Hello?
How are you?
I have good experiences in "Need a developer to add a script on the order confirmation page of my Shopify Store" as you can see my profile for these (HTML, PHP, Shopify, Shopify Templates, Website Design).
I have been working for 7 yrs in this scope.
While we contract and work in our jobs, I will get paid once you have confirmed satisfied result.
If I do not deliver satisfied result, I will never get paid from you.
We can discuss more details to understand more easily if you have other infos.
Hope to work with you.
Thank you.