Need a very available senior php coder for recurent jobs

Hi, I have a Webdesign and software programming business and i need a php coder to work on our clients site. You need to be a real senior coder, someone that can integrate new module, debug code, and create fast fix realy well done. Extensive knowledge of php and joomla with 5+years of experience You need to be able to find your way in new project fast and do what need to be done. you will start with something like 10 hours by week and it will increase to full times as soon as the jobs fill in. There's the way we work. Our team use a project manager to do the job,. I send the programmer all the instruction he need to do the work via the project management web site ticket tools. We are in communication via instant messengers and i answers all questions and provide any aditional material the coder need. most of the jobs are joomla modification to clients site, we work with open source module and have all the sources codes whitout any encryption. I need someone very carefull in his work that know how and that will take the times to write nice code, clean and with descriptive names, some very very professional codes. I need a coder who is very available, someone that can be on messenger 8 more hours / day when we have a rush and that can deal with tight timelines and who like to have chalenges and interesting work. So if you are a very profesionnal programmer and want to have a great job with great people in a business that respect and values the people, then this is the occasion :) Thanks for your times Yvon