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jonathan griffith

@jonathangriffith

Senior security & systems administrator with 16+ years securing infrastructure, reducing vulnerabilities, and improving uptime.

United States

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What I'm looking for

I’m looking for a role where I can secure and modernize enterprise IT—strengthening AD/Azure, endpoint protection, MFA, and compliance—while partnering with teams to reduce vulnerabilities, improve uptime, and deliver practical support.

I’m a results-driven Senior Security & Systems Administrator with 16+ years delivering enterprise-grade IT infrastructure, cybersecurity solutions, and end-user support across healthcare, manufacturing, and managed services. I specialize in Active Directory, Azure/M365, VMware, endpoint security, and compliance frameworks like SOX—consistently reducing vulnerabilities and strengthening security posture through modernization initiatives.

Across my roles, I’ve led network and endpoint protection efforts (including MFA, encryption, and incident response), managed cloud and identity environments (Azure AD/M365, Google Workspace, and Okta SSO), and supported day-to-day operations with strong SLA focus using tools like ServiceNow. I also operate Jon's IT Services, providing independent IT consulting, training, and repair for home users and small businesses—bringing practical, jargon-free guidance that improves security and everyday productivity.

Experience

Work history, roles, and key accomplishments

Current

Independent IT Consultant

Current

Jon's IT Services

Mar 2023 - Present (3 years 1 month)

Operate an independent IT consulting and repair service serving 400+ clients, with TOP PRO status and 195 five-star reviews. Deliver senior-focused scam awareness classes (minimum class size of 10) and perform PC repair, malware removal, and endpoint security hardening.

Endpoint Security Scammer Phishing Education Incident Response File Management

Information Technology Supervisor

Origin Materials / Nelson Connects

Sep 2024 - Apr 2025 (7 months)

Assessed Active Directory, firewalls, workstations, and endpoint tools to identify and mitigate enterprise vulnerabilities. Implemented anti-virus, hardware encryption, and MFA, managed Windows AD and Google Workspace with Okta SSO, and supported SOX compliance while responding to incidents and running vulnerability scans with Tenable.

Active Directory Okta SSO Google Workspace Administration Tenable SOX Compliance

Senior Field Technician

Averro / Primed

Oct 2023 - Mar 2024 (5 months)

Managed end-user support via ServiceNow across multiple client sites while maintaining SLA compliance. Deployed and configured Citrix XenDesktop and VMware Horizon virtual desktops and supported complex hardware/software troubleshooting during VDI migrations.

ServiceNow SLA Management Citrix VMWare Horizon VDI Desktop Support

Systems Administrator

Smile Business Products Inc.

Aug 2022 - Aug 2023 (1 year)

Administered Microsoft 365 tenants, Azure AD, and on-premises Active Directory, using Intune for endpoint management and Microsoft Defender for Endpoint for device protection. Configured and managed 50 SonicWALL firewalls for site-to-site VPN tunnels and deployed Ubiquiti UniFi networks to improve wireless connectivity for internal and external users.

Microsoft 365 Administration Azure AD Microsoft Intune Microsoft Defender Site To Site VPNs Active Directory Administration Ubiquiti Unifi

Systems Administrator

Intel (via ACS Solutions)

May 2021 - Aug 2021 (3 months)

Led security patching, driver updates, and Windows 10 OS upgrades across 5,000+ laptops to reduce vulnerabilities and improve performance. Validated patches with the Windows 10 Build Team and produced deployment work instruction and documentation.

OS Image Deployment Validation

Systems Administrator

Micron Technology (via Randstadt Staffing)

Mar 2020 - Sep 2020 (6 months)

Administered Active Directory and SCCM to support patching, inventory management, and remote-control capabilities across the enterprise. Led a VOIP migration from Skype for Business to Microsoft Teams and created master images to standardize and accelerate device deployment.

Active Directory Administration Patch Management Skype For Business Master Image Creation Remote Endpoint Control