Alexander Osipenko
Staff Machine Learning Engineer at Mozilla
Berlin Metropolitan Area Germany
Summary
👤
Senior🎓
Top SchoolAlexander Osipenko is a Staff Machine Learning Engineer with a decade of experience building and scaling ML systems across search, fintech, cybersecurity, and energy domains. Fluent in Scala and Python, he also experiments in Rust and combines production ML (Spark, BigQuery, AWS/GCP, Kubernetes, Terraform) with hands-on NLP, vector search, and LLM work to power search ranking, query expansion, and real-time anomaly detection. He has led hiring and team-building from scratch, runs technical interviews, and bridges research-to-production pipelines—often shipping complex ETLs, MLOps, and inference services. His background in computational chemistry underpins a data-driven, probabilistic approach to problems like portfolio optimization and preventive maintenance. Based in Berlin, he actively explores ML applications for sustainability and climate while mentoring juniors and driving pragmatic, high-performance solutions.
10 years of coding experience
12 years of employment as a software developer
Bachelor's degree Computational chemistry and biochemistry, Bachelor's degree Computational chemistry and biochemistry at Petroleum Jobs 
English, Russian, German
Stackoverflow
71reputation
6kreached
2answers
1question
Github Skills (100)
dataframes9
music9
rust9
textblob9
python9
polars9
glove9
threaded9
music-generation9
dataframe9
lstm8
twitter8
word2vec8
apache-arrow8
prefix-tree8
Programming languages (5)
Github contributions (5)
subpath/PAIR-finance-assignment
Feb 2020 - Aug 2022
Home assignment for PAIR finance
Contributions:10 PRs, 10 pushes in 2 years 6 months
financepair
subpath/kafka-to-postgresql
Dec 2019 - Aug 2022
Contributions:1 PR, 4 pushes, 1 branch in 2 years 9 months
kafka-connectorkafkapostresqlkafka-consumer
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