Hello I went through your project description and understand that you are looking for developers who can help fix and finish your existing website Graphica so that it works somewhat similar to Mixam , but can we please discuss your specific requirement in full-detail
I have done projects including ERP & CRM For Transport Business, Human Resources Management, Service Center Management, E-Commerce website, Social Networking website etc. I have good experience in implementing SSL, SEO, Online-Payment, Mobile Responsive designs, CMS, Blog, Multi-Language support etc.
I would really like you to allow me a chance to prove my skills to you, to do this I will be more than happy to create a demo website for you free of cost, this way you don't have to pay me anything and I get to prove my skills to you.
Regarding the project itself you don't have to pay me anything in advance I am open to getting paid in milestones, my offer also includes 3 months of free maintenance after the project is over.
As per freelancer policy I cannot initiate exchange of messages with you so please leave me a message so that I can provide you with a detailed proposal.
Once my work is done I will handover the source code to you. I will be making use of open-source technologies to keep the costing low