PHP Web Developer required for ongoing collaboration

I'm looking for a web developer to work with me on an ongoing project for a client. They have a lot of work planned in the next few months which I cannot manage alone. The application is a bespoke e-commerce solution for an online visa service.

Initial work will be small enhancements, changes to the order management interface and bug fixing. This should enable you to get up to speed with the application. If this works out, there will be more involved tasks to collaborate or work solely on.

I need a developer with the following skills:
- PHP
- MySql
- jQuery
- HTML / CSS
- git
- Excellent written and spoken English

You will need to be happy with OO programming and MVC design patterns. Knowledge of the Symfony 2 or a willingness to learn it is a bonus.