Jonathan Chan
Software engineer and creator of FuzzMap, an instrumentation and coverage-guided fuzzing approach for React UIs; former Figma engineer who worked on editor reliability and tooling.
Best podcasts with Jonathan Chan
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Mar 25, 2026 • 51min
The Dollar Bet that Fuzzed Figma: Exploding Laptops and UI Reliability with Jonathan Chan
Jonathan Chan, a former Figma engineer and creator of FuzzMap, built a coverage-guided fuzzer for React UIs. He tells the lunch-bet origin of FuzzMap and why Figma needed faster, reproducible UI testing. He explains the gnarly React instrumentation hacks, state deduplication and visualization, and ideas for extending fuzzing to networks and full-stack scenarios.
