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

Senior
Jun 2026

Summary

Got a product strategy question at LinkedIn for a PM role, just the one question from what I can tell. Not much context around the round itself but the question was meaty enough to chew on for a while.

Questions Asked (1)

Q1

What criteria do you use to decide whether to build a generative AI model from scratch, fine-tune an existing one, or purchase a third-party solution?

Product StrategyTechnical Trade-offsAdaptability & Ambiguity
Author's notes

This one tripped me up more than I expected.

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AI HintsAI Generated

Suggested Approach

Start by framing the decision around business value and strategic fit, not just technical feasibility. Then walk through a structured evaluation of use case requirements, data availability, cost, time-to-market, and competitive differentiation. Conclude with a recommendation that balances short-term needs with long-term strategic goals.

Pro tip: Emphasize that the 'build vs. buy' decision is rarely binary—often a hybrid approach (e.g., fine-tuning a third-party model for core use cases while building proprietary components for differentiation) delivers the best ROI. Also, highlight the importance of considering total cost of ownership, including ongoing maintenance and potential vendor lock-in.

1. Define the Use Case and Business Objectives

Clarify the specific problem, desired outcomes, and how the AI solution aligns with LinkedIn's strategic priorities (e.g., member value, monetization, operational efficiency).

2. Assess Data and Technical Requirements

Evaluate the availability, quality, and sensitivity of data, as well as the required model performance, latency, and scalability. Determine if the use case demands proprietary data or unique capabilities.

3. Evaluate Build, Fine-Tune, and Buy Options

Compare the three approaches across dimensions like cost, time-to-market, control, customization, and risk. Consider factors like internal AI expertise, infrastructure, and vendor reliability.

4. Consider Strategic and Ethical Implications

Weigh long-term differentiation, data privacy, compliance, and ethical AI considerations. Assess whether the model is core to LinkedIn's value proposition or a supporting capability.

5. Make a Recommendation and Plan for Iteration

Choose the approach that best balances immediate needs with future flexibility. Outline a phased plan with metrics to validate the decision and pivot if necessary.

Key Points to Mention

  • Total cost of ownership (TCO) including development, maintenance, and scaling costs
  • Time-to-market and opportunity cost of delays
  • Data privacy, security, and compliance (e.g., GDPR, member trust)
  • Competitive differentiation and core vs. context capabilities
  • Internal AI talent and infrastructure readiness
  • Vendor lock-in risks and flexibility for future innovation

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