Summary
Sergey Popov is a data scientist and machine learning engineer with 9 years of hands-on experience building recommendation systems and production ML pipelines at scale across companies like Yandex, Дзен, Teza Technologies, Ozon Tech, and currently Avito. With a strong applied mathematics background from Saint Petersburg State University and training at Yandex School of Data Analysis, he blends rigorous quantitative thinking with pragmatic engineering, shipping features that grew a new recommendation format to 2M DAU. Sergey has a track record of driving measurable product impact—boosting CTR and likes by double digits, improving diversity via cross-platform signals, and running 50+ A/B tests to validate decisions. Technically versatile in Python, Java, C++, SQL and tools such as ClickHouse, CatBoost, Spark, Kafka and Docker, he thrives at the intersection of model development, feature engineering, and productionization. Colleagues value his user-centered approach and ability to translate research into production systems that move engagement metrics.
10 years of coding experience