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Vinoj Kumar
Vinoj Kumar was VP of Engineering at Upwork, where he led experimentation at scale across the world's largest work marketplace. He focuses on limiting blast radius, measuring change with CPQI, and AI-driven operations, the engineering discipline that lets a public marketplace ship constantly without ever putting customer trust at risk.
Notable Quotes
"I use one simple rule: blast radius times reversibility. Big changes demand relentless testing; small, reversible ones don't—ship fast, watch the monitors, and fix it forward."
"High activity doesn't equal high quality. If users keep retrying, they're stuck. I look at success ratio—fewer clicks to the right outcome. Efficiency is the real marker of quality."
"Optimizing one metric ruins the others. We built a composite score—cost per quality inference (CPQI)—stitching cost, latency, and accuracy. It forces alignment and keeps us honest: fast isn't always good."
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