a message from earth

Dmytro Bielienov, Senior Full-Stack Engineer. hello fellow galaxy member

a message from earth

i build software

Senior Full-Stack Engineer in Ukraine, building web products since 2013. Frontend first — React and Next.js — and at home across the stack with Node.js, NestJS and PostgreSQL when the product needs it.

Complex systems from architecture to production support, with a strong focus on testing (Cypress, Playwright, Storybook), code review and mentoring — and Claude Code and Codex every day to ship faster without lowering the bar. In my spare time I write on Medium and take courses.

Download CV

my projects

Project1 : Hungry Reef

Android game

A fish eat fish arcade game: eat anything smaller, grow through three sizes and escape the predators. Twelve levels in three ocean zones, a boss at the end of each, and it plays offline.

view project →all projects →

my skills

Here is a list of some of my skills

Frontend: React
Next.js
TypeScript
JavaScript
Tailwind CSS
shadcn/ui
Styled-Components
Zustand
Zod
Apollo / GraphQL
Feature-Sliced Design
Backend: Node.js
NestJS
Express
GraphQL
PostgreSQL
Prisma
Drizzle ORM
MongoDB
Docker
Mobile: React Native
Flutter
Capacitor
Data & ML: Python
Django
pandas
NumPy
scikit-learn
matplotlib
Testing: Cypress
Playwright
Unit & integration testing
Storybook
AI tools: Claude Code
Codex
LLMs
Generative AI
Process & tools: Scrum
Kanban
Jira
Linear
Confluence
Notion
Slack
GitHub / GitLab
Figma
Practices: Code review
Clean architecture
Performance optimization
Testing
Mentoring

my work experience

ITRDev — Full-Stack Developer

March 2023 — present · Ukraine · Remote

Features end to end — from requirements and technical design to release and production support — across a Next.js front end and a NestJS back end. The place FSD Guard grew out of.

Next.js and TypeScript front ends: SSR/SSG, Zustand, Apollo / GraphQL, Zod and a shared component library.
NestJS services and APIs with DTO validation, authentication and role-based access; PostgreSQL schemas through Prisma and Drizzle.
End-to-end tests in Cypress and Playwright on every pull request, unit and integration tests, and Storybook for the UI library.
Code reviews, onboarding, architecture decisions and estimation with the product team; performance work on bundle size, Core Web Vitals and API response times.
Claude Code and Codex every day, with every AI-written change reviewed to the same bar as hand-written code.