I have used and developed with many frameworks/languages used for web based applications: * HTML5/CSS3, 10 years+ * JavaScript/jQuery, 5 years * Shell scripting and automation, 5 years * Linux development environment, 3 years * Apache, 3 years * REST/API/CRUD techniques, 2 years * Third-party API integration, 2 years * Ajax, 2 years * Single-Page Application (SPA) techniques, 2 years * Responsive design techniques, 2 years * PHP, 2 years * VirtualBox CLI to integrate with web apps, 2 years * pfSense 3rd party integration, 2 years * Unity3D with online multiplayer (RPC), 1 year * OAuth, 1 year * SCSS, 1 year * Bootstrap, 1 year * NodeJS, 1 year * Express.js, <1 year * BaaS and cloud scripting, <1 year * Ruby, <1 year * Nginx, <1 year