Seasoned IT Systems Administrator with 24+ years of IT experience

Dennis T. Stroble

PO Box ***** Hayward, CA ***** 415-***-**** ********@*******.***

Professional Summary

Seasoned IT Systems Administrator with 24+ years of IT experience supporting enterprise environments, managing Windows servers, and deploying secure, scalable infrastructure solutions. Proven expertise in artificial intelligence, Office 365, Azure, VMware, SCCM, Intune, and PowerShell scripting. Adept at troubleshooting complex issues, implementing security protocols, and driving IT projects to completion. Strong communicator and team player with a commitment to continuous learning and customer service excellence

Core Competencies

Windows Server (2012–2025), Windows 11/10

Office 365, Artificial Intelligence, Azure AD, Intune, Hyper-V, VMware vSphere

SCCM, Veeam, ManageEngine, Citrix, BitLocker

Active Directory, Group Policy, DNS, DHCP

PowerShell Automation & Scripting

Endpoint Security (CrowdStrike, CarbonBlack, Bit Defender, Windows Defender)

Backup & Disaster Recovery

Understanding of workstation, desktop and laptop hardware including Lenovo, Dell, & HP

HIPAA Compliance & Regulated Systems

Technical Documentation & Training

Experienced

Quickly diagnosing & troubleshooting IT issues including using ChatGPT & Copilot

24 years of IT experience & 30 years of customer service experience

Enforcing policies and procedures

Training & serving as an escalation point

Developing documentation, step-by-step procedures & training guides

Keeping up to date with technical advances & industry standards

Implementing, driving, & completing projects

Working individually & as part of a team

Professional Experience

Amgen – Specialist IS Business Systems Analyst 9/22 to 9/25 (contract)

Troubleshot and maintained Windows lab computers and upgraded systems to Windows 11

Used ChatGPT & Copilot to quickly develop solutions for issues

Resolved complex instrument and system issues, ensuring data integrity and backups

Documented & troubleshot steps & resolutions; managed hardware inventory & procurement

Ensured systems were backed up; fully document troubleshooting steps & resolutions

Took inventory & ordered new components & supplies; participated in meetings & presentations

Alameda County Office of Education – Network Administrator 2/2022 to 7/2022

Migrated legacy servers to Server 2019 and deployed security patches

Administered vSphere & performed Veeam backups; performed Exchange Server maintenance & troubleshooting

Conducted security audits using ManageEngine Desktop Central

Beigene – IT Systems & Support 11/2021 to 2/2022 (contract)

Supported Windows 10 devices and resolved Office 365 and Azure AD issues

Administered Intune, SharePoint, Teams, and mobile device management

Troubleshot & fixed IT issues on site and for remote workers

UC Berkeley – Systems Administrator II 5/2021 to 10/2021

Managed AD accounts, group policies, and Citrix applications

Troubleshot & fixed Windows 10 issues

Supported Google Workspace and addressed Falcon Host alerts

Administered BitLocker and performed network registration on Juniper switches

Troubleshot Macintosh OS & software issues

SK Hynix – PC Support 11/2020 to 5/2021 (contract)

Provided onsite and remote technical support using Manage Engine and WebEx

Resolved OS, software, and hardware issues on laptops and desktops, improving user productivity

Imaged and deployed systems and upgraded Windows 10 devices to latest builds

Responded to cybersecurity threats and delivered remote support via Manage Engine Desktop Central

Visa - Systems Administrator 5/2019 to 10/2020 (contract)

Deployed patches to Windows Servers via SCCM, mitigating critical vulnerabilities

Maintained and troubleshot video surveillance security systems (Genetec, DVTel, & CCure)

Performed server/network security scans and resolved issues, enhancing overall system security

Performed enterprise collaboration through Office 365 Teams and SharePoint

Education

Bachelor of Science in Information Technology – National University, Sacramento, CA GPA: 3.6 Cum Laude

Associate of Applied Science in Networking Technology – Heald College, Sacramento, CA GPA: 4.0 Honors

Associate of Applied Science in Computer Technology – Heald College, Sacramento, CA GPA: 3.7 Honors

Certifications

Microsoft Certified Solutions Associate (MCSA): Server 2012, Server 2008, Windows 7

Microsoft Certified IT Professional (MCITP): Exchange, Virtualization, Lync

Microsoft Certified Systems Engineer (MCSE): Security

Microsoft Certified Technology Specialist (MCTS): SCCM, Exchange, AD, Virtualization

CompTIA: Network+, A+, Security+

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