johnjheisler.com
John Heisler
IT Systems Administrator  //  @snowstuff123
South Jersey

I'm a Communication and Collaboration Administrator with nearly 10 years in IT. I manage ~2,000 users across 2 separate hybrid Microsoft 365 tenants.
My day-to-day work includes:
- Managing identities, groups, and access in Azure Entra ID and On-Premises Active Directory
- Administering Exchange Online and Exchange Server On-Premises across both tenants
- Administering SharePoint and Teams across both tenants
- Writing PowerShell scripts for bulk changes, repetitive tasks, and data gathering
- Tracking down the cause of mail flow, calling, and permission problems.
- Maintaining ~500 Windows servers, Hyper-V virtual hosts, and virtual machines.
Migrations are some of my most involved work. I've completed more than 8 email and tenant migrations to Microsoft 365. Each one requires knowing what exists, moving it in the right order, and making sure everything works after.
If you're planning a move to Microsoft 365, running a hybrid environment, or managing more than one tenant, I'd be glad to compare notes. Send me a message.

IT consultation services for individuals and small to mid-size businesses.
IT Systems Administration concepts, ideas, scripts, and more.
Videos on marketing, business, productivity, and whatever else catches my interest.
PowerShell scripts and open source projects.
Contact
Comments, Questions, or just want to say Hi?
hello@johnjheisler.com