Experience with database driven web site using php.
MySQL Database setup and optimization.
Security: custom configurations to enhance security, iptables linux based firewalls. Auditing PHP code for common security problems.
My specialty: Complex issues that require a good understanding of Linux systems 'at large'.
My experience: Running large e-commerce and intranet web sites on Solaris with Oracle and Linux using mysql/php. Maintaining the associated systems and security.