Good Morning. I am UK Based, I am a technical consultant and I have been supporting Windows Server for 14 years +. I manage Windows Server estates every single day and I am well versed in all the features and configuration of the 2016 essentials. Hopefully you are aware that some of the essentials features are limited compared to the fully licenced Server 2016 standard/datacentre versions (eg. No Hyper V and No WSUS server). If you have ever uses Microsoft Small business server, then its important to note that they have changed the product a lot in Essentials 2016, and ripped out a lot of the features.
I guess from the tags of this project you have purchased integrations including Exchange, which other features have you purchased? Any Azure integrations? I am also an exchange consultant and can get that up and running for you.
Like I say, I support Windows Server almost every day. I am available as a remote worker in or out of UK business hours. I live in Birmingham UK.
I am available to chat and look forward to speaking to you.