Description: We need somebody to help us make custom modifications to an existing PHP ad server (PHPAdsNew). This includes changes to both the data model and the codebase. This is not a web development job - most of the work will be in changes to back-end object libraries and database tables. Requirements: * Strong PHP experience. * Ability to design and build systems to support high traffic volumes (1 million + requests per day). * Moderate SQL knowledge. * Ability to alter mySQL schemas. Plusses: * Knowledge of Ruby. * Knowledge of the PHPAdsNew ad server.