CRM + Invoicing system

We are currently working in a team of 3 building an CRM application integrating Invoicing and accounting modules. We are looking for another experienced programmer that have at 5 years of experience in PHP and Zend Framework, familiar with MVC based application development. This is a contractor job for 2 month, option to extend if performance is beyond expectation!! Work from home full time contractor job. previous job portfolio is required. Thank you, PM if any questions please.