Alexey Lopatin
Machine Learning Engineer at Corsearch
Saint Petersburg, Saint Petersburg, France
Summary
👤
Senior🎓
Top SchoolAlexey Lopatin is a Machine Learning Engineer with nine years of experience specializing in recommendation systems and scalable ETL pipelines, currently driving personalization and AI Shopping Assistant features at Constructor. He has a strong track record of shipping production ranking models and infrastructure—delivering measurable lifts in CTR, Add2Cart and engagement while cutting operational costs by up to 50% through pipeline and LLM optimizations. Alexey built high-throughput data stacks using Airflow, Kafka and Postgres that serve millions of users daily, and has implemented graph and video-category models at scale across billion-plus interactions. He combines applied research from an MS in Machine Learning and Data Analysis with hands-on engineering, enabling rapid hypothesis testing via lightweight A/B platforms and config services. Colleagues would note his practical focus on end-to-end delivery: from data validation to feature stores and cost-aware model integration.
10 years of coding experience
5 years of employment as a software developer
Two-year additional education in Data Science & Software Engineering specialization Data Science & Software Engineering, Two-year additional education in Data Science & Software Engineering specialization Data Science & Software Engineering at Computer Science CenterMaster of Science - MS Machine Learning and Data Analysis, Master of Science - MS Machine Learning and Data Analysis at Higher School of EconomicsBachelor's degree Software Engineering, Bachelor's degree Software Engineering at ITMO University
Github Skills (19)
minimum9
collaborative-filtering9
matrix-factorization9
recommender-system8
recommendation-system7
discord-bot6
machine-learning6
react5
css5
discord5
python5
javascript4
approximate2
graph1
approximate-nearest-neighbor-search1
Programming languages (8)
Github contributions (5)
apat1n/LightGCN-Pytorch
Mar 2021 - Apr 2021
Contributions:36 commits, 30 pushes, 1 branch in 24 days
apat1n/vAU
Mar 2021 - Jun 2021
2021 C++ project: implementing client-server based messenger
Contributions:3 reviews, 25 PRs, 38 pushes in 3 months
cppclient-serveraiomessengerc-project
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