- Built full platform from scratch: landing page, client admin panel, super-admin dashboard, and analytics module
- Implemented QR/NFC-based product certification and blockchain (NFT) validation flow
- Developed multi-level analytics dashboard with drill-down by entity, filters, and CSV export
- Developed React Native mobile app for recording and verifying NFC tags
Stack: React.js, Next.js, React Native, Redux Toolkit, Context, Ant Design, SASS, Vite

- Built CRM for cold-calling teams from scratch, designed frontend architecture
- Implemented role-based access system (manager, admin, super-admin) with real-time settings sync via Socket.IO
- Developed analytics dashboard tracking calls, conversions, and revenue
- Built drag-and-drop document constructor for generating custom templates
Stack: React.js, Redux Toolkit, Socket.IO, Context, Material UI, SASS

- Extended enterprise project management system (Jira-like) with new features and bug fixes
- Implemented complex filtering, progress analytics, and real-time multi-user sync via Socket.IO
Stack: React.js, NestJS, MongoDB, Redux, Socket.IO, Context, Ant Design, SASS

- Built SPA from scratch with Web3 contract connections for NFT generation
Stack: React.js, SASS, Ethers.js, Remix IDE

- Built and extended Uniswap-based DEX for CRO token on Cronos network with Web3 wallet integration
Stack: React.js, SASS, Ethers.js, Remix IDE

- Debugged and added new modules with PostgreSQL integration
Stack: React.js, NestJS, PostgreSQL, Ant Design, SASS