Дмитро

STELMASHUK DMYTRO
Frontend developer
[відкрити контакти](див. вище в блоці «контактна інформація»)

LinkedIn

Telegram Kharkiv, Ukraine. Remote

GitHub Can work during blackouts

SUMMARY
As a Frontend Developer with 2 year of commercial experience I work with JavaScript, React and
TypeScript. I have delivered projects ranging from business automation tools and CMS-based
solutions to scalable React applications with REST API integrations.
On my latest project, I designed and implemented the data layer using React Query with server-
side data fetching, caching, and reusable service architecture. I work with Git, Jira and Claude
Code as part of my daily development workflow.

SKILLS
Typescript, JavaScript Algorithms: Solved 50+ katas on
React, Redux-toolkit, MobX CodeWars
HTML5, CSS3, Sass (SCSS), BEM, Material UI, Tailwind, Basic OOP understanding
Shadcn Knowledge of SDLC, Waterfall,
Fetch, REST API, Web sockets, TanStack Query Agile concepts (Scrum, Kanban)
SQL, PostgreSQL CMS: WordPress, OpenCart.
Git Webpack, Vite, Babel, Docker, Eslint, Prettier, English: B1
AirBnB Ukrainian: fluent

WORK EXPERIENCE
FRONTEND / FULL-STACK DEVELOPER Personal & Team Projects | 2023 - 2024 (break) 2025 – present
Developed web applications, business automation tools, and e-commerce solutions for clients
across different industries.
Built responsive React applications and CMS-based websites using React, TypeScript, JavaScript,
WordPress, and OpenCart.
Implemented authentication, multilingual support, search, filtering, pagination, and REST API
integrations.
Designed and implemented a reusable data layer with React Query, including caching and server-
state management for a scalable e-commerce application.
Developed software for OCR-based handwritten text recognition using Tesseract.js, processing
extracted data and exporting results to XML and backend services.
Built web scraping and data-processing solutions using Cheerio, XLSX, and Node.js tools to
automate business workflows and handle large datasets.
Customized CMS functionality with JavaScript, PHP, Twig, HTML, and CSS, including automated
price updates, multilingual support, and custom modules.

OWNER & STORE MANAGER Computer Retail Business | 2015 – 2022
Managed daily operations of a computer retail store, including sales, procurement, inventory
management, and customer support.
Led a team of 10 employees, planned and coordinated daily operations, assigned responsibilities,
and tracked business processes using a CRM system.
 Built long-term relationships with customers and suppliers, negotiated contracts, and resolved
operational issues.
Developed strong skills in leadership, communication, problem-solving, project coordination, and
business decision-making.

PORTFOLIO
BOOK & VIBE STORE — DEMO | GITHUB
React, TypeScript, Supabase, React Query, Shadcn UI
Role: Frontend Developer / Technical Lead
Led the frontend development by defining the project architecture, organizing
the development workflow, and coordinating implementation across the team of 6 developers.
Integrated an AI-powered assistant to help users discover books through natural language
recommendations and personalized search.
Built a reusable server-state layer with React Query, including caching,
query invalidation, and API abstraction.
Integrated Supabase for authentication and database operations.
Optimized application performance through lazy loading, efficient API requests, and Cloudflare CDN.

HOTEL BOOKING APP — DEMO | GITHUB
React, JavaScript, React Query, Material UI, Supabase
Designed and developed the entire application from scratch, including project architecture,
routing, state management, and UI implementation.
Built a complete hotel booking workflow with room browsing, detailed room pages, reservation
management, and user booking history.
Implemented authentication, protected routes, and role-based access for users and administrators.
Developed an administrative dashboard for managing rooms, reservations, and occupancy statistics.
Built responsive interfaces using Material UI and ensured a consistent user experience across devices.

BANG & OLUFSEN LANDING — DEMO | GITHUB
HTML, SCSS, JavaScript
Developed a responsive landing page based on a Figma design with pixel-perfect implementation.
Implemented interactive UI components, animations, smooth scrolling, and responsive navigation.
Ensured cross-browser compatibility and optimized layouts for desktop, tablet, and mobile devices.

OKMASH.COM — DEMO
WordPress, PHP, JavaScript, CSS
Customized WordPress themes and templates according to business requirements.
Developed and maintained multilingual website functionality and customized CMS pages.

EDUCATION
Kharkiv Polytechnic Institute | 2010-2014
Bachelor's Degree in Computer Systems and Networks
• Graduated with above-average academic performance.
• Bachelor's thesis: "Computer Network Security for Enterprise Environments", focused on designing
and evaluating security measures for large business networks.

ADDITIONAL EDUCATION
Remote | 2025-2026
• Full stack course at Mate academy (Git, HTML, CSS, JavaScript, Typescript, React, Web, Node.js).
• Codewars katas.
• Udemy: Learn to Program in Javascript: Beginner to Pro. Javascript Essentials
• Book: Grokking Algorithms.