Senior Security & Systems Administrator

Conducted security assessments of Active Directory, firewalls, workstations, and endpoint tools across a 75+ user environment. Remediated critical vulnerabilities, implemented anti-virus software, hardware encryption, and MFA, served as Okta Administrator, managed Windows Active Directory and Google Workspace with Okta SSO, responded to incidents, conducted vulnerability scans using Tenable, participated in SOX compliance audits, and administered Windows Server 2019 infrastructure and MobileIron MDM.

Operate independent IT consulting practice with TOP PRO status, 195 five-star reviews, and 400+ clients served. Deliver scammer awareness classes for seniors, provide Windows training, and perform computer repair, virus and malware removal, and endpoint security hardening for home and small business clients.

Managed end-user support via ServiceNow across four client sites during active VDI migration. Deployed and configured virtual desktops using Citrix XenDesktop and VMware Horizon, and resolved hardware and software issues for laptops, desktops, and VDI endpoints.

Maintained M365 tenants, Azure AD, and on-premises Active Directory. Used Intune for endpoint management, deployed Microsoft Defender for Endpoint, managed SonicWALL firewalls and VPN tunnels, and implemented Ubiquiti UniFi networks.

Led security patching, driver updates, and Windows 10 OS upgrades across 5,000+ laptops. Collaborated with the Windows 10 Build Team to validate patches and produced deployment documentation for enterprise rollout.

Administered Active Directory and SCCM for patching, inventory management, and remote-control capabilities across a multi-site enterprise environment. Led VOIP migration from Skype for Business to Microsoft Teams for 200+ users and created master images to standardize device deployment.

Systems Administrator role listed without dates in the source text.

Provided IT support services in a healthcare environment.

Served as Systems Administrator supporting enterprise IT operations.