Should we build dark mode?

Last updated: December 9, 2025

Quick Overview

Your team is considering building a social feed. How would you evaluate this decision?

Optiver
Product / Decision Making
Data Scientist
Optiver
December 9, 2025
Data Scientist
Onsite
Product / Decision Making
Hard

40

5

2,722 solved


Your team is considering building a social feed. How would you evaluate this decision?

Product questions at Optiver test your ability to think like a product leader. This Onsite question evaluates how you balance user needs, business goals, and technical constraints when making product decisions.

What the Interviewer Expects
  • Demonstrate strategic product thinking beyond feature-level decisions
  • Analyze second-order effects and long-term ecosystem impact
  • Balance multiple stakeholder needs with clear trade-off rationale
  • Design experiments to validate key assumptions before building
  • Consider platform effects, network effects, and marketplace dynamics
  • Propose a phased rollout strategy with go/no-go criteria
Key Topics to Cover
Growth loops and retention
User research and problem identification
Go-to-market strategy
Competitive analysis
Data-informed decision making
Platform and network effects
How to Approach This
  1. Start with the user. Who are they, what problem do they have, and what is their current workaround?
  2. Use a prioritization framework: impact vs effort, RICE scoring, or ICE scoring.
  3. Define success metrics using the AARRR framework: Acquisition, Activation, Retention, Revenue, Referral.
  4. Consider second-order effects. A feature might boost short-term engagement but hurt long-term retention.
Possible Follow-up Questions
  • What would you do if usage data contradicts user feedback?
  • How would you validate this idea before committing engineering resources?
  • What competitive response would you expect and how would you prepare?
  • How would you decide to kill this feature if it's not working?
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