Integration Expert required for long term role

I have an online SaaS app that is used by kitchen manufacturing companies. It has a PHP frontend and SQL backend, hosted in Azure. We currently integrate with MYOB, Xero, and Salesforce. I need someone to fine tune these integrations and to help with future API work, This will be on-going work and I am looking for someone who will be available long term. You must have good English and be available for at least 4 hours during my work day, NZT. I want to start in the next couple of days.