Hello
YES, I can integrate your web system by paypal, zapier and 3rd-party SaaS System.
I can be an ideal candidate for this project as I have developed 500+ websites.
I am a full-stack developer and have 10+ years of experience in website & web application development using back-end Laravel, CI, Zend, Yii, Yii2 Symphony,CakePHP, framework, and Front-end Vue.js, React.js, Angular.js, HTML5, CSS3, Database: MySQL & MongoDB.
Please initiate a chat for further discussion.
Thanks & Regards
Vivek