Oleksandr Kozyriev
Frontend Developer at Vchasno Group
Kyiv, Ukraine
Summary
👤
Senior🎓
Top SchoolOleksandr Kozyriev is a frontend developer based in Kyiv with over eight years of professional experience and 4.5+ years focused on building and maintaining complex web applications. A React enthusiast who migrated projects to Next.js, he has hands-on experience across web, PWA and mobile stacks, plus practical expertise in SSR, CI/CD, and performance optimization (e.g., cutting build times from 10 minutes to 20 seconds). He’s delivered consumer-facing features like automatic PDF menu generation and multilingual RTL/LTR layouts, and has built analytics UIs, e-signature mobile workflows, and video-transfer protocols for constrained environments. Regularly mentors juniors and leads code reviews, with a track record of modernizing legacy codebases and improving developer workflows. Notably comfortable bridging frontend and backend concerns, he has implemented server-side rendering with Node/Koa and set up GitLab CI pipelines deployed to AWS.
8 years of coding experience
4 years of employment as a software developer
Igor Sikorsky Kyiv Polytechnic Institute
Github Skills (72)
atomic-design9
3d-models9
modeling-tool9
viewer9
react-native-date-time-picker9
materials-informatics9
react-native-datepicker9
datepicker8
threejs8
react8
native-code8
editing8
atomic8
web-application7
datetime7
Programming languages (5)
Github contributions (5)
fluoxe7ine/holdify
Aug 2018 - Sep 2020
Contributions:10 PRs, 56 pushes, 10 branches in 2 years 1 month
otpusk/apisearch-toolbox
Nov 2019 - May 2020
Contributions:102 commits, 32 PRs, 95 pushes in 6 months
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