<p>SKILLS : PROGRAMMING LANGUAGES : JavaScript (ES6), C#, jQuery BACKEND DEVELOPMENT : Frameworks: ExpressJS , NestJS . Architecture: Monolith, Microservices . Runtime: NodeJS OS : Ubuntu, Windows TERMINAL : Ub untu Bash script, MongoDB script, Windows shell script. DEVOPS : Nginx, PM2, Cronjob, Redis, ReplicaSet / Sharding MongoDB cluster, ReactJS cluster mode , SocketIO Adapter, Docker basic , CI/CD , AWS Cloud ,VPS Vultr. TECHNOLOGIES : Google Apis, Firebase, VNPAY, Apple In-app Purchase, Google Inapp Purchase, Restful API, SocketIO, ExpressJS DATABASES : MongoDB , MySQL, PostgreSQL</p>