Alexander Chermenin
Data Engineer
Perm, Perm Krai, Russia
Summary
👤
Senior🎓
Top SchoolAlexander Chermenin is a Data Engineer with 11 years of experience building and operating big data pipelines and analytics platforms, currently driving data work at OK.RU. He has deep hands-on expertise across Hadoop, Spark, Flink, Hive and a history of processing diverse logs and telemetry with ELK/Graphite/Grafana for visualization and monitoring. His background spans backend Java/Scala development, contributions to Apache Flink and Bahir, and notable open-source work on Twitter’s chill library improving Kryo serialization and test coverage. Comfortable across languages from C++ and Haskell to Python, Alexander combines long-term curiosity—programming since age eight—with practical production delivery at companies like Wrike and EPAM. Based in Perm, Russia, he blends low-level serialization fixes and optimizations with higher-level data engineering design, making him effective at turning messy raw data into actionable insights.
11 years of coding experience
11 years of employment as a software developer
Specialist, Information systems and technologies, Specialist, Information systems and technologies at Perm State Agricultural Academy
English
Stackoverflow
838reputation
88kreached
29answers
2questions
apache-flink
top-5%
Github Skills (15)
scala10
javas10
data-serialization10
lib10
kryo10
java10
serialization10
testing9
apache-flink9
flink-streaming6
apache-spark6
maven6
collections6
flink-cep6
linked-list6
Programming languages (11)
Github contributions (5)
twitter/chill
Aug 2016 - Nov 2016
Scala extensions for the Kryo serialization library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 2 PRs, 4 comments in 2 months
Contributions summary:Alexander primarily focused on enhancing the `chill` library, which provides Scala extensions for Kryo serialization. Their contributions involved fixing bugs related to primitive types and array serialization within the Java implementation. Furthermore, they added optimizations and implemented tests to ensure the library's functionality. The user also added support for unmodifiable collections and upgraded the project to Kryo 4.0.0.
serializationserialization-libraryscalaextensionskryo
chermenin/spark-states
Aug 2018 - Feb 2022
Custom state store providers for Apache Spark
Contributions:1 release, 3 reviews, 20 commits in 3 years 6 months
providersapachesparkscalaapache-spark
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