ERPNext Expert Programmer using PostGres Database

We are looking for experienced Frappe Framework / ERPNext developer, to build an ERP product based on ERPnext. It should have all feature in Frappe/ERPNext v14 , connection must retrieve data from Postgres Server database and integrate it as a virtual doctype, working on listviews, reports, forms and links. We would need changes to the ERPNext to integrate with more modules as needed. We need installation and configuration, users, and modules to work too.
Please don’t bid if you never worked with Erpnext. Please list your previous Erpnext work only.