FRONTEND

• React.js
• Next.js
• TypeScript
• JavaScript (ES6+)
• HTML5, CSS3
• Tailwind CSS
• SCSS
• Material UI (MUI)
• React Query (TanStack Query)
• Redux Toolkit
• Responsive Design
• Web Performance Optimization

BACKEND

• Node.js
• Express.js
• REST API Development
• JWT Authentication
• OAuth2
• Prisma ORM

DATABASE

• PostgreSQL
• MongoDB
• Redis

AUTH / SECURITY

• Authentication & Authorization
• JWT
• Cookies (HttpOnly, Secure)
• CORS
• CSRF Protection
• XSS Prevention

DEVOPS / DEPLOYMENT

• Docker
• CI/CD
• GitHub Actions
• Vercel
• AWS (EC2, S3 basics)
• Nginx

TOOLS

• Git
• GitHub
• Vite
• Webpack
• ESLint
• Prettier
• Postman