Особисті дані приховані

Rostyslav Lytvynenko
Web Developer
Kyiv, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | github.com/R3ndrex

About
Frontend developer with experience building full-stack applications using React, TypeScript, and Next.js. Developed
production-grade features including authentication, REST API integration, and role-based access control. Focused on
scalable architecture, reusable components, and testing.

Experience
Frontend Developer August 2024 – Sep 2025
Unilink Remote
– Developed reusable UI components in Next.js, reducing page development time by 25%.
– Integrated 6+ REST API endpoints, improving data consistency and reducing frontend errors by 20%.
– Resolved 40+ production issues, decreasing UI regressions by 30%.
– Coordinated with 4 frontend devs on shared component library and coding standards

Projects

AQI Check | React, Next.js, MongoDB, NextAuth.js GitHub Jan 2025 – Apr 2025
– Built full-stack web app for real-time Air Quality Index monitoring using Next.js.
– Implemented authentication with NextAuth.js, JWT, bcrypt, and protected routes.
– Designed MongoDB schema for time-series AQI data with indexing.
– Deployed via Vercel CI/CD for fast global delivery.
Members Only | Node.js, Express, PostgreSQL GitHub Apr 2025
– Developed role-based messaging platform (admin, member, guest).
– Implemented authentication with Passport.js, sessions, and bcrypt.
– Designed relational schema in PostgreSQL with optimized queries.
– Added validation using express-validator for secure input handling.
ShopFlow | React, TypeScript, Tailwind CSS GitHub Mar 2025 – May 2025
– Built e-commerce app with routing, pagination.
– Separated logic via custom hooks to improve maintainability.
– Achieved 90%+ test coverage using Vitest and React Testing Library.
– Containerized app using Docker for consistent environments.

Education
State University of Trade and Economics Sep. 2025 – May 2029
Bachelor’s Degree in Software Engineering Kyiv, Ukraine
ISTU College Sep. 2020 – May 2025
Associate Degree in Software Engineering Kyiv, Ukraine
Skills
Languages: JavaScript, TypeScript, HTML5, CSS3
Frameworks & Libraries: React, Next.js, Express, React Router, Tailwind CSS, Redux Toolkit
Databases: MongoDB, PostgreSQL
Testing: Vitest, React Testing Library, Jest
API & Networking: REST API, Fetch, Axios
DevOps & Tools: Git, GitHub, Docker, Vercel, Postman
Other: Figma (basic), Responsive Design, Troubleshooting
Soft Skills: Collaboration, Problem Solving, Debugging