CSS work and debugging on Open Journal System (OJS)

We are looking for a freelancer to assist with the cosmetic redesign of an Open Journal Systems (OJS) installation. We would like a CSS redesign as well as other cosmetic adjustments and functionality added to the site. In addition we may need some assistance with debugging and adding extra functionality. Also we may need support for the system (mainly database administration) at an hourly rate as problems arise. We would prefer an expert/specialist in OJS, alternatively someone with CSS, PHP and MySQL skills.