Konstantin Grabar is a Senior Product Manager with 14 years of engineering and product leadership experience, currently shaping Experimentation & Decision Science at Coupang from Seoul. He combines deep technical fluency (Ruby, JS, Python, Go) with strong ML and data-platform expertise, having led Flo Health’s Data Platform that scaled to 50M users and 3B daily events and an Experimentation Service running 2k+ annual tests. His background spans AdTech and HealthTech, where he built high-load analytics, UA optimization, and monetization products while introducing sequential testing, feature toggles, and robust data governance. A hands-on leader of cross-functional teams (8+ years, 10+ people), he bridges product strategy, A/B testing, and data science to deliver measurable business impact like LTV prediction and revenue-protecting quality controls. Not obvious from titles: he routinely blends low-level systems thinking (ClickHouse/Redshift/Databricks) with user-centered product practices (CJM, JTBD, CustDev) to turn complex analytics into usable internal products.
14 years of coding experience
13 years of employment as a software developer
Master's Degree Computer Science, Master's Degree Computer Science at Saint Petersburg State Marine Technical University
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