Custom Integrated ERP Suite Development

I need an advanced, fully integrated platform that merges ERP, CRM, HRM, and Accounting into a single, web-based solution aligned with Indian accounting standards (GST, TCS/TDS, e-invoicing, and statutory reports). ERP is the core of the build, and within that the most critical areas are inventory management, supply-chain management, and production planning.

The system must seamlessly support multiple branches and warehouses, allowing real-time stock visibility, inter-branch transfers, and consolidated as well as branch-wise financial statements. Production planning should handle bill-of-materials, work-order scheduling, and material requirements. Supply-chain tracking must cover purchase requisitions through to vendor payments, tying directly into the accounting module so ledgers update automatically.

Beyond the ERP core, I also need:
• CRM that takes a lead through quotation, sales order, and invoicing, feeding data straight into accounts receivable.
• HRM with attendance, payroll, compliance (PF, ESI), and employee self-service.
• Accounting that posts every transaction generated by ERP, CRM, and HRM, producing GST-ready returns, e-way bills, and audit-ready financials without duplicate entry.

Preference to Indian freelancer who have knowedge about Indian accounting rules.

Please mentioned the Sentence "I have read the attached document". while applying otherwise your proposal will be ignored.