full-stack development, Spring MVC, web-publishing, Google API, webpack, FFmpeg, rtmp, web design, PM, barcode, software-architecture, Scale-out, spring-boot, hapi.js, npm, MariaDB, hybrid-mobile-app, daum map api, Android SDK, Objective-C, Oauth2, webview, gd2, Node JS, live-streaming, framexpert, RESTful-api, Amazon API Gateway, nexacro, PostgreSQL, swagger, express.js, Slack, Git, Oracle, Amazon AWS, load-balancing, Javascript(ES6), hls, jQuery, PHP, MySQL, RethinkDB, Redis, Responsive web, asynchronous, Maven, Gradle, hapi.js, Gogs, Amazon ElastiCache, Amazon CloudFront, AWS Elastic Load Balancing (ELB), AWS Lambda, AWS CodeDeploy, Serverless, CSS3, HTTP, cdn, SVN, mybatis, Meterial Design, Apache Tomcat, spring-framework, android-gcm, Solr, NoSQL, frontend, backend, WebSocket, C++, Bootstrap, CSS, HTML5, web crawling, Web Service, Android NDK, nginx, Node.js, Android, photoshop, Linux, UI/UX , Java, JavaScript

Android Studio, WebStorm, IntelliJ IDEA, Eclipse, daum map api, JSON, sweetalert, handlebars, Firebase Cloud Messaging, Firebase, moment.js, Python, spring-framework, mybatis, Bootstrap, GitHub, Spring MVC, JSP, CSS3, Oracle, Git, Spring, HTML5, Node.js, Ajax, MySQL, jQuery, Android, JavaScript, Java