Implemented, managed and supported:
Office 365 (Exchange, Lync, OneDrive, SharePoint).
Exchange environments specific versions interested in are Exchange 2010 and Exchange 2013
Lync environments specific versions interested in are Lync 2013
Exchange 2013 hybrid with Office 365
Lync 2013 hybrid with Office 365
Azure AD connect with multiple AD forests, AD Domains and Exchange organisations
Active Directory and knowledge of integration between multiple AD Forests
migrating mailboxes to Office 365
migrating Lync 2013 users to Office 365
AirWatch for iOS and Android devices
and...
ability to write claims rules for Office 365
Intermediate to advance knowledge of PowerShell and ability to write scripts and automate processes
Knowledge of SMTP and mail relaying and routing debugging. (Separate from Exchange)
Knowledge of Binary Tree Coexistence and managing Domino contact integration with Exchange and Office 365
IT Firm!