Last job responsibilities:Developing and support(fixing bugs) of the payment system's PHP side. Common tasks included: 1)Adding support for new payment methods(EntroPay, PayPal, etc); Developing new functionality like: live chat, URU checks, etc; 2)Improving security of the system: eliminating possible XSS, session-fixation and other types of web-vulnerabilities; 3)Developing internal back-office application for payment system's administators; My responsibilities were PHP and front-end side and developing was mainly about connecting logic from the DB with clients. And special DBA developers worked on writing logic concentrated in stored procedures. Technologies Used: PHP5, JavaScript, HTML/CSS, Linux(Fedora, Suse, Debian), XDebug, TFS(for Visual Studio), MSSQL(but little due to presence of special DBAs).========