Олег

Oleh Charupa
Frontend / Full Stack Developer | React | Node.js | TypeScript
Odesa, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | LinkedIn | GitHub | Telegram

Summary
Frontend / Full Stack Developer with over 3 years of commercial experience in building scalable web applications using React,
TypeScript, and Node.js. Skilled in dashboard development, complex form handling, real-time data integration, and UI
localization. Proficient at integrating RESTful APIs and building micro-services/BFF layers with Node.js/Express. Strong
background in performance optimization and team collaboration across various business and technical domains.

Skills
Frontend: React 18, TypeScript, JavaScript (ES6+), Redux Toolkit, React Query (TanStack), React Router 6. Backend & API:
Node.js, Express.js, REST API, WebSockets (Socket.IO), Axios, PHP, Laravel. State & Forms: Redux Toolkit, React Context,
React Hook Form, Zustand. UI & Styling: Material UI, Tailwind CSS, Chakra UI, Ant Design, HTML5, CSS3, SCSS, Responsive
Design. Data Visualization & Rich UI: Recharts, Chart.js, ECharts. Code Quality & Testing: ESLint, Prettier, Husky, Lint-
staged, Code Review. Tools, Build & DevOps: Git, GitHub Actions (CI/CD), Vite, Webpack, npm/pnpm, Docker (basic),
Postman, Figma.

Experience
Frontend Developer | KaaIoT Technologies | Jul 2021 — Oct 2024
• Developed lightweight Node.js/Express middleware and BFF services for aggregating multi-source API responses,
reducing payload sizes and front-end render times.

• Built custom Node.js mock servers to simulate real-time WebSocket streams and REST endpoints, accelerating frontend
feature delivery.

• Designed configurable dashboard interfaces with draggable/resizable widgets, enhancing usability and reducing
workspace setup time by up to 30%.

• Integrated a Stripe-based billing and subscription UI, improving payment experience reliability.
• Optimized rendering for large datasets with progressive loading and pagination, significantly enhancing perceived
performance on data-intensive pages.

• Built complex form flows with React Hook Form and schema validation, accelerating feature delivery.
• Developed flexible localization architecture (i18n) for easier scaling to multiple languages.
• Mentored junior developers, conducted technical interviews, and performed code reviews to ensure high engineering
standards.
Operations Manager | ZIA LLC, Odesa | Sep 2024 — Aug 2025
• Coordinated operations across marketing, procurement, accounting, and production for a team of approximately 25
employees.

• Established a wholesale sales department and initiated export directions.
• Increased company turnover by approximately 30% within 9 months through process improvement and cross-team
coordination.
City Launch Coordinator | dogChill, Odesa | Nov 2023 — Dec 2025
• Recruited and onboarded service providers, organizing training and operational workflows.
• Managed communication channels between service providers and clients to ensure high quality of service.
Education
Full Stack Developer Program | GoIT | Aug 2020 — Feb 2021
• Led all team projects as Team Lead, coordinating teamwork, Git workflows, and project delivery (HTML, CSS, JS, React,
Node.js, Express, MongoDB).
Chemical Technologies | Open International University of Human Development "Ukraine" | Sep 2012 — Mar
2015
Languages
Ukrainian: Native | English: Intermediate