Portfolio · Full-stack developer

Anton Duchenko

Looking for a developer who ships? His notice hangs in a tavern at the end of a forest path. The trail is a short 3D scene with sound — under a minute, and you can skip the walk.

Headphones recommended

Tuning
Moon outside—
Fog outside—
Tavern light—
Fly-in, s—
Volume—
Forest: high cut—
layers:

Wanted · for building the whole thing

Anton Duchenko

Full-stack developer

I build web products end to end — from the database schema and the API to the interface people actually touch. Two years of shipping TypeScript, React and Node.js in product teams, most recently on a content-heavy platform with a 10,000-item admin and on an AI-powered language-learning app.

2+ years
shipping to production
+45%
session time, AI features
60%
faster queries on 1M+ rows
10,000+
entities in one admin

Ukraine · works remotely · English: upper-intermediate

Read the tale

Chapter I

The Tale

About me

I like owning the whole path of a feature: working out the problem with designers and product managers, shaping the data model, writing the API and polishing the interface until it feels effortless. I care about speed you can measure — faster queries, lighter pages, fewer steps for the user — and about code the next person can pick up without a tour.

My first degree is in something else entirely: I trained as an electro-technical officer at the Kherson State Maritime Academy. I moved into software through Mate Academy in 2022–2023 and have been building products ever since.

Chapter II

The Quest Board

Selected work

Binary Studio · 2025 — now

Releaf

Customer-facing site and internal admin for Releaf’s German market. I work across the stack: a data layer on Drizzle ORM with caching that cut page load times by 30%; a Sanity CMS setup that lets non-technical colleagues publish product information, blog posts and compliance documents on their own; and an inventory admin on TanStack Table and Router that filters, sorts and pages through 10,000+ records.

  • TypeScript
  • React
  • TanStack
  • Drizzle ORM
  • Sanity
  • Tailwind CSS
  • shadcn/ui
Visit releaf.com

Nitrix Soft · 2025

The Levels

An AI-powered language-learning platform. I built backend APIs and the React front end for its major releases, and integrated OpenAI and Azure Speech into the learning experience — features that raised average session time by 45% and retention by 25%. On the data side, new indexes and reworked queries made lookups over 1M+ records 60% faster.

  • React
  • Node.js
  • OpenAI API
  • Azure Speech
  • SQL
Visit thelevels.me

Team project

Phone Catalog

An online phone store built with a small team: a React and TypeScript single-page app with a product catalogue, product pages, a cart and favourites. A lesson in splitting one codebase between several people — shared components, code review and agreed conventions.

  • React
  • TypeScript
  • Team work
Open the catalog

Chapter III

Journeys

Experience

  1. Aug 2025 — now

    Full-stack developer · Binary Studio

    • Drizzle ORM queries with smarter fetching and caching — page loads 30% faster.
    • A responsive, mobile-first design system on Tailwind CSS and shadcn/ui.
    • Sanity CMS so the team edits products, blog posts and compliance docs without developers.
    • Admin tables on TanStack Table and Router: filtering, sorting and pagination over 10,000+ entities.

  2. Mar — Aug 2025

    Full-stack developer · Nitrix Soft

    • Backend APIs built for performance, uptime and fast responses.
    • OpenAI and Azure Speech in a language-learning platform — session time +45%, retention +25%.
    • Indexes and query tuning on 1M+ record datasets — 60% faster queries.
    • React front ends for major, AI-driven product releases.

  3. Jan 2024 — Mar 2025

    React developer · Maxopen Studio

    • Launched a peer-to-peer marketplace on the TON blockchain — 200+ active users in its first month.
    • TON Connect payments: 500+ secure transactions a day at 99.9% uptime.
    • Leaner API integration and data flow — 20% faster loads, +15% conversion, lower bounce rate.
    • A library of reusable React components — features delivered 30% faster.

Chapter IV

The Armoury

Skills

Languages

  • TypeScript
  • JavaScript
  • SQL

Front end

  • React
  • Astro
  • TanStack Start
  • TanStack Router
  • TanStack Table
  • Redux
  • Tailwind CSS
  • shadcn/ui
  • Sass
  • Bulma
  • BEM

Back end & data

  • Node.js
  • NestJS
  • Express
  • REST
  • GraphQL
  • tRPC / oRPC
  • PostgreSQL
  • MySQL
  • Drizzle ORM

AI & integrations

  • OpenAI API
  • Azure AI Speech
  • Prompt engineering
  • Sanity CMS
  • TON Connect
  • Git & GitHub

Chapter V

Guild Records

Education

2022 — 2023

Mate Academy

Full-stack development: JavaScript, TypeScript, React and Redux, with a focus on responsive, pixel-perfect interfaces.

2013 — 2019

Kherson State Maritime Academy

Master’s degree, electro-technical officer.

Epilogue

Send a Raven

Contact

Have a quest in mind? The quickest way to reach me is email or Telegram.