Intermediate Systems Administrator

MANTECH seeks a motivated, mission-oriented Intermediate Systems Administrator to join our team in Chantilly, VA.

About the role

As the Systems Administrator, you will be responsible for providing a full range of Tier 2/3 IT support services and expertise to customer activities. You will play a key role in the management, optimization, and troubleshooting of our VMware virtualized environment and Active Directory infrastructure, ensuring seamless and reliable operations for the organization.

Responsibilities

• Manage Windows Folders and Files using Attribute-based Access Control (ABAC).
• Design, implement, and maintain VMware vSphere environments, including vCenter, ESXi hosts, and virtual machines.
• Troubleshoot and resolve VMware-related issues, including performance bottlenecks, connectivity problems, and resource allocation.
• Manage, monitor, and troubleshoot Active Directory (AD) and Group Policy infrastructure.
• Monitor and maintain system/server configuration.
• Administer and support user and group management, including security and distribution groups within Active Directory.
• Create and maintain comprehensive documentation for systems architecture, processes, and configurations.
• Domestic travel up to 25%.
• Provide leadership and mentoring to junior administrators and technical support.
• Collaborate with other IT teams to manage system integration, configuration, and upgrades.
• Perform client system security tasks including scans, patching, audit log review, and system health checks.

Requirements

• Bachelor's Degree and 2+ years of relevant experience, or high school diploma/GED and 6+ years of relevant experience.
• Experience in performing maintenance, repair, upgrade, and full life cycle support of hardware/software interfacing with the enterprise.
• Experience implementing and managing Windows File Shares using ABAC with an understanding of file permission inheritance.
• Security+ certification (active).
• Demonstrated knowledge and understanding of client and server operations, including:
  • Windows Share and Folder permissions using Attribute Access Control (ABAC) and Role Based Access Control (RBAC).
  • Maintenance with Windows 10 and 11 environments and Windows Server 2016/2019, including Active Directory, Domain Controllers, DNS, GPOs, PKI, DHCP.
  • VMware ver. 8, Backup Architectures, Storage Management, and Auditing.

Preferred Qualifications

• Previous NRO and NRO/COMM experience is highly desired.
• COMSEC experience desired.
• Ability to use MS Office and PC.
• Ability to identify and implement new technologies.
• Familiarity with PowerShell.
• Experience with Microsoft Exchange.
• Experience with Linux.

Clearance Requirements

Must possess a current/active TS/SCI with Polygraph.

Physical Requirements

• Must be able to be in a stationary position more than 50% of the time.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.