Programming languages

PHP 
I have eight years of PHP development experience with large object oriented non-trivial programs, of which most with PHP 5. I have used Zend Framework and some custom frameworks.

JavaScript
I also have eight years JavaScript development experience including NodeJS, AngularJS, jQuery and MooTools and several third party libraries supplying custom features, such as date pickers, Ajax libraries, UI form elements and overlay windows.

SQL
SQL is something I've used for about eleven years, of which eight years are work experience. I've mainly used Oracle, MySQL/MariaDB and PostgreSQL. Although I strive to use mostly standard SQL sometimes proprietary extensions have advantages in development speed, maintainability or performance.

Scala
I have created some small programs and studied some books about this very well-rounded hybrid language.

Java
I have completed several courses for Java, studied a few books and written small programs with it.

Python
I learned a bit of Python while creating a shoot'em up game with the pygame library.

C/C++
At the lower level of language scale, I've completed a few courses for both C and C++, studied several books about them and written simple programs using Linux C API, Win32 API and TCP sockets.