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Guest Spotlight: Ilya Izrailevsky

Ilya Izrailevsky
DoorDash | Engineer

About Ilya Izrailevsky

Ilya Izrailevsky is Senior Engineering Manager of Experimentation at DoorDash, where he leads the engineering team behind the company's experimentation platform. He focuses on the infrastructure that lets thousands of tests run reliably at marketplace scale, including the platform work behind a single A/B test that ended up saving DoorDash millions of dollars.

Notable Quotes

"We run over about 12,000 experiments per year. Over 42 million monthly active users on DoorDash's platform at peak range, something like 300 million evaluations of experiments with feature flags per second."

"Our leadership, including our CEO, Tony, would read and reply to those experiment emails and would congratulate folks, but also encourage them to try some alternative ways."

"With AI, we've been able to ship a lot more features. The barrier to entry to build and test and launch a feature has been lowered. But with more and more features coming, we want to make sure that we experiment with them and those features provide customer value."

"There's no such thing as a failed experiment. Every experiment is a learning opportunity, no matter how it goes."

"We can have a lot of opinions, but at the end of the day, it doesn't matter what we think. What matters is what our customers actually do — their behavior."

Ilya Izrailevsky
DoorDash | Senior Engineering Manager of Experimentation

How DoorDash saved millions with one A/B test

Go to S1 | E12

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