Serhii Siedovolosyi
Senior Software Engineer at GlobalLogic
Warsaw, Masovian Voivodeship, Poland
Summary
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Senior🎓
Top SchoolSerhii Siedovolosyi is a Senior Software Engineer based in Warsaw with over 10 years of experience building and hardening backend systems across security, FinTech, logistics, and enterprise domains. He specializes in API integrations and automation—recently developing complex Python 3.11 connectors for a leading SOAR platform that link CrowdStrike, Azure AD, Jira and other major tools while leveraging generative AI to speed development and improve automation. Equally comfortable in Ruby on Rails, Python and frontend JavaScript, Serhii has a track record of refactoring large monoliths, eliminating N+1 queries, and cutting page load times by up to 50%. He also performs deep security audits and architectural reviews, delivering prioritized remediation plans and hands-on fixes that improve maintainability and reduce technical debt. Known for pragmatic problem solving, he combines performance optimization, async/multithreaded processing and PostgreSQL tuning to keep critical systems reliable at scale.
10 years of coding experience
4 years of employment as a software developer
National Technical University "Kharkiv Polytechnic Institute"
Русский, Украинский, English
Github Skills (28)
grid8
excel8
data-management7
grids7
spreadsheet7
datagrid6
react6
crud6
data-import6
vue-table6
angular5
backend5
vue5
datatable5
typescript5
Programming languages (3)
Github contributions (5)
sedovolosiy/ooniversity_django_courses_03
Nov 2015 - Dec 2015
Contributions:41 pushes in 1 month
sedovolosiy/bootstrapbay
Mar 2016 - Apr 2016
Contributions:39 pushes, 2 branches in 14 days
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