Frontend
Responsive, accessible interfaces built with clean component architecture and close attention to performance.
- React
- TypeScript
- JavaScript
- HTML5
- CSS3
- Tailwind CSS
- Vite
Frontend & Full Stack JavaScript Developer · Netherlands
I build complete web applications, front to back.
Modern interfaces, practical backend systems, and clean JavaScript architecture—built to solve real problems with performance and detail in mind.
React + TypeScriptFrontend
Node + ExpressBackend
Clean & responsiveApproach
Development stack · CurrentLearning
Full stackFrom responsive interface to API and database.
Build qualityClean code · Real solutions
01 — Profile
Thoughtful web development from interface to database.
I’m Serhii, a JavaScript developer in the Netherlands who enjoys building complete web applications.
My focus is modern frontend development, clean code, responsive interfaces, and full-stack JavaScript. I like taking a real problem from idea to working product—designing the UI, connecting APIs, structuring the backend, and making the final experience fast and reliable. I keep learning, refining my process, and paying attention to the details users actually feel.
EnglishUkrainianRussianBasic Dutch
01
Solve the real problem first.
02
Keep the code clear and maintainable.
03
Make every screen responsive and fast.
02 — Capabilities
A deliberately modern toolkit.
Backend
Complete JavaScript backends with secure authentication, structured data, and practical REST APIs.
- Node.js
- Express.js
- Prisma
- REST API
- PostgreSQL
- SQLite
- JWT Authentication
Tools
A focused workflow for designing, building, versioning, and deploying modern web applications.
- Git
- GitHub
- VS Code
- Vercel
- Render
- Figma
03 — Featured work
Projects built to turn ideas into useful experiences.
01 / Full-stack browser game
Waves Arcade
A full-stack browser game with user accounts, progression systems, leaderboards, admin tools, and secure backend validation.
Purpose
The project combines an arcade gameplay experience with a complete account system, progression mechanics, analytics, and practical administration tools.
Technical challenge
Designing secure server-side score validation and anti-cheat checkpoints while keeping gameplay responsive.
Core functionality
Authentication · Progression · Anti-cheat- Registration & authentication
- Guest mode
- Leaderboards
- In-app currency
- Skin shop
- Daily missions
- Achievements
- Admin dashboard
- User support
- Analytics
- Anti-cheat
- Multilingual support
- React
- TypeScript
- Node.js
- Express
- Prisma
- PostgreSQL
- Vercel
- Render
- Cloudflare Turnstile
- Resend
Gameplay
Real project02 / Gaming community · Interface
Undying Metro Shop
A modern gaming shop interface focused on premium UI/UX, a responsive layout, clear navigation, and fast performance.
Premium UI · Responsive · Fast- HTML5
- CSS3
- JavaScript
- Responsive Design
Real project03 / Web utility · Device intelligence
IP Information Website
An interactive web application that reveals browser, operating system, device, and IP-related information through a modern animated interface.
Browser data · Device insights · Motion- JavaScript
- Browser APIs
- HTML5
- CSS3
Real project04 / Team project · Travel experience
Yacht Adventures
A responsive yacht rental website created as a team project, with an editorial layout, clear content hierarchy, and polished visual presentation.
Team delivery · Editorial UI · Responsive- HTML5
- CSS3
- JavaScript
- Responsive Design
Real project05 / Team project · Education
Britlex
A responsive language-learning landing page created as a team project, with accessible structure, clear service sections, and consistent visual rhythm.
Team delivery · Content hierarchy · Responsive- HTML5
- CSS3
- Responsive Design
- GitHub
Real project04 — Certificates
One verified achievement, presented internationally.
Official certificate · English edition
Frontend Development Certificate
- Organization
- GoITeens Academy
- Completed
- December 2025
- Language
- English
Successfully completed the Frontend (HTML/CSS) course and built graduation projects including an informational website and an e-commerce website.
International English edition issued by GoITeens Academy.- HTML5
- CSS3
- Responsive Design
- Flexbox
- CSS Grid
- SCSS/SASS
- Git
- GitHub
- Figma
- Website Layout
Official certificate · Ukrainian original
Frontend Development Certificate
- Organization
- GoITeens Academy
- Completed
- December 2025
- Language
- Ukrainian
Successfully completed the Frontend (HTML/CSS) course and built graduation projects including an informational website and an e-commerce website.
Original Ukrainian edition with the same verified course details.- HTML5
- CSS3
- Responsive Design
- Flexbox
- CSS Grid
- SCSS/SASS
- Git
- GitHub
- Figma
- Website Layout
05 — GitHub
Code, progress, and continuous learning.
My GitHub is the working record behind these projects: frontend experiments, backend architecture, steady iteration, and practical problem-solving.
@SerhiiKharyponcukReactInterfaces
TypeScriptClean code
Node.jsBackends
06 — Contact
Have a real problem worth building for?
I’m open to frontend and full-stack JavaScript opportunities, collaborations, and projects where clean implementation matters.
kharyponchuksergej@gmail.com