Back-end:
- Yii 2, Symfony 2-3 – высокий уровень
- Yii, Laravel, CodeIgniter – средний уровень
- ZF, ZF2 – слабый уровень
- Codecept, PHPUnit, REST, JsonRpc
Front-end:
- HTML
- CSS (LESS, SASS, SCSS)
- JavaScript (JQuery, Underscore, Backbone.js)
- Gulp, Grunt
SQL:
- MySQL
- Postgresql
- OracleDB
- SQLite