I have been developing web applications for 5+ years.
My favorite technology & key skills:
1) PHP (Core PHP, Laravel, Yii, Codeigniter, CakePHP)
2) Ruby, Ruby on Rails( ROR )
3) Javascript, JQuery, Bootstrap
4) MySQL, PostgreSQL, MongoDB, DynamoDB, SQLite
5) Css, Css3, Html5
6) Native Mobile App (Android, iOS, Android Studio, Objective-C, Swift)
7) OCR, Image Processing(C/C++, Python)