Ярослав

Yaroslav Berezka
Frontend Software Engineer
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація»)

Summary
Frontend Software Engineer with 1+ year of commercial experience building responsive web
applications using JavaScript, TypeScript, and React.

Experienced in developing and maintaining user interfaces with functional components, hooks,
and state management using Redux Toolkit and Zustand. Worked with REST APIs and WebSocket-
based real-time features, implementing client-side business logic and predictable data flows using
modern tools.

Hands-on experience with CRUD systems, routing, form handling, and reusable UI components
within existing codebases. Focused on clean, maintainable code, careful refactoring, and stable
feature delivery.
Work Experience
NIX
REAL-TIME COMPETITION & EVENT PLATFORM
Frontend Software Engineer
Web-based platform for large-scale online events and real-
02/2025 – 02/2026 time competitions. Features registration, matchmaking, live
sessions, and statistics tracking with a focus on low-latency
updates and stable real-time synchronization.
Key responsibilities:
• Develop real-time frontend features (lobbies,
matchmaking, live game state)
• Build participant statistics and dynamic UI interfaces
• Integrate Phaser 3 for interactive gameplay mechanics
• Manage client-side state using Redux Toolkit
• Integrate REST APIs and WebSocket communication
• Implement authentication and external integrations
(Google OAuth 2.0, Discord API)
• Build reusable UI components and hooks
• Collaborate with backend developers on API contracts
• Participate in code reviews and code quality
improvements
VEHICLE FLEET MANAGEMENT PLATFORM
Web application for managing vehicle records with CRUD
operations, sorting, filtering, and stable client-server
synchronization.
Key responsibilities:
• Implement CRUD functionality and backend
synchronization
 • Develop validated form workflows and data handling logic
• Implement sorting and filtering for large data sets
• Build reusable UI components and custom hooks
SOCIAL NETWORKING PLATFORM
Social web platform focused on user interaction, content
management, and real-time updates.
Key responsibilities:
• Implement user interaction flows and navigation logic
• Manage client-side state and dynamic UI updates
• Integrate REST APIs and real-time WebSocket features
• Develop reusable components and validated workflows
INVENTORY MANAGEMENT WEB APPLICATION
Lightweight web application for managing inventory items
with predictable CRUD workflows.
Key responsibilities:
• Develop user-facing CRUD workflows
• Implement stable client-server data synchronization
• Manage client-side state and routing
• Build reusable UI components

Skills
Frontend Frameworks & Libraries React, Redux, Redux Toolkit, Redux Thunk, Redux Form,
Reselect, Zustand, React Router, i18n
Forms & Validation Formik, React Hook Form, Yup, Zod
UI & Styling HTML5, CSS3, SCSS/SASS, CSS Modules, Styled
Components, Material UI, Bootstrap
APIs & Communication REST API, Axios, WebSocket
Authentication & Integrations Google OAuth 2.0, Discord API
Graphics & Interactive Content Phaser 3
Build Tools & Package Management Webpack, Vite, Create React App, npm, yarn
Testing Tools Jest, React Testing Library
Code Quality ESLint, Prettier, Husky
Mocking & Development Utilities Mock API
Version Control Git
Education
Kharkiv National Automobile Construction and Civil Engineering, Bachelor’s / Master’s
and Highway University degree
2017 – 2024
Languages
English — Pre-Intermediate | Ukrainian — Native | Russian — Native