Open To Work
DEMETRIUS VALENTINE
Reston
Summary
Dynamic Cloud Hosting Engineer with extensive experience at Leidos, adept in Azure and VMware technologies. Proven track record in automating infrastructure and enhancing system reliability. Skilled in VEEAM and Terraform, with a strong ability to communicate complex technical concepts effectively. Committed to optimizing operations and ensuring compliance across diverse environments.
Overview
11
11
years of professional experience
1
1
Certification
Work History
Senior IT Systems Administrator
Alta IT Services (Contractor)
Fairfax
08.2025 - Current
- Manages the school district's technology infrastructure, including networks, hardware, software, and data security, to support teaching and learning.
- Research, develop, and evaluate policies, procedures, and guidelines related to data integrity and security.
- Install, upgrade, and maintain campus technology systems.
- Provide input and assistance in the evaluation, deployment, and management of current and emerging future IT systems for ISA.
Cloud Hosting Engineer/Windows System Administrator/Cloud DevOps Administrator
Leidos
Reston
05.2021 - 08.2025
- Served as backup administrator, implementing immutable backups of shared files and directories and restoring virtual servers using VEEAM Enterprise Manager.
- Remediated vulnerabilities found on Windows and Linux machines while working in production, development, and Quality Assurance environments.
- Deploy, manage, automate, and optimize Azure infrastructure, including Azure Virtual Desktops (AVD), Microsoft Sentinel, and other services necessary for organizational operations and compliance.
- Collaborated with cross-functional teams to enhance incident resolution processes and conducted root cause analysis to mitigate future outages.
- An initiative-taking approach ensured minimal downtime and optimized system reliability across mission-critical platforms.
- Demonstrated practical experience with automation tools and techniques for streamlining administrative tasks and enhancing efficiency, such as Azure Bicep, ARM Templates, or Terraform.
- Deployed and managed virtual cloud infrastructures across hybrid environments in Microsoft Azure Cloud (IaaS & PaaS).
System Administrator/Network Administrator
Gibbs & Cox, Inc. a Leidos Company
Arlington
03.2020 - 05.2021
- Implemented, configured, and maintained Azure Cloud resources and services such as Azure subscriptions, Azure AD, Azure Information Protection (AIP), developed resource manager templates for virtual machines.
- Configured and implemented conditional access policies for remote users, enabling secure access to internal and shared resources while ensuring Azure Hybrid devices registered with Intune (Endpoint Manager) remained compliant with organization policies.
- Proactively monitored security events, responded to incidents, and mitigated vulnerabilities using advanced threat protection tools.
- Implemented security policies, procedures, and controls for CMMC compliance.
- Led the migration process of critical business systems and applications to Leidos business environment.
- Communicated complex technical information clearly and articulately for all levels and audiences.
Senior Systems Administrator/Network Administrator
Dewberry
Merrifield
06.2019 - 10.2019
- Led team and acted as primary contact for successful migration to Microsoft Office 365, ensuring seamless transition for users.
- Diagnosed and resolved system and application issues, collaborating with cross-functional teams to enhance system reliability.
- Managed networked systems (servers, SANs, VMWare, Windows servers, domain controllers, VLANs, Active Directory, WAN and LAN services) to ensure optimal performance and security.
- Created and managed servers to maintain Desired State Configuration management using SCCM, PowerShell, and other deployment tools.
Senior Microsoft Systems Administrator
Census Bureau
Greenbelt
01.2019 - 06.2019
- Directed shift operations and coordinated system administrators to resolve tier three enterprise support tickets efficiently.
- Remediated system and application issues in collaboration with other teams to ensure minimal downtime.
- Monitored health and capacity of system resources using SolarWinds to maintain optimal system performance.
- Supported a mixed environment of Windows and RHEL with experience troubleshooting RHEL.
Active Directory Engineer/Systems Engineer
Airbus, Inc.
Herndon
09.2018 - 01.2019
- Installed, configured, and maintained operating system workstations and servers, including web servers, in support of business processing requirements.
- Diagnosed system performance issues using performance tools and indicators, enhancing system reliability through proactive monitoring of queue lengths and CPU utilization.
- Managed user accounts for Windows systems, resolving login and printer issues to maintain operational continuity for end-users.
- Developed and enforced policies and standards for resource allocation, ensuring optimal use of computing resources across the organization.
AWS Systems Engineer
Health & Human Services
Rockville
01.2018 - 05.2018
- Configured, troubleshot, and maintained virtual server platforms, supporting Linux and Windows Server 2016, 2012R2 in AWS and Azure cloud environments to ensure optimal performance and reliability.
- Performed operating system patches and upgrades; applied vendor patches and software upgrades while using System Center Configuration Manager 2012 and Windows Server Update Services.
- Established cluster configurations and maintained high availability through shell scripting, performance tuning, and hardening in on-site and off-site environments.
- Created and manipulated PowerShell scripts via PowerShell ISE to automate server configuration, reporting, domain joining, and virtual switch creation, enhancing system management efficiency.
Systems Admin/Desktop Support
Department of Justice
Washington
10.2017 - 01.2018
- Installed, monitored, troubleshot, replaced, and supported virtual desktop infrastructure (VDI), end user equipment (terminals, printers, mobile devices, VTCs, scanners, VOIP phones, thin clients), local and wide area networks, data storage systems, and Active Directory.
- Administered and supported Active Directory, DNS & Microsoft Exchange replication.
- Performed operating system patches and upgrades; applied vendor patches and software upgrades while using System Center Configuration Manager 2012 and Windows Server Update Services while working in VMware vSphere 6.0 client and view administrator.
- Provided hardware and software support for all Apple & Microsoft devices, related MDM systems, configuration profiles, and software deployment systems.
- Created user accounts and deployed group policies to mobile devices using Airwatch, ensuring compliance with organizational standards.
Azure Service Engineer II, Contractor (Avanade)
Microsoft
Reston
07.2017 - 09.2017
- Experienced in configuring, deploying Microsoft Azure solutions (IaaS, PaaS, VMs, AD, Automation and monitoring virtual machines using Microsoft Azure Resource Manager.
- Created and modified PowerShell ISE scripts for security group creation, DSC configuration management, and server domain additions, enhancing overall system security.
- Diagnosed and debugged faults in complex services and systems, collaborating with Azure Engineering teams to resolve time-sensitive outages effectively.
- Troubleshot issues across hardware and application levels on Linux and SQL systems, ensuring stable and reliable service operation.
Desktop Support Technician
Intersections, Inc.
Chantilly
07.2017 - 07.2017
- Created and maintained user accounts, distribution/security groups, and passwords using Active Directory tools to streamline user management.
- Experienced with administering Active Directory, particularly with implementing/troubleshooting Group Policy Objects (GPOs) and Group Policy Preferences (GPPs).
- Configured file systems and operating systems using System Configuration Management (SCCM) to ensure optimal system performance.
- Executed administrative and technical tasks, including reviewing operating logs, system imaging, and user account creation, to maintain system integrity and support operational needs.
Endpoint Services Engineer I, Contractor (Akraya, Inc.)
VMware, Inc.
Reston
06.2016 - 06.2016
- Administered local server and network infrastructure, including file and print services, ensuring system reliability and performance.
- Experienced using System Center Configuration Manager Task Sequences to perform Operating System Deployments.
- Managed application containers to deploy updates and policies to mobile devices via Airwatch, enhancing device compliance and user experience.
- Troubleshot and resolved technical issues in person, by telephone, or using remote desktop tools, improving user satisfaction and minimizing downtime.
- Knowledge of server hardware, software installation and maintenance, in coordination with Corporate IT (e.g., SAN/NAS storage, Network).
Deployment/Migration Technician
United States Senate – Sergeant at Arms
Washington
11.2014 - 06.2015
- Imaged HP Elite Desk 800 G1 SFF workstations and established Active Directory profiles using Symantec Ghost Imaging Suite for streamlined user management.
- Installed and configured HP Color LaserJet Enterprise M750dn, setting up Lightweight Directory Access Protocol scanners and network services to enhance printing capabilities.
- Configured Blackberry Q10 and Z10 mobile devices via enterprise activation protocols to ensure secure and efficient mobile communication.
- Installed Windows 7 using Boot Camp software on MacBook Pro.
Education
Westwood College
Arlington, VA05-2015
Skills
- Amazon Web Services
- Azure
- Ansible Automation Platform
- Terraform
- Continuous Integration
- Windows Server 2022
- Windows Server 2019
- Windows Server 2016
- Windows Server 2012 R2
- RedHat Enterprise Linux 10
- RedHat Enterprise Linux 9
- RedHat Linux 8
- RedHat Linux 7
- VMware vCenter 800
- VMware vCenter 7020
- VEEAM Enterprise Manager
- Tenable Nessus
- Splunk
- Ansible
- Gitlab repository
- GitOps repository
- Mobile device management
- Endpoint configuration
- Endpoint Security Management
- Mobile Device Security
- Symantec Endpoint Protection
- Identity Management
- BitLocker encryption
- TFS Server 2017
- DropDMG
- Carbon Copy
- Office 365
Certification
- CompTIA A+ License, COMP001020731983, expired
- Air-watch Enterprise Mobility Associate, expired
- Red Hat Enterprise Linux Automation with Ansible (RH294), 9.0
Technology Competencies
Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, RedHat Enterprise Linux 10, RedHat Enterprise Linux 9, RedHat Linux 8, RedHat Linux 7, Blackberry Q10, Blackberry Z10, iPhone 5, iPhone 6s, iPhone 6 Plus, iPhone 10, Ansible Automation Platform, VEEAM Enterprise Manager, Tenable Nessus, Splunk, Terraform, Ansible, Azure, Gitlab repository, GitOps repository, Amazon Web Services, SonarQube 6.5, VMware vCenter 8.0.0, VMware vCenter 7.0.2.0, Microsoft Endpoint Configuration Manager, Intune Mobile Device Management, TFS Server 2017, RSA SecurID Two Factor Authentication, Airwatch (Mobile Device Management), McAfee E-Policy Orchestrator, Symantec Endpoint Protection, Trend Micro Office Scan Agent, Symantec Ghost Imaging Suite, Norton Anti-Virus, AVG Anti-Virus, MacAfee, Microsoft Bit Locker Encryption, File Vault Encryption, DropDMG, Carbon Copy, Office 365, Arista DCS-7010TX, Arista DCS-7050S, Opengear CM8100 Console Server, HPE ProLiant DL580 Gen10, HPE Synergy 480 Gen10, G1 SFF, HP Elite 800 G1 All – In – One PC, HP Pro-Book 450 G2, HP Color LaserJet Enterprise M750dn, HP Color LaserJet Enterprise M551dn, iMac, Mac Book Pro 13 and 15inch, Lenovo ThinkPad T460s, Dell Latitude E7470
Clearances
Public Trust, Currently Not Active
Work Preference
Job Search Status
Open to workWork Type
Full TimeLocation Preference
RemoteHybridOn-SiteSalary Range
$140000/yr - $183000/yrTimeline
Senior IT Systems Administrator
Alta IT Services (Contractor)
08.2025 - Current
Cloud Hosting Engineer/Windows System Administrator/Cloud DevOps Administrator
Leidos
05.2021 - 08.2025
System Administrator/Network Administrator
Gibbs & Cox, Inc. a Leidos Company
03.2020 - 05.2021
Senior Systems Administrator/Network Administrator
Dewberry
06.2019 - 10.2019
Senior Microsoft Systems Administrator
Census Bureau
01.2019 - 06.2019
Active Directory Engineer/Systems Engineer
Airbus, Inc.
09.2018 - 01.2019
AWS Systems Engineer
Health & Human Services
01.2018 - 05.2018
Systems Admin/Desktop Support
Department of Justice
10.2017 - 01.2018
Azure Service Engineer II, Contractor (Avanade)
Microsoft
07.2017 - 09.2017
Desktop Support Technician
Intersections, Inc.
07.2017 - 07.2017
Endpoint Services Engineer I, Contractor (Akraya, Inc.)
VMware, Inc.
06.2016 - 06.2016
Deployment/Migration Technician
United States Senate – Sergeant at Arms
11.2014 - 06.2015
Westwood College