Senior Full-Stack Engineer with 8+ years of experience building production web applications with React, Next.js, TypeScript, and Node.js — from frontend architecture and authentication to APIs, databases, testing, and deployment.
Rakuten Advertising and Rakuten Rewards: performance marketing, cashback and loyalty products. Launched core B2B platforms from scratch across frontend, auth, data and delivery.
Built two core B2B enterprise platforms with React, Next.js (App Router), NestJS, TypeScript, Node.js and layered architecture.
Designed auth with short-lived access tokens and silent refresh via httpOnly cookies; improved PostgreSQL/MongoDB query performance through indexing.
Node.js streaming and Redis-backed server patterns; Docker / Docker Compose; deployments on Vercel, Render and Neon. Mentored engineers and ran technical interviews.
APTEKA24.UA
Frontend Engineer · 2020 — 2021
Electronic medical information system for medication search and pharmacy delivery.
Performance and SEO work via Lighthouse / DevTools audits, bundle optimization and frontend refactoring.
UKRGASBANK
Frontend Engineer · 2019 — 2020
Digital banking dashboards in a regulated environment.
Maintained and enhanced React/Redux banking dashboards and refactored legacy frontend code.
Freelance & contract
Frontend Engineer · 2017 — 2019
Responsive websites and interactive advertising work.
Built responsive sites and interactive mobile advertising banners, galleries and mini-games in native JavaScript (ES6+).