Front-End

TypeScript, JavaScript (ES6+), React, Next.js, React Native (Expo), Ionic. React Hook Form, React Router, Redux Toolkit, Zustand (Persist), TanStack (Query,Table).HTML5, CSS3, Tailwind CSS, MUI, Shadcn, responsive UI development, RechartsForm validation (Zod, Yup), rich-text editors (React Quill), SSR/SPA architecture, i18nAuthentication via NextAuth, Google Cloud OauthIntegration with REST APIs and WebSockets (Socket.io, reconnect-websocket)Canvas-based graphics and image editing using Fabric.js (object manipulation, transformations, export, custom controls)

Back-End

Node.js, Express, NestJSPrisma ORM, (PostgreSQL, MongoDB), Mongoose, RedisSupabase (auth, storage, cron actions, triggers)Email and push notifications (SendGrid, Twilio, OneSignal, Brevo)Background jobs and scheduling (NestJS Cron, Supabase Edge Functions)API documentation and testing (Swagger / Postman)Database seeders and initial data setup

DevOps & Tools

Git / GitHub (branching strategy, PR review)Docker, GitHub ActionsAWS (EC2, Amplify, Route 53, S3): hosting front-end and back-end, domain management, DNS configuration, and file storage