Open to opportunities

Matthew Sallee

@matthewsallee

Message

I modernize enterprise infrastructure, endpoints, security, and cloud collaboration systems.

United States

Message

What I'm looking for

I'm looking to modernize enterprise infrastructure, endpoint management, cloud collaboration, security, and VoIP systems while improving reliability and end-user support.

At Sunnen Products Company, I built and managed an SCCM environment, led its migration to Microsoft Intune, and administered Microsoft 365 services including Entra ID, Exchange Online, SharePoint, OneDrive, Teams, and Defender.

I've led large-scale infrastructure migrations, including SharePoint 2010 to SharePoint Online and 8x8 VoIP to Microsoft Teams Calling. I also upgraded an enterprise phone system to cloud-based VoIP for 500+ users and supported international users and a new manufacturing plant in Mexico.

Across Paulo, The Phoenix Group, BJC Healthcare, RGA, IT Services, and the United States Army, I've supported enterprise hardware, networks, VoIP, Active Directory, endpoint deployments, and end users in manufacturing, healthcare, consulting, and government environments.

I focus on improving security posture, modernizing legacy systems, automating administration with PowerShell, and maintaining reliable documentation and operational procedures.

Experience

Work history, roles, and key accomplishments

Senior Systems Administrator

Sunnen Products Company

Aug 2019 - Dec 2025 (6 years 4 months)

Designed, built, and managed SCCM environment for enterprise-wide deployments and automation. Led migration to Microsoft Intune and administered Microsoft 365, VMware, and endpoint security solutions.

SCCM Microsoft Intune Microsoft 365 Entra ID Exchange Online SharePoint Online Teams VMWare PowerShell Cylance Arctic Wolf SpecOps VoIP 8x8 Migration Endpoint Security Incident Response Documentation

System Administrator

Paulo

Apr 2018 - Aug 2019 (1 year 4 months)

Maintained enterprise hardware and software environments, administered SCCM for deployment and patching, and supported mobile devices and MDM solutions. Managed VoIP systems and led cybersecurity awareness initiatives.

SCCM MDM VoIP SharePoint Cybersecurity IT Procurement Networking Hardware Maintenance

IT Specialist II

The Phoenix Group

Oct 2016 - Mar 2018 (1 year 5 months)

Provided Tier II technical support for escalated hardware and software issues. Managed Active Directory user accounts and supported VoIP systems and enterprise Microsoft Office environments.

Active Directory VoIP Microsoft Office Hardware Support Documentation Preventive Maintenance

Desktop Support Specialist

BJC Healthcare

May 2016 - Oct 2016 (5 months)

Provided enterprise desktop support in a large healthcare environment, resolving hardware, software, and user issues while collaborating with multiple IT support teams.

Desktop Support hardware troubleshooting Collaboration

Desktop Support Specialist

RGA

Jun 2015 - May 2016 (11 months)

Delivered desktop and VoIP support, leading large-scale IP phone deployments, user training, and assisting with Cisco Call Manager upgrades.

Desktop Support VoIP IP phones User Training

Technician

IT Services

Oct 2014 - Jun 2015 (8 months)

Supported enterprise systems and led a company-wide BitLocker encryption migration while providing VoIP and end-user technical support.

Bitlocker Encryption VoIP end user support

Network Support Specialist

United States Army

Sep 2012 - Jun 2014 (1 year 9 months)

Maintained and secured battalion-level network and communication systems, providing help desk support and managing enterprise hardware and wireless infrastructure.

Network maintenance Security Help Desk Wireless Infrastructure