I've spent the last 6 years specializing in javascript libraries learning how to use modern and classic design pattern in an architecture, how to capitalize on JS's strong parts and avoid the bad parts, how to use certain framework making sure they work correctly, how to optimize code to perform better. ? Server side: ? Wordpress ? NodeJS /Koa/Express/Mongoose ? Laravel, CodeIgniter, Wordpress ? Client side: ? Reactjs, React-native ? Javascript, jQuery, ? AngularJS, EmberJS, D3.js, ? Mobile development ? Native iOS, Android(Objective-C, Swift, Java, Kotlin) ? Hybrid(Ionic, React Native, PhoneGap) ? Firebase, Back4app, Urban, Amazon, S3, EC2, Twilio, Azure, Social Integration ? Databases: ? Redis, MySQL, PostgreSQL, MongoDB. ? Software Content Management: ? Git, Github, Trello. ? Miscellaneous APIs: ? Facebook, Twitter, Instagram, Google Map, PayPal checkouts(all kind)and a lot more.