System Administrator

CHARLES JEFFERSON

832-***-**** ~ *********@*****.*** ~ Houston, TX https://www.linkedin.com/in/charles-jefferson-aa41221b7/ System Administrator/ (TOP SECRET CLEARANCE/SCI)

System Administrator/ Operates and maintains all aspects of server administration to include but is not limited to Microsoft Active Directory, WINS, DNS, DHCP, print queues etc. Backup Exec to conduct file server Backup / Restores. Maintain Systems Availability and perform regular maintenance on equipment. Maintaining antivirus / security requirements by the US Army standards and regulations. Performs other duties as required. CORE COMPETENCIES

Installs and Configures Network Printers ~ Drives Customer Satisfaction Levels ~ Joins VM’s to Active Directory Domains ~ Windows Server 2019~ Windows Operating Systems (OS) Network Connections and Firewall ~ IT Policy and Procedure Development ~ Protects Confidential Information

CERTIFICATIONS:

MCSE Core Infrastructure ~ CASP ~ CompTIA Security+ ~ CompTIA Network+ ~ CompTIA A+ ~ VMware VCTA INFORMATION TECHNOLOGY EXPERTISE

Identifies Network Specifications and Information/Security Requirements by consulting with users and analyzing workflows.

Designs Router Administration, including interface configuration and routed protocols.

IT Software/Hardware/Network Planning, Selection, Installation, Configuration, Testing, and Maintenance.

Maximizes Network Performance. Conducts network monitoring, analysis, and performance tuning, evaluates networks for availability, utilization, throughput, and latency, troubleshoots/resolves complex issues, and partners with vendors.

Secures Critical Networks and develops network access, monitoring, controls, and evaluations.

Maintains Documentation for hardware and software solutions. PROFESSIONAL CAREER HISTORY: IT AND SYSTEM ADMINISTRATOR System Administrator T3 (05/2023-04/2025)

SAIC: Qatar Al Udied AB

Jacobs: Qatar Al Udied AB

Provide fully capable Special Operations Forces (SOF) to defend the United States and its interests and synchronize planning global operations against terrorist networks. Managed virtual servers, software solutions on (SOCOM) NIPR/SIPR military networks and infrastructures. Performed admin level support for the RSC-SWA in accordance with the SIE OPORD.

Patch Management/Scheduled ASI’s for monthly patching on the servers in the SOCOM AOR.

Server Builds and Decommissions/Commissioned new VM’s in vSphere and Nutanix. Added new servers to Active Directory. Deleted old servers that were outdated and out of compliance.

OS upgrades/Perform upgrades to the operating systems and layers software packages. (IE VDI components, Windows services or other enterprise apps).

Directory Service Support/Including DNS, ADFS, DFS, Domains and Trust, Sites and Services and Role Based Access Control

Troubleshooting/Preforming backups, troubleshooting and problem resolution for servers associated with a VMware virtual infrastructure.

Server Management/Maintain, upgrade, and implement improvements to the VMWare ESX I, iDrac and Nutanix infrastructure.

(AHV)/Configure and Manage Nutanix Acropolis Hypervisor

Server Maintenance/Troubleshoots issues from various datacenter notifications of the status of the clusters within our AOR.

Infrastructure System Administration T3 (11/2020 – 10/2022) CACI International: Djibouti, Africa

Delivered knowledgeable System Administrator support in a high-security setting while ensuring maximum uptime. Managed systems servers, software solutions on NIPR/SIPR Military networks, and infrastructures, performed backups/restorations, and installed new technical solutions.

Server management/Performed various troubleshooting and maintenance operations in Windows Server environments.

Active Directory/Create/modify AD Security Groups, user accounts, create and granted permissions to a New AD OU

MIMS/ Microsoft Identity Manager as a daily need to add customers and computer profiles to populate to Active Directory.

Service Now/ Used Service Now as a ticketing system as a way to close out the orders are have documentation on future needs for customers are other support in our network.

Server Roles/Installed server roles and features on multiple purpose per requirements of the military base on Microsoft Server 2016

Server Patching/Performed patching for file, print, and network policy servers.

VM/Monitor VM Stack Servers and Storage using VSphere 6.0

Troubleshooting/Provided Tier 2 and Tier 3 technical support for end user and on site troubleshooting.

Security/Configured Disa Security Technical Implementation Guides (STIG’s) on network printers and servers to ensure compliance.

Powershell/Daily usage of gpupdate: force, GET-ADUser: GET-ADComputer: ping: ping-t: NS-lookup: ipconfig: ipconfig Get- ADDomainController: Get-ADReplicationFailure Sync-ADObject: Get-ADGroup: dcdiag Desktop Support (SCCM)/HELP DESK ADMINISTRATOR (8/2015 – 2/2019) (3/2020-8/2020) VECTRUS: AFGHANISTAN

Delivered knowledgeable technical support in a high-security setting while ensuring maximum uptime. Managed system servers, hardware/software solutions on NIPR/SIPR/CENTRIXS Military networks, and infrastructures, performed backups/restorations, installed new technical solutions, and provided timely help desk support to end users. Assisted the military with installing taclanes.

Managed and Maintained End User/Created Employee Accounts, Rights, and Permissions.

Scheduled and Executed Planned Maintenance Operations and identified and initiated temporary/permanent fixes and repairs/Baseline computers on the NIPR/SIPR/CENTRIXS Network.

ACTIVE DIRECTORY/ Used Active Directory as a daily need to add customers and computer profiles in the correct console tree. Created MAB’s as a way to authenticate systems to the network

Computer Maintenance/ Changed out bad hard drives in laptops and desktops. Degaussed and wiped hard drives depending on the customer’s needs. Swapped out bad keyboards on laptops. Changed out bad video drivers, DVI, VGA, and HDMI cards. Added extra memory to computer devices as needed. Cleaned out computer systems that were dusty are clouded with dirt. Windows Outlook/ Helped customers out when needed on dealing with Outlook issues. Deleting old emails and creating Data Files for extra space. Helping customers to unlock Encrypted emails

Remedy/ Used Remedy as a ticketing system as a way to close out the orders are have documentation on future needs for customers are other support in our network.

Customer Support/ Help solve customer issues over the phone. Walked customers through step by step and remoted into their systems if needed. Directly helped customers who needed some extra help where they had to personally bring in their systems to be maintained.

Microsoft Office/ Helped users solve their issues with different Microsoft Office software. Assisted them in different errors they received that caused them issues dealing with their missions. EDUCATION AND TECHNICAL SKILLS

INFORMATION TECHNOLOGY

New Horizons Computer Learning Center

TECHNICAL SKILLS:

Patch management, Configuration Management, Backup and Recovery, Security Patch, Virtualization, Nutanix, VMware vSphere, Hypervisors, Cluster management, DNS Microsoft Office, Microsoft Virtual Server, Active Directory

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