Hi,
I am CQ5 developer with 4 years experience. You have listed the skills as "PHP" and "Software Architecture", so my bid will probably be at the last of this project but CQ5 is all about Java, Sling, Jackrabbit/OAK, JCR, JSP, Javascript, JQuery, Ext.js.
I have worked extensively on both classic(old) UI and the touch(Coral/Granite based) UI with thorough knowledge of AEM DAM/ASSETS and AEM Sites, workflows, replication, observation listeners etc. It would be great if you can drop me a message with your requirements and the customization/development you need and we can take this discussion further.
Regards,
Anupam