the objective: reduce warehouse space by optimizing SKUs, and the role of the Prime recommendation system. Ask clarifying questions about which SKUs are problematic (e.g., low turnover, bulky), and what constraints exist (e.g., customer satisfaction, Prime benefits).

2. Define Success Metrics

Identify key metrics: warehouse space reduction (e.g., cubic feet saved), SKU rationalization (number of SKUs reduced), customer impact (e.g., conversion rate, customer satisfaction), and business impact (e.g., cost savings, Prime engagement).

3. Design the Recommendation System

Propose a system that surfaces similar products to customers, prioritizing alternatives to low-performing SKUs. Use collaborative filtering, content-based filtering, or hybrid approaches. Consider real-time personalization and A/B testing.

4. Address Trade-offs and Risks

Discuss potential risks: cannibalization, customer dissatisfaction if preferred products are unavailable, and algorithmic bias. Mitigate by ensuring recommendations are relevant and by gradually phasing out SKUs.

5. Implementation and Iteration

Outline a rollout plan: pilot with a subset of SKUs, measure impact, and iterate. Use feedback loops to refine recommendations and adjust SKU optimization strategy.

Key Points to Mention

  • Customer Obsession: Ensure recommendations enhance customer experience, not just reduce space.
  • Data-driven approach: Use historical sales, browsing behavior, and inventory data to inform recommendations.
  • A/B testing: Validate the impact of the recommendation system on both space reduction and customer metrics.
  • SKU lifecycle management: Identify SKUs for phase-out based on performance and recommend alternatives.
  • Cross-selling and upselling: Leverage recommendations to shift demand to more space-efficient products.
  • Measurement: Define clear KPIs and track progress toward space reduction and customer satisfaction goals.

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