Recent 6 years, I was specialized in js ( javascript ) based frameworks such as Node.js, Express.js, Sails.js for backend and client-side SPA frameworks such as vuejs ( vue.js 1.0 , vue.js 2.x ) , angularjs ( angular.js 1.x , angular 2, angular 4 ), reactjs. During past 10 years, I developed several high level website & web app and customized website & web app and all of my client was definitely satisfied at my web development skill. And they call me Master Developer on website & web app development. Most of project were developed by MEAN stack ( MongoDB , express.js , angular.js , node.js ) , MEANS stack ( MongoDB , Express.js , angular.js , node.js , sails.js ), MERN stack ( MongoDB , express.js , react.js , node.js ) And I develop frontend with Vuejs ( Vue.js 1.x , Vue.js 2.0 ) , React.js, Ember.js. I also deployed these projects with several hosting providers and built pipelines. One of my other core skills are Server administration and Infrastructure building for services and My core skills on web development are MEAN stack Administration ( MongoDB , Express.js , Angular.js , Node.js ) , LAMP stack Administration, Docker, Jenkins, AWS EC2, EBS, S3, DynamoDB, SES, SNS, Lambda, API gateway, Cognito, etc..