Oleksandr Ulianytskyi
Senior Backend Engineer at Busy Rebel
Kyiv, Ukraine
Summary
👤
Senior🎓
Top SchoolOleksandr Ulianytskyi is a Senior Backend Engineer based in Kyiv with 16+ years building resilient Ruby/Rails systems for markets across Europe and the US. He excels at designing and shipping production APIs and data pipelines—recent projects include a Rails 7 BI API that ingests ClickHouse data and an AI-enabled chatbot testing service. Comfortable across backend, DevOps and architecture roles, he has modernized integrations (e.g., migrating AdWords to Google Ads gRPC) and built mailserver and billing platforms used like SendGrid/Mailgun alternatives. He pairs deep Rails expertise with practical infrastructure skills (Docker, AWS, Terraform) and a history of turning legacy monoliths into maintainable services. Unusually for a senior engineer, his academic background is in chemistry, reflecting a methodical, analytical approach to problem solving.
16 years of coding experience
12 years of employment as a software developer
bachelor Chemistry, bachelor Chemistry at Taras Shevchenko National University of Kyiv
English, German, Українська
Stackoverflow
56reputation
356reached
1answer
0questions
Github Skills (89)
datetime10
editor10
datepicker10
datetimepicker10
electron10
typescript10
vscode-extension10
vscode10
directions10
javascript9
linux9
package-control9
windows9
visual-studio9
microsoft9
Programming languages (7)
Github contributions (5)
asux/vscode-rspec-focus
Aug 2017 - Aug 2020
Add and clear focus mode in RSpec files.
Contributions:2 releases, 4 commits, 2 PRs in 2 years 11 months
visual-studio-coderailsrubyrspecfocus-mode
asux/dotfiles
Nov 2009 - Dec 2022
Contributions:90 commits, 10 pushes in 13 years 3 months
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