Sergei P.

🚀 100% Job Success ⬆️ Top Rated Plus Developer ⏰ 4,923 Total Hours 💰 200k+Total Earnings ❤️Long Term Relationship Full-Stack Developer with 10+ years of experience in complex web apps, PWAs, and 3D projects. I help make web products faster, more stable, and easier to maintain. **What I do ⚙️** * Improve UI performance, load times, and rendering * Build and support maintainable frontend + backend architecture * Develop stable SPA and PWA apps across devices * Work on complex interfaces: editors, dashboards, interactive 2D/3D * Focus on usability and long-term technical health **Core expertise ** * Frontend: React, TypeScript, SPA, PWA, **MUI**, **responsive / adaptive layouts**, **animation** * Performance optimization and UX-focused interfaces * Backend: Node.js (Express, NestJS), PHP (Laravel), Python, **REST APIs**, **microservices**, database design * 3D in the browser: three.js, Babylon.js * Desktop apps: Electron * Infrastructure: Docker, Linux, Git * ML integrations **Recent work 🧩** * Food delivery systems with product constructors and custom business logic * ML-based web app for photo background removal * 3D web editor: performance and UI improvements * Desktop app automating time-sensitive API workflows * Interactive 3D web projects: maps, configurators, virtual exhibitions **Why clients work with me 🤝** * Handle both frontend and backend, reducing coordination overhead * Comfortable with existing codebases and real constraints * Focus on stability, clarity, and long-term collaboration Let’s build something outstanding together!