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What to look for

• Production experience with state management at scale, not just component styling
• Comfort reading and reviewing other engineers' code, since senior hires mentor as much as they build
• A track record of shipping and maintaining features over months, not just greenfield demos
• Familiarity with your actual stack's edges: SSR/hydration, bundle size, accessibility, testing
• Evidence of technical judgment: knowing when NOT to reach for a library or abstraction

Interview questions worth asking

• Walk me through a React performance problem you diagnosed and fixed in production.
• Describe a time you disagreed with a technical decision on your team. What did you do?
• How do you decide when a component should be broken up versus kept together?
• Tell me about a bug that was hard to reproduce. How did you track it down?

Red flags

• Only greenfield or tutorial-project experience, no history of maintaining existing code
• Cannot explain a technical decision beyond "it's best practice"
• No questions back about your product, team structure, or codebase

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