Demyd Hanenko — Developer Portfolio

DemydHanenko

Web Dev

UI·UX

Mobile

About

I'm a full-stack developer who enjoys turning complex problems into simple, elegant solutions — performant web apps, clean code, thoughtful UX.

When I'm not coding, you'll find me exploring new tech, contributing to open-source, or leveling up through side projects.

Experience

10+ years

Education

Computer Science & AI

Status

Open to offers

Résumé

Download CV

Selected Work

La Rosa de Sarón

The website of a dulcería & pastelería in Torrevieja, Spain — custom cakes, artisan sweets, breakfasts, and coffee. A hand-coded static site with zero framework overhead: semantic HTML, vanilla CSS and JavaScript, self-hosted fonts, and responsive WebP images, deployed on Vercel. It posts near-perfect Google PageSpeed scores — 100 performance on desktop, 99 on mobile, and 100 for SEO and best practices — meaning instant loads and strong search visibility.

HTMLCSSJavaScriptVercel

Visit Site

Fiesta Alert

A Telegram bot for the Ukrainian community in Spain that sends reminders about upcoming holidays — national, regional, and city-level, plus local festivals. Users pick their region and city and get notified 7 days ahead, 1 day ahead, and on the day itself, in private chats or groups.

Node.jsTelegram Bot APISupabaseZodVitest

Open Bot

Maryna Voroshylo Art

The online gallery and store of a contemporary oil painter — a bilingual (EN/UA) storefront selling original paintings and limited prints. Custom WordPress/WooCommerce build styled with Tailwind, with timed print releases and monobank payment integration, taken end to end from design to launch.

WordPressWooCommerceTailwindmonobank

Visit Site

Plus more projects built under NDA or as part of in-house product teams — not listed here for confidentiality reasons.

Your new project

Have an idea worth building?

I design and develop fast, modern websites and web apps — tailored to your brand, crafted with care, and engineered to last.

Stack

Frontend

React / Next.js / TypeScript / Tailwind CSS / SCSS / Framer Motion / Web3 / ethers.js / Wagmi

Backend

Node.js / Laravel / PostgreSQL / MongoDB / Prisma / REST APIs / GraphQL / WebSockets

Tools & DevOps

Git / Docker / AWS / Vercel / CI/CD / Linux / Figma

Other

English C1 / Testing / Agile / Scrum / UI/UX Design

Contact

Let's work together.

Got something interesting in mind — a new role, a freelance project, or a collaboration? Find me everywhere as @eisenheim94.

ganenko94@gmail.com