Personal information hidden

Rostyslav Lytvynenko
Frontend Developer
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | github.com/R3ndrex | Kyiv, Ukraine

Summary
I have 1+ year of commercial experience as Frontend Developer in IT. Skilled at turning designs into reusable, well-tested
components and wiring REST APIs for consistent, reliable UX. I like Frontend and I want to develop further in it.

Hard Skills
Languages: JavaScript, TypeScript, HTML5, CSS3
Frameworks & Libraries: React, Next.js, Node.js, Express, React Router, Tailwind CSS, Redux Toolkit
Databases: MongoDB, PostgreSQL
Testing: Vitest, React Testing Library, Jest
DevOps & Tools: Git, GitHub, Docker, Vercel, Postman, Figma

Languages
Ukrainian: Native
Russian: Native
English: B2 (Upper-Intermediate)

Work Experience
Frontend Developer May 2025 – Present
Unilink Remote
• Engineered 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 bugs, decreasing UI regressions by 30%

• Led standardization of shared component library across 4-person frontend team, improving codebase consistency

Projects Experience
AQI Check | Next.js, React, MongoDB, NextAuth.js Jan. 2025 – Apr. 2025
• Built a full-stack air quality monitoring app with real-time AQI data using Next.js

• Implemented authentication with NextAuth.js, JWT, bcrypt, and protected routes

• Created MongoDB models for users, stations, and AQI-related data

• Deployed the application on Vercel; source on GitHub

Members Only | Node.js, Express, PostgreSQL Apr. 2025
• Built a role-based messaging app with admin, member, and guest permissions

• Implemented session-based authentication using Passport.js and bcrypt

• Designed PostgreSQL tables for users, messages, roles, and membership status

• Added server-side validation with express-validator for forms and user input; live on Vercel

ShopFlow | React, TypeScript, Tailwind CSS, Vitest Mar. 2025 – May 2025
• Built an e-commerce frontend with product listing, routing, and pagination

• Created reusable components for product cards, layout, filters, and UI states

• Moved repeated logic into custom React hooks to keep components cleaner

• Added unit and component tests using Vitest and React Testing Library; source on GitHub

Education
State University of Trade and Economics Kyiv, Ukraine
Bachelor’s Degree in Software Engineering
International University of Science and Technology College Kyiv, Ukraine
Associate Degree in Software Engineering