Shopify Currency Display Fix & Global Support

I'm running an Australian Shopify store that has recently gone global. I am facing a critical issue: international customers are seeing incorrect currency displayed while trying to shop on my site. This is causing potential loss of sales and creating confusion among my customers.

I need my Shopify store to support the following currencies:

- USD
- EUR
- AUD
- GBP
- CAD
- JPY

Moreover, I would like to implement an automatic currency detection system based on customer location. This will provide a seamless shopping experience for my international clientele and help convert visits into sales.

Ideal candidates should have:

- Extensive experience with Shopify platform
- Proficiency in resolving currency related issues
- Knowledge in setting up automatic currency detection systems
- Ability to ensure a smooth and user-friendly checkout process.