Meta Product Designer Case Interview: Product Sense & Execution for Community Health in Facebook Groups

This 60-minute case mirrors Meta’s real Product Designer interview format, emphasizing product sense and product execution with a bias toward impact, safety, and at-scale design. Prompt: Design a lightweight feature that helps large Facebook Groups maintain constructive, respectful conversations without hurting healthy engagement. You’ll explore ways to prevent low-quality or policy-violating comments and empower admins and members while respecting privacy and free expression. What you’ll do: 1) Frame the problem: identify primary users (members, admins, moderators), key jobs-to-be-done, and context (mobile-first, global, low-bandwidth, accessibility). Clarify guardrails around integrity, privacy, and community standards. 2) Generate and prioritize solutions: propose multiple approaches (e.g., pre-comment nudges, inline quality indicators, customizable auto-moderation, member education, admin tool improvements). Compare trade-offs for friction vs. efficacy, false positives, and transparency. 3) Define the experience: sketch critical flows and states (first-time use, success, error, appeals/undo, edge cases like harassment, misinformation, and sarcasm). Consider cross-surface consistency (Feed, Groups, Comments) and cross-app learnings. 4) Product execution: set a clear North Star metric (e.g., constructive comment rate or healthy reply depth) and guardrails (policy violation rate, blocks/mutes, negative feedback, retention for new/returning commenters). Outline instrumentation, experiment design (A/B test variants, ramp plan, power considerations), and rollout strategy by risk tier. 5) Collaboration plan: show how you’d partner with PM, Eng, Data Science, Research, Content Design, Integrity/Legal, and Privacy to de-risk and ship iteratively. 6) Iteration: propose a V1 that can be shipped in weeks, plus a V2 roadmap (personalization, admin dashboards, creator tools, multilingual support). Evaluation rubric (aligned with Meta): Product Sense (user value, clear problem framing, principled prioritization), Product Execution (metrics, experimentation, trade-offs, risk/abuse handling), Craft (clarity of flows/states, scalable patterns, accessibility), Communication (crisp structure, time management, collaboration mindset), and Impact (shipping mindset, measurable outcomes). Time plan: 5 min brief and clarifying questions, 10 min problem framing and users, 15 min solution exploration and trade-offs, 15 min execution and metrics, 10 min iterations and wrap. Tools: virtual whiteboard or paper sketches; high-fidelity visuals are not required. Deliverables: a clear problem statement, prioritized solution, key flows/states, success metrics with guardrails, and an experiment/rollout plan that reflects Meta’s scale and integrity focus.