ERPNext Customization Expert Needed

I'm seeking an experienced ERPNext developer to customize several modules to better fit my business needs.

Modules for customization:
- Sales:
- Custom reports
- Custom fields
- Inventory:
- Barcode scanning integration
- Accounting
- HR

Ideal Skills and Experience:
- Proven experience with ERPNext customization
- Strong understanding of Sales, Inventory, Accounting, and HR modules
- Ability to create custom reports and fields
- Experience with barcode scanning integration
- Strong problem-solving skills and attention to detail

Please provide examples of similar work done.