Daily PHP developer required

ongoing and permanent website development and customisation required for gift catalogue site. site originally developed from dotproject script and has been highly customised. require experienced PHP mySql developer for 6 month contract (may extend). will begin with some small jobs in order to determine capability, efficiency and reliability before awarding contract. Important requirements: - Error free work - Ongoing availability (stable and reliable) Must be available for some hours everyday weekdays on IM for communication purposes. $ 300-500 pm