Set up Zimbra high availability using Pacemaker, CoroSync and cloud API

I am looking for a freelancer to assist with the implementation and migration process of Zimbra 8.x, while also ensuring high availability using Pacemaker, CoroSync and cloud API. The ideal candidate should have experience with Zimbra 8.x and be familiar with the migration process. Additionally, knowledge of Zimbra's built-in high availability feature is required to ensure the project's success.