Shopify E-commerce Site for Auto Parts

I'm looking for an experienced Shopify developer to create a unique e-commerce site for selling automobile parts. The design should be fresh and original, as I'm not looking to match any existing brand.

Essential Requirements:
- All functionalities typical of a Shopify e-commerce site
- User-friendly navigation
- Mobile-responsive design
- SEO optimization

Ideal Skills and Experience:
- Proven Shopify development experience
- Strong design skills for creating a new brand identity
- Knowledge of SEO best practices
- Ability to implement secure payment gateways and ensure site security

Please provide examples of previous work and estimated timelines.