Andrey Oleynik
Summary
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SeniorAndrey Oleynik is a seasoned backend leader with 13 years of experience building and overseeing backend systems, currently heading Backend Development at Mail.Ru Group. He combines deep hands-on expertise in Python, Java, JavaScript and SQL with practical experience across databases (Postgres, MySQL, HBase), async frameworks (Twisted, Tornado) and a broad set of testing and performance toolchains. His background spans QA leadership and performance profiling—specializing in bottleneck hunting, memory-leak detection and large-scale integration for telco-grade infrastructures (SIP, DIAMETER). Comfortable across Linux and Windows server environments and virtualization platforms, he brings both operational rigor and developer-focused tooling experience. Colleagues benefit from his rare blend of low-level protocol knowledge and pragmatic delivery focus developed at major Russian Internet and telecom projects.
13 years of coding experience
Github Skills (134)
python10
websocket10
intellij-idea10
websockets-client10
mqtt10
editor10
websocket-client10
home-automation10
electron10
typescript10
vscode-extension10
iot10
vscode10
packager10
zigbee10
Programming languages (13)
Github contributions (5)
oleynikandrey/rpmvenv
Jan 2020 - Jan 2022
RPM packager for Python virtualenv.
Contributions:8 PRs, 23 pushes, 5 branches in 1 year 11 months
pythonvirtualenvrpmpackager
onlineconf/onlineconf-python
Oct 2019 - May 2022
Python library for reading OnlineConf files
Contributions:6 PRs, 9 pushes, 3 branches in 2 years 7 months
python
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