Custom Script to Add Contacts in multiple Autoresponders from optin page

We need to build a custom standalone script: This basically will Add contacts in multiple Autoresponders using API.(list of AR listed below) using a single optin page hosted on clickfunnels or system.io or any other platform/autoresponder… (Budget: $30 – $250 USD, Jobs: API Development, Automation, HTML, JavaScript, PHP, Software Architecture, Software Development, Web Development)