Danylo

DANYLO DZHYZHULA
Frontend / Mobile Developer (React, React Native, Next.js) → Full-Stack (Node.js, TypeScript)
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Vinnytsia, Ukraine
GitHub | LinkedIn

SUMMARY
Frontend/Mobile developer with 5 years of commercial experience in React, React Native and Next.js, including core work on a European
social network with 200,000+ active users. Building full-stack skills through personal projects (Node.js, TypeScript, Express, PostgreSQL,
Cloudflare Workers), developed with AI coding agents (Claude Code, Codex, Copilot, Gemini); some of them are live.

SKILLS
Core: React, React Native / Expo, Next.js, TypeScript, JavaScript (ES6+)
Backend (personal projects): Node.js, Express, grammY, REST API, PostgreSQL, SQLite, Supabase, JWT auth, Zod
State Management: Redux / Redux Toolkit
UI & Styling: HTML / CSS / SCSS / SASS, Tailwind, Chakra UI, Material UI, Tamagui, Figma
Testing & Quality: Jest, Vitest, Cypress, React Testing Library, ESLint, Prettier
Tools & DevOps: Git / GitLab / GitHub Actions (CI/CD), Docker, Cloudflare Workers, Monorepo (pnpm), Postman, GA4, Jira / Slack / Trello
AI: Claude Code, Codex, GitHub Copilot, Gemini, LLM APIs (OpenAI), speech-to-text / TTS, AI image generation

WORK EXPERIENCE
Middle React Native Developer — Snotor March 2025 – September 2026
Core frontend/mobile contributor to a European social network platform serving 200,000+ active users.
Led a full website redesign (visual design and content) and integrated GA4 analytics (events, conversions).
Built and owned a key module of the mobile app end to end: the feed, business profiles and posts.
Designed and implemented the complete onboarding flow for new app users.
Contributed to codebase refactoring and shipped new features across the product.
Strong Junior → Middle Web/Mobile Developer — RubiDT January 2022 – October 2024
Delivered five production projects: two React Native mobile apps and three React / Next.js websites.
Co-designed the architecture of two large-scale projects with the lead architect.
Built the client side of crypto-exchange platforms (web and mobile): order forms, real-time prices and charts.
Implemented biometric authentication (Face ID / Touch ID) and two-factor authentication (2FA).
Protected the app in the background state: screen masking and auto-lock.
Mentored a junior developer; worked in Scrum (daily stand-ups, sprint planning).
Junior Web Developer — GoldDev January 2021 – January 2022
Built multiple websites from scratch with React; extended and improved Shopify plugin functionality.
Career break — self-directed study October 2024 – March 2025
Personal projects in React, React Native and Node.js.

FULL-STACK PROJECTS (personal; built with AI agents, some live)
Moodle Deadlines — live web app + Telegram reminders bot · GitHub · live
TypeScript front-end plus a Cloudflare Workers + D1 backend: cron-driven reminders in Telegram, encrypted token storage, per-address
rate limiting, custom anonymous analytics.
Auto-deploy from main via GitHub Actions with automatic DB migrations; unit and e2e tests.
TalkMate — Telegram bot for English speaking practice · live: @talkmate_practice_bot
Node.js / TypeScript, grammY, OpenAI (LLM with structured outputs, speech-to-text), Cartesia TTS, SQLite; 250+ Vitest tests; Docker
deployment.
Voice and text conversation with AI corrections, missions, progress stats and spaced-repetition vocabulary; Telegram Stars
subscriptions planned.
Full Telegram Mini App (Vite + TypeScript) for users, plus an admin analytics Mini App with Telegram auth.
Drive CRM — AI SMS CRM for a car salesperson (in development)
Next.js, Supabase (Postgres with row-level security, multi-tenant-ready), Twilio, OpenAI: AI replies automatically and hands off to a
human on price and financing questions; STOP opt-out and quiet-hours compliance built in.
Other projects — more full-stack and backend projects available on request

ADDITIONAL
Freelance: 10+ business landing sites built solo, from requirements to deployment.
Agentic coding: Claude Code, Codex, Copilot and Gemini for features, refactoring, tests and review; rules files (CLAUDE.md) and
structured task briefs for consistent output.

EDUCATION
Vinnytsia IT Academy 2020 – 2021
Vinnytsia Technical Vocational College (VTVC) 2017 – 2020

LANGUAGES
Ukrainian (native), English (B1)