If you want to create an e-shop, I can do your job easy, if what you need is stock management for your shop, that's another issue, but I can do it. I have been working for last 10 years on a similar project, ERP system for a retail chain of grocery shops here in Romania, creating and adapting the software, there were 10 shops who uses my software, all developed under Linux, with PostgreSQL as a database, different kind of reports requested by administration, different users. It also has modules for small production, human resources, CRM, stock, inventory, an all the stuff adjacent...So that makes me feel I am good for your job, and await for accepting me to work for you