PHP MySQL - Developer Needed

We are a USA based company needing PHP programming done on a regular basis. The immediate task is to improve the functionality of a lodging site reservation system. This is just the first of many projects we need done. The job budget is a just a placeholder, and the final cost is subject to negotiation. Required - Experience in developing and deploying PHP applications from scratch - Familiar with MySQL, Javascript, and CSS - 6+ years programming in PHP - Familiar with AJAX - Familiar with PHP's native date/time functions and timezone support - Familiar with characters sets and displaying multiple languages - Knowledge of data security and encryption - Experience setting up and tweaking Linux/Unix server environments from the command line - Familiar with JQUERY - Familiar with JSON and XML - Experience on projects that utilized a remote API Please DO NOT APPLY FOR THIS UNLESS WE CAN CHECK YOUR WORK/EMPLOYMENT history for the last six years at least. Do not apply if you work for, or are associated with, a company. We want an individual who works for and by him/herself. The programmer will be maintaining and building new features for an existing application. This includes multiple public sites that collect reservations into a single database and a secured administrative back-end. Tasks may include: - Building custom tools that allow site administrators to digest and manipulate data - Assisting with generating and restoring backups - Building algorithms to process existing data in new ways - Adding support for new products and expanding the abilities of the current system - Providing technical support and ironing out bugs Essential! Please do not apply unless we can verify your employment/work history and background. Do not apply if you do not work for yourself. We do not want to deal with a company. Please use the word "elevate" in your response so I know you actually read through our requirements. Thank you.