Uni-Uni to Vigo/Sella Integration

I need Uni Uni’s shipping API wired seamlessly into both my Vigo and Sella Cloud environments. The goal is to have every new order that appears in either platform pushed automatically to Uni Uni for fulfillment, then returned with the carrier label and tracking number in real time... (Budget: $250 - $750 USD, Jobs: API Development, API Integration, Automation, AWS Lambda, JavaScript, MySQL, PHP, Software Architecture)