ERP-Salesforce Integration Suite

I need my existing ShopLC back-office ERP to talk seamlessly with Salesforce so that Inventory Management, Order Processing, and Financial Accounting modules all run from a single, reliable source of truth... (Budget: ₹12500 - ₹37500 INR, Jobs: API Integration, ERP, ETL, Inventory Management, QlikView, Salesforce App Development, Salesforce.com, SAP)