Sergii Lavrin
Senior Software Engineer at Restream
Lisbon Metropolitan Area Portugal
Summary
👤
Senior🎓
Top SchoolSergii Lavrin is a Senior Software Engineer and product-minded designer with 13 years of experience building complex web and mobile systems across live streaming, gaming, insurance, manufacturing, and education domains. Currently at Restream, he combines front-end, back-end and design leadership to improve live-streaming UX and ship resilient production services. His background blends formal training in software engineering and jurisprudence with hands-on roles from full-stack development to product design, enabling him to align user needs with business outcomes and technical architecture. He has led cross-functional teams, defined domain models and design systems, and delivered offline-first mobile and admin platforms that measurably improved conversion and retention. Based in Lisbon and originally from Ukraine, Sergii also champions civic impact—highlighted by public support initiatives like SpendWithUkraine—bringing a pragmatic, systems-level mindset to challenging, high-impact projects.
13 years of coding experience
12 years of employment as a software developer
Poltava Lyceum No.1Bachelor's degree, Law, Bachelor's degree, Law at Poltava Institute of Business of International Science and Technical UniversityMaster's degree, Jurisprudence, Master's degree, Jurisprudence at International Science and Technical University
English, Russian, Ukrainian, German, French
Github Skills (200)
javascript-client10
amazon-cognito10
testing10
facebook-live10
visual-studio10
robust10
linter10
portable10
cheerio10
client-library10
broadcasting10
browser10
obs10
recording10
minification10
Programming languages (20)
Github contributions (5)
pib-istu/pib.edu.ua
Mar 2020 - Jul 2023
PIB ISTU website
Contributions:32 PRs, 63 pushes, 33 branches in 3 years 4 months
pib
ArmorDarks/completerc
Dec 2015 - Feb 2016
Contributions:2 releases, 43 commits, 12 pushes in 2 months
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