Євгеній

Yevhenii Zheliznyk
Full Stack Developer
[відкрити контакти](див. вище в блоці «контактна інформація») · [відкрити контакти](див. вище в блоці «контактна інформація») · [відкрити контакти](див. вище в блоці «контактна інформація») · https://github.com/mkupx ·
https://freelancehunt.com/freelancer/Zheka0_1.html · https://weblancer.net/users/Zheka_web/ · Ukraine · Remote

SUMMARY
Full stack developer with 1.5 years of commercial experience: product web applications with React 19, Next.js 16, TypeScript and Node.js,
plus 10+ delivered freelance orders rated 5.0/5. Strongest on the frontend and performance (Core Web Vitals, bundle optimization), with
hands-on REST API, SSR, authentication and server-side integration work.

PROFESSIONAL EXPERIENCE
Frontend Engineer — ObserviX
01/2026 — Present · Ukraine (Remote)
Built the marketing site from scratch on Next.js 16 (App Router, SSR): semantic markup, structured data, SEO optimization
Cut the JS bundle by ~70% (deep imports instead of barrel imports) and the client-side i18n payload from 296KB to 10KB via
namespace splitting
Implemented platform internationalization across 20+ locales (next-intl); built responsive UI components with Tailwind CSS 4
Developed hero and landing page animations with GSAP + Split Type, increasing user engagement
Frontend Developer — Freelance
02/2025 — 12/2025 · Remote
Delivered 10+ commercial orders on Freelancehunt and Weblancer: landing pages, e-commerce and corporate sites. Freelancehunt
— 5.0 rating (3 projects), Weblancer — 8 reviews at 5/5
Built client sites from Figma/PSD designs: Finance Flow, GoTrieop (travel service), Olonge, Interno — semantic markup, BEM,
responsive
Integrated markup into WordPress: custom themes, ACF fields, plugin configuration, PHP; ported scripts from legacy landings to new
builds
Optimized load speed to Lighthouse 90+ on mobile: CSS/JS minification, lazy loading

KEY PROJECTS
ObserviX Platform
Marketing analytics SaaS platform (commercial project)
Analytics platform frontend: marketing site, portal components, i18n, SEO, animations. Next.js 16, React 19, TypeScript, Tailwind CSS 4,
GSAP, Zustand
Bazarchik
Classifieds marketplace (paired with a backend developer)
SPA with authentication, search, dashboard and CRUD. React 19, React Router 7, Axios, SCSS, Swiper, Vite
LearnUA
Online course platform (paired with a backend developer)
Education platform (Feature-Sliced Design): auth with refresh tokens, multi-step course editing, dark theme, unit tests. TypeScript, React
19, Tailwind CSS 4, DaisyUI, Formik + Yup, Motion, Vitest, Testing Library

TECHNICAL SKILLS
Languages: TypeScript, JavaScript (ES6+), HTML5, CSS3, PHP
Backend, State & Data: Node.js, REST API, Zustand, TanStack React Query, React Context, Zod, React Hook Form, Formik, Recharts
Frameworks & Styling: React 19, Next.js 16, WordPress, Tailwind CSS 4, SCSS / SASS, Bootstrap, BEM, Radix UI, shadcn/ui,
Storybook
Animation & Tooling: GSAP, Split Type, Framer Motion, CSS Animations, Git, Vite, Webpack, Gulp, ESLint, Prettier, Yarn Workspaces,
Figma
Practices & Testing: SEO, Core Web Vitals, Lighthouse, i18n (next-intl), NextAuth.js, MDX, responsive design, accessibility, Playwright,
Vitest
Practices: Cross-browser compatibility, API integration, unit testing

LANGUAGES
Ukrainian (Native), English (B1–B2 (Intermediate))