Summary
Overview
Work History
Education
Skills
Certification
Clearance
Timeline
Generic

Michael Coleman

Stafford

Summary

Seasoned Cloud & Systems Engineer (SC-300) with over 10 years of expertise in architecting and managing enterprise-scale Microsoft environments. Skilled in integrating legacy Active Directory with Azure and Entra ID solutions, leading Exchange migrations, automating identity lifecycles through PowerShell, and implementing Zero Trust security frameworks. Focused on optimizing cloud infrastructure to enhance organizational agility and security.

Overview

9
9
years of professional experience
1
1
Certification

Work History

Active Directory & Identity Management

Leidos/ Zachary Piper
01.2020 - Current
  • Architected and managed enterprise-level Active Directory (AD) infrastructures, ensuring high availability and seamless directory synchronization across hybrid environments using Microsoft Entra Connect.
  • Audited and refined Group Policy Objects (GPOs) and implemented Principle of Least Privilege (PoLP) for administrative access and resource permissions, enhancing overall security posture.
  • Engineered automated workflows for user lifecycle management, reducing provisioning errors and streamlining onboarding processes across the organization.
  • Led complex migrations between on-premises Exchange and Exchange Online (Microsoft 365), managing mailbox moves, message routing, and hybrid coexistence with zero downtime.
  • Administered and maintained large-scale Exchange databases, distribution groups, and mail flow policies, ensuring 99.9% uptime for critical communication services.
  • Configured SPF, DKIM, and DMARC records and managed advanced threat protection (ATP) policies, strengthening mail security against phishing and malware risks.
  • Controlled storage limits for mailboxes and archives in compliance with company policies.
  • Analyzed message tracking logs to identify any potential issues with mail flow or delivery delays.
  • Configured and managed user mailboxes, distribution lists, shared folders, public folders and other related components.

System Administrator

SAIC/DRRS-MC
05.2018 - 01.2020
  • Monitored Windows servers on VMware, ensuring hardware integrity and resource availability, and reviewed system logs while confirming completion of scheduled jobs, including backups.
  • Utilized Veritas to manage server connections, including flushing connections, toggling server states, and reallocating server loads.
  • Monitored logs in Cognos web interface, Veritas, and Weblogic for errors and executed backups.
  • Managed applications in WebLogic console, overseeing start, stop, undeploy, and deploy processes.
  • Monitored and evaluated STIGS, executed SCAP scans, managed ADS loads for SIPR collection, and assessed ACAS reports.

Technical Field Representative

DMDC/TELOS
11.2017 - 04.2018
  • Executed Windows 10 software and hardware upgrades across multiple military facilities to ensure operational readiness.
  • Installed and configured computer hardware, telecommunications components, hardware, computer applications and cabling.
  • Installed and configured peripheral components, including LAN components, cabling, monitors, keyboards, printers, and disk drives on user premises, adhering to installation procedures to enhance system functionality.
  • Utilized Microsoft Access database to track, update, and report on equipment inventories at each user site visited.

System Administrator, VIP Premier Support

Hewlett-Packard/DXC Technologies
10.2016 - 11.2017
  • Promoted to VIP support and managed Mobikey, Apple iOS support, Good for Enterprise Application, and Thursby, Hosted Virtual Desktop, along with deployment devices.
  • Respond to and diagnose problems through discussions with users utilizing steps of recognition, research, isolation and resolution.
  • Monitored, operated, and maintained software, hardware, and networks for computing platform supporting all military installations under NMCI.
  • Managed Group Policy Objects (GPOs) within Active Directory to ensure appropriate access and security configurations.
  • Specify users and user access levels by utilizing Windows Active Directory and Windows File Server.
  • Used Active Directory to add users, computers and printers to the network. On a team responsible for account activations and deactivations.
  • Maintained network functions at Resource Operation Center and monitored call volume.
  • Configure, monitor, and maintain email application.

Education

Bachelor of Science - Computer Information Technology, Business Administration

Old Dominion University

Associates of Science - Business Administration, Computer Technology

Northern Virginia Community College

Skills

  • Microsoft Active Directory
  • AD administration
  • Email migration
  • Exchange Online
  • Microsoft 365
  • Microsoft 365 integration
  • Intune
  • PowerShell scripting
  • Windows Server 2012 R2
  • Windows Server 2008 R2
  • Azure cloud solutions
  • Disaster recovery
  • Mail flow administration

Certification

  • CompTIA Security+ Certification, SYD-401, 04/2022
  • Azure Fundamentals, AZ-900
  • Microsoft 365 Fundamentals, MS900
  • CLF-C01 :AWS Cloud Practitioner
  • SC-300- Identity & Access Admin, 03/2026
  • MCSE Windows Server 2016
  • MCSA Windows Server 2016
  • CASP+, CAS-003, 12/2021
  • Cloud +, CVO-003, 10/2024

Clearance

Active DoD Top Secret Clearance

Timeline

Active Directory & Identity Management

Leidos/ Zachary Piper
01.2020 - Current

System Administrator

SAIC/DRRS-MC
05.2018 - 01.2020

Technical Field Representative

DMDC/TELOS
11.2017 - 04.2018

System Administrator, VIP Premier Support

Hewlett-Packard/DXC Technologies
10.2016 - 11.2017

Bachelor of Science - Computer Information Technology, Business Administration

Old Dominion University

Associates of Science - Business Administration, Computer Technology

Northern Virginia Community College

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Michael Coleman