How are you?
I checked your attached files and I am very interested in your job.
I can upload your request file types and I masted merchant processor such as stripe, braintree, etc.
Also I have full experience in JavaScript, HTML, CSS, etc.
I can give you perfect result.
First of all, please open chat box and check my skills.
Then you can determined if I am fit or not for your job.
This is best solution, I think.
I will wait for your kind reply.
Thanks, From LS