Тарас

CONTACT
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TARAS DEMIANIUK
FULL-STACK DEVELOPER
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Rivne, Ukraine, remote
PROFILE
GitHub, LinkedIn Fullstack Developer skilled in JavaScript, TypeScript, React, and Node.js. Developed a
real-time chat application featuring JWT authentication, Google OAuth, WebSocket
communication, file uploads, and group messaging. Experienced in building frontend
SKILLS and backend systems, implementing CRUD operations, responsive user interfaces, and
efficient data fetching using TanStack React Query. Work with Agile practices using
Typescript, JavaScript
Git, Jira, feature-branch workflow, and code review. Participated in math, English, and
React, Redux, TanStack React Query computer science competitions and received 15+ awards in school competitions.
HTML5, CSS3, Sass (SCSS), BEM,
Material UI, Tailwind PORTFOLIO
Node.js, Express, Socket.io
Real-Time Chat Application – Demo | GitHub Code
Fetch, REST API, JSON
Technologies used: React, TypeScript, Tailwind CSS, Vite, React Router, Socket.io,
SQL (PostgreSQL basics), MongoDB Node.js, Express, MongoDB, Mongoose, JWT, Passport.js, Google OAuth, bcrypt,
Mongoose, Sequelize Zod, Multer, Cloudinary, ImageKit CDN, i18next, React Toastify.
Git Webpack, Vite, Eslint, Prettier Developed a fullstack real-time chat application with private messaging, group
Zod rooms, and live updates using WebSockets (Socket.io).
Implemented a secure authentication system with JWT (access & refresh tokens),
Knowledge of SDLC, Waterfall, Agile
including Google OAuth integration and email verification flow.
concepts (Scrum, Kanban) Built a scalable messaging system with features such as message reactions,
Figma, Canva pinning, editing, search, and pagination.
Jira Designed a fully responsive UI with theme switching (light/dark mode),
Teamwork
localization (i18n), and mobile layout.
Integrated file upload system with avatar management using Cloudinary and
Time Management
ImageKit CDN for optimized image delivery.
Implemented room-based architecture with role-based permissions (room owner
EDUCATION controls for editing and deletion).

React Bookstore – Demo | GitHub Code
Frontend course at Mate academy (Git,
HTML, CSS, JavaScript, Typescript, Technologies used: React, TypeScript, Tailwind, TanStack React Query,
React, Web) Certificate HTML5, CSS, Git, react-toastify, ImageKit CDN.
Collaborated in a team of 5 developers to build a bookstore platform with
reusable UI components (Button, Card, Input, Select, Pagination).
LANGUAGES Implemented responsive BurgerMenu with full-screen overlay and auth-aware
navigation logic.
Ukraine (Fluent) Configured TanStack React Query for structured data fetching with caching and
English (Intermediate)
background updates, reducing redundant API calls.
Developed reusable form primitives with validation support, improving
consistency across the application.
ACHIEVEMENTS Integrated ImageKit CDN for optimised image delivery, enhancing performance
and load times.
Graduated 11th grade with honours.
Prizewinner in school-level chess and Todo App - Demo | GitHub Code
checkers tournaments. Technologies used: React, TypeScript, REST API, HTML5, CSS3, Bulma.
Received a lot of awards in school-
Implemented a task management application with CRUD operations and status-
level scale modelling competitions.
Participated in competitions in based filtering.
mathematics, English, and Informatics Implemented optimised state updates, including single-item and batch
Olympiads(including Bebras). operations (e.g., “mark all as completed”), improving state consistency and
reducing unnecessary re-renders.
Integrated REST API with asynchronous handling and error management.

Landing page - Demo | GitHub Code
Technologies used: HTML5, SCSS(SASS), BEM.
Built a responsive layout for desktop, tablet, and mobile devices.
Implemented modular styling using BEM and SCSS.
Added interactive UI elements and effects (hover, transform: scale for icons and images).