Microsoft Systems Administrator and Virtualization Expert

Mark Phelps

214-***-**** *******@*****.*** LinkedIn

Objective

Microsoft Systems Administrator with extensive experience in enterprise Windows Server architecture, Active Directory, and virtualization. Demonstrated hands-on expertise migrating workloads from VMware vSphere to Microsoft Hyper-V using Hyper-V Manager, failover clustering, and SCVMM. Proven ability to plan and execute virtualization migrations while ensuring stability, security, and performance of Windows-based infrastructure.

Core Competencies

•Windows & Microsoft Technologies: Active Directory, Group Policy, Windows Server, Exchange Server, PowerShell, WSUS, Failover Clustering

•Cloud & Virtualization: Office 365, Microsoft Azure, VMware vSphere, Microsoft Hyper-V

•Networking & Security: DHCP, DNS Certifications

•CISSP – Certified Information Systems Security Professional

•CompTIA Security+

•MCSE – Microsoft Certified Systems Engineer

•MCSA – Microsoft Certified System Administrator

Work Experience

Silver Bullet Networks

Independent Contractor

•Migrated on-premises Exchange to Azure-hosted Active Directory on Windows Server and O365, reducing hardware maintenance costs

•Configured G Suite for organizational email, replacing legacy services

•Chromebook deployment and wireless configuration campus-wide

•Provided client-facing network support and website SEO for small businesses

•Configured VPN, failover clustering, and Remote Desktop Connection, increasing Treasurer’s productivity by 33%

•Upgraded multiple client environments to Windows 10 and migrated virtual machines from VMware vSphere to Microsoft Hyper-V

Collin College

Adjunct Professor

•Instructed college-level courses: Cisco IT Essentials, Windows Server

•Delivered Continuing Education courses in Windows 10 and IT basics

US Renal Care

Sr. Systems Administrator

•Managed data backup application with deduplication to offsite locations, minimizing storage costs and avoiding data restoration costs

•Provided Exchange 2007 administration and AD modifications

Dell Corporation (Contract)

Sr. Systems Administrator

•Supported enterprise AD environments in client data centers

ANPI Zone

Sr. Systems Administrator

•Enhanced Exchange 2007/2010 availability and optimized AD structure

Optimal Blue

Sr. Systems Administrator

•Managed MS Exchange, Hyper-V Servers, Cisco VPN, and MS Active Directory

•Streamlined infrastructure with blade servers for web application development, reducing consumption and hardware costs

Education & Training

University of Wisconsin, Whitewater

B.S., Mathematics

Southern Methodist University

Networking Technologies Program

Collin College

Certified Information Systems Security Professional (CISSP)

CompTIA

Security+ Certified Professional

Key Accomplishments

Whitewater, WI

Dallas, TX

Plano, TX

Dallas, TX

•Hardened enterprise security by isolating Exchange services, adding a WatchGuard Firewall to prevent costly security breaches, and deploying WSUS for automated, controlled desktop updates.

•Resolved critical AD and NAS issues over a weekend, ensuring 100% business continuity beginning the workweek.

•Increased remote client productivity by delivering secure, scalable remote access to the e-mail server with RPC over HTTPS; this enhanced end-users productivity, allowing calendar and mailbox sharing with immediate technical support to these users

2014 - 2026

2021 - 2024

2013 - 2014

2012 - 2013

2011 - 2012

2008 - 2009

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