Hello,
Extension and Integration 3rd party APIs are my forte. I have just gone through the attached document, and based on your project requirement, I will certainly build restful API for you Magento 1.9 website.
Here I would apprise you that I have 7 years of experience in Magento (v1.9 & 2.0), PHP(v5.5 & 5.6), MySQL, HTML/HTML5, CSS/CSS3, Ajax, JQuery, Bootstrap v3, JavaScript etc. Developing Magento theme, are my forte.
I am readily available to commence this project. Please, do ping me to discuss further.
Regards,
Brijesh R, Magento Expert