Custom Built E-Commerce Website

I am in need of a custom-built e-commerce website that will be able to handle advanced features such as a customised checkout process and integration with third-party platforms. I prefer to use Shopify as the platform for my website. The ideal freelancer will have experience in developing e-commerce websites and be skilled in Shopify development. The budget for this project is yet to be determined. I am able to provide an existing domain for which I am aiming to emulate something to the same degree. Please contact me for further information and quotation.