Олег

OLEH KOTSIUBKO
Front-End Developer · React & TypeScript Specialist · AI-Assisted Engineering
Kyiv, Ukraine · [open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · Telegram: @olegkotsubko
github.com/OlegKotsubko · [open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
Front-End Developer with 5+ years of experience building high-performance web applications with
React and TypeScript. Strong expertise in front-end architecture, component design, and leading
development teams. Expanding into full-stack development with Next.js, Node.js, REST APIs, and database
tooling (Drizzle ORM, Neon). Actively leverages AI-assisted development (Claude Code) to ship faster and
explore new technologies. Passionate about impactful products — including volunteer work supporting
Ukrainian defenders.

EXPERIENCE

Weplay Studios | Front-End Lead Developer | May 2018 – Present · Kyiv
Stack: React, Redux Toolkit, TypeScript, GSAP, Socket.io, Chart.js, Storybook, SCSS, Webpack, Vite

▸ Lead front-end developer for a suite of esports ecosystem platforms reaching millions of users globally.
▸ Architected and built complex, high-performance UIs including real-time dashboards, live data feeds via
Socket.io, and animated experiences with GSAP.
▸ Introduced and maintained a Storybook component library, significantly improving team velocity and
design consistency.
▸ Mentored junior and mid-level developers through code reviews, pairing sessions, and internal
documentation.
▸ Collaborated closely with backend team on API integration; contributed to backend logic and REST API
design when needed.
▸ Key projects: weplay.tv, dashfight.com, wpmerchandise.com, techiia.com

Kolo Fundraising | Front-End Developer (Volunteer) | 2023 – Present · Remote
Stack: React, Node.js, Django, Python

▸ Volunteered as a front-end developer for a platform supporting Ukrainian defenders through fundraising
and logistics.
▸ Built and maintained React features; worked alongside backend engineers using Node.js and Django,
gaining practical full-stack exposure.
▸ Coordinated digital campaigns and delivered technical improvements under active wartime conditions.
▸ koloua.com

WebVision | Front-End Developer | 2017 – 2018 · Dnipro
Stack: HTML5, SCSS, jQuery, Bitrix CMS

▸ Built responsive, cross-browser layouts for client projects on Bitrix CMS.
▸ Worked in close collaboration with UI/UX designers and backend developers.

Local Agency | Junior Markup Developer | 2016 – 2017 · Dnipro
Stack: HTML, SCSS, Jade (Pug), WordPress, OpenCart

▸ Built templates for WordPress and OpenCart, focusing on cross-browser compatibility and performance.

PET PROJECTS
TypeRacer Full-Stack App — Multiplayer typing speed game
Stack: Next.js (App Router), Node.js, REST API, Drizzle ORM, Neon (serverless Postgres)
Tooling: Claude Code, AI-assisted development, Render (deployment)

▸ Built a full-stack multiplayer typing speed game from scratch, handling both front-end and back-end
independently.
▸ Designed and implemented a REST API with Node.js, connected to a serverless Postgres database
(Neon) via Drizzle ORM.
▸ Used Next.js App Router for server-side rendering and routing; deployed on Render.
▸ Developed with AI-assisted workflows (Claude Code) — demonstrating ability to ship full-stack features
beyond primary front-end expertise.
Live: typeracer-fullstack-app.onrender.com · GitHub: github.com/OlegKotsubko/typeracer-fullstack-app

SKILLS & TECHNOLOGIES

Front-End: React, TypeScript, JavaScript (ES6+), Redux Toolkit, Next.js, GSAP, SCSS, Storybook, Vite,
Webpack, Gulp, Pug
Back-End & Databases: Node.js, REST API, Drizzle ORM, Neon (Postgres) — basic; Django/Python —
basic exposure
Tooling: Git, Figma, Vite, Webpack
AI & Productivity: Claude Code, AI-assisted development

EDUCATION & CERTIFICATIONS

▸ Pryazovskyi State Technical University — Bachelor's Degree
▸ Level Up Academy — Junior Front-End Developer (Mar–Jun 2015)
▸ IMT Academy Group — Advanced JavaScript Course (Nov 2015–2016)

LANGUAGES

▸ Ukrainian — Native
▸ English — Intermediate (B1)