Shopify Developer for Front-End and API intregation

Hi, We are launching new shopify website and we need developer for take care our site.
Your role is taking care of

1. UX/UI Design / Mobile / Desktop Responsive
2. SEO Optimization
3. Design/Modify/Develop New Page
4. Theme Customization
5. Add more function/JAVA Intregation
6. Writing API to connect with CRM , WMS and other required platform

We are based in Thailand and your role need to work with us in Bangkok (GMT+7) time.
We will pay in hourly basis.

Thanks,
Plantoys