Олег

Oleh Volostnykh
[відкрити контакти](див. вище в блоці «контактна інформація»)| [відкрити контакти](див. вище в блоці «контактна інформація») | LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація») | GitHub: olegvol15
EDUCATION​ ​ ​ ​
Wroclaw University of Economics​ ​ Wroclaw, Poland
B.S in Business Informatics​ ​ Expected Graduation, May 2026
o​ Concentrations: Web & Mobile Application Development
o​ GPA: 4.67/5.00
o​ Related Coursework: Web & Mobile Application Development, Internet Application Development, User
Interaction Design, Object-Oriented Programming, Database Design & Management, Business Intelligence,
Artificial Intelligence & Machine Learning, Information Systems Security, System Analysis & Design.
EXPERIENCE​ ​ ​ ​
IT-STEP Academy​ ​ ​ Remote
Frontend Developer Trainee​ ​ ​ May 2024 – August 2025
●​ Built responsive web interfaces using React.js, JavaScript (ES6+) improving UI usability by 20–30%.
●​ Integrated REST API endpoints into React applications, reducing data-loading times by 30% through optimized
fetching, caching patterns, and improved error handling.
●​ Developed 30+ reusable components and custom hooks, decreasing feature development time by 20%.
●​ Enhanced mobile responsiveness and visual consistency using Tailwind CSS, boosting mobile UX scores by 20%.
●​ Collaborated in Agile/Scrum teams with Git/GitHub, participating in weekly sprints and code reviews, leading to a 15%
improvement in delivery predictability and code quality.
Elladium Holding​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Remote
Frontend Developer​ ​ ​ ​ ​ ​ ​ ​ ​ ​ August 2025 - Present
●​ Developed core frontend features for Xollo using React, TypeScript, Zustand, React Query, and Tailwind CSS.
●​ Built reusable UI components, reducing development time for new features by 25% and improving performance
through hooks, memoization, and client-side caching.
●​ Optimized API data workflows with React Query reducing unnecessary network requests by 40%.
●​ Collaborated with product, backend, and design teams in an Agile/Scrum environment.

PROJECTS ​ ​ ​ ​
Eventix - Ticket Service Platform​ ​ ​ Wroclaw, Poland
Team Lead​ ​ ​ ​ GitHub
●​ Developed a ticket-service web platform allowing users to browse, search, and purchase event tickets via a clean,
responsive UI built with React.js, JavaScript, and Tailwind CSS and Java for backend services.
●​ Built responsive UI components with React and CSS, improving layout consistency and mobile usability by 30%.
●​ Designed efficient client-side data flows (fetching, caching, updating), reducing redundant API calls by 40%.
●​ Applied Git/GitHub for version control, Agile/Scrum for development workflow, and planned advanced features
including product reviews, order management, admin panel (CRUD), and payments with Stripe/PayPal.

ACTIVITIES AND CERTIFICATIONS ​ ​ ​
Codecademy​ ​ ​ ​ Remote​
Boot Camper​ ​ ​ ​ May 2025 – August 2025
​ Completed intensive training in web development: HTML5, CSS3, JavaScript (ES6+), TypeScript, React.js, Node.js,
Express.js, REST APIs, Git/GitHub, Tailwind CSS.
IT-STEP Academy​ ​ ​ ​ Remote
Team Member​ ​ ​ ​ June 2021 – 2025
Completed training in web development technologies including HTML5, CSS3, JavaScript, TypeScript, React, Angular.
SKILLS​ ​ ​ ​
Programming: JavaScript (ES6+), TypeScript, React.js, React Router, HTML5, CSS3, Vite, Tailwind CSS, Redux, Zustand
Tools: Git/GitHub, Docker, Axios, Postman, CI/CD, Jest, React Testing Library, ChatGPT, Claude, Gemini, Lovable, MUI, Ant
Languages: English, Russian, Polish, Ukrainian