Hennadii

HENNADII BIRCHENKO
JAVASCRIPT, REACT DEVELOPER

CONTACT PROFILE
Experienced front-end developer with over 4+ years of expertise in
[open contact info](look above in the "contact info" section)
building web applications. Proficient in React, TypeScript, Redux, and
Ukraine, Cherkassy Redux-Saga. Successfully delivered high-performance projects, created
user-friendly interfaces, and optimized application performance. Looking
LinkedIn for opportunities to work on large-scale projects and grow professionally.
[open contact info](look above in the "contact info" section)

WORK EXPERIENCE
SKILLS
Lazy Ants 2022 - PRESENT
React React Developer
Next.js
Developed a time-tracking application for logging work hours,
React Router generating reports, and managing sessions.
Built a dashboard for team analytics, improving transparency and
TypeScript
productivity.
Redux Implemented team management features, enabling efficient
collaboration.
Redux-Saga
Worked on Web3 projects, including deposit/withdrawal flows and
Web3 smart contract interactions.
GIT Developed a market analysis feature using AI, providing statistical
insights and actionable data.
REST API Integrated REST APIs and ensured smooth front-end/back-end
GraphQL communication.
Optimized app performance, reducing load times and improving
Webpack and Docker
responsiveness.
Jest Wrote unit and integration tests using Jest and React Testing Library.
Participated in code reviews, refactoring, and mentoring junior
Tailwind CSS
developers to maintain scalable and maintainable code.
Styled-Components
Andersen Lab 2022 - 2022
Swagger
React Developer
Storybook
Developed a music streaming platform similar to Spotify, focusing on
Wagmi smooth user experience and high performance.
Rainbowkit Implemented features such as audio playback, playlists, and user
libraries, ensuring seamless navigation and playback.
Viem
IWorked on real-time music streaming with efficient API integration
for fetching and managing track metadata.
LANGUAGES Built responsive and interactive UI components using React and
TypeScript, improving accessibility and user engagement
English (Intermediate) Optimized the application for fast loading speeds and reduced memory
Ukrainian (Native) consumption
Collaborated with back-end developers to integrate RESTful APIs for
user authentication, song recommendations, and playlist management.
Wrote unit and integration tests using React Testing Library to ensure
the reliability and maintainability of the application.