ERPNext Customization Expert Needed

I need an expert to customize five ERPNext modules for my company: Accounting, Inventory, Sales, Quality, Manufacturing, and CRM.

Key Requirements:
- Tailor the Accounting module with:
- Custom reports
- Invoice templates
- Tax calculations
- Modify the Inventory, Sales, Quality, and Manufacturing modules as per our specific business needs.

Ideal Skills and Experience:
- Proven experience with ERPNext customization
- Strong understanding of accounting, inventory management, and sales processes
- Ability to create custom reports and templates
- Knowledge of tax regulations and calculations
- Excellent problem-solving skills and attention to detail

Please provide examples of previous ERPNext projects and a timeline for completion.