Influence Without Authority: Persuading a Peer to Switch to Your Method
Company: TikTok
Role: Product Manager
Category: Behavioral & Leadership
Difficulty: medium
Interview Round: Other
Tell me about a time you persuaded a colleague to switch to your way of doing something. How did you win them over, and what came of it?
```hint Start from their objection
Think about why the colleague's existing way made sense to them, and what evidence or low-risk trial changed their mind, rather than how hard you argued.
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### Clarifying Questions
- Should the colleague be a peer I had no authority over, or can it be an engineer, designer or analyst I partnered with?
- Does "approach" mean a way of working, such as a process, template or tool, or can it be a product decision such as a prioritization call?
- Is a story acceptable where my approach was adopted only in part, or changed because of the colleague's input?
### What a Strong Answer Covers
- Why the existing approach was a problem, with a concrete cost to the team or to customers
- How the candidate understood the colleague's position and objections before pushing their own idea
- The persuasion method: evidence, a pilot or a demonstration, and how the colleague got a stake in the change
- A measurable outcome of the switch, and whether it spread or lasted
- Openness to being wrong: what the candidate changed in their own approach because of the colleague
### Follow-up Questions
- What was the colleague's strongest objection, and was any part of it right?
- What would you have done if they had still said no after seeing the evidence?
- Did the approach spread beyond the two of you, and who drove that?
Overview: A behavioral product manager question asking the candidate to describe a time they persuaded a colleague to adopt their way of working or a decision they proposed. It tests influence without authority, use of evidence and low-risk trials, openness to the other person's input, and a measurable outcome.