Integration for Epos Now to connect with Magento -- 2

Job ID: 33228268

Budget: $250 – $750 USD

The Epos Now till system https://www.eposnow.com/uk/ offers a detailed API /webhook
https://developer.eposnowhq.com/
I would like to connect and update my stock and orders on my Magento store to my epos now till system.

Can this be done using REST API/web hook?

Requirement
Write two scripts that can be run using cron on my server
1, The script will update stock levels from epos now to Magento.
2, The script will import orders on Magento into epos now as transaction/order.

Please note that due to a freelancer not being able to complete this project has been reposted.
Related categories: PHP JavaScript Magento Software Architecture MySQL