Intermediate Systems Administrator

ManTech; Chantilly (VA); On-site; USD 75,000 - 110,000; Full time

Job summary

MANTECH seeks a motivated, mission-oriented Intermediate Systems Administrator for Chantilly, VA. You will provide Tier 2/3 IT support and manage VMware vSphere and Active Directory to ensure reliable operations.

Responsibilities include ABAC/RBAC-based access, Windows Server 2016/2019, DNS, GPOs, PKI, storage, backups, and documentation. Domestic travel up to 25% is required.

Qualifications

• Bachelor’s Degree with 2 years of relevant IT experience, or HS diploma/GED with 6 years experience.
• Experience in maintenance, repair, upgrade, and full lifecycle support of hardware/software interfacing with the enterprise.
• Security+ certification (active).
• Lead and collaborate with other IT teams; mentor junior admins.

Responsibilities

• Manage Windows Folders and Files using ABAC.
• Design, implement, and maintain VMware vSphere environments (vCenter, ESXi, VMs).
• Troubleshoot and resolve VMware performance and connectivity issues.
• Administer and troubleshoot AD and Group Policy; manage DNS and DCs.
• Monitor system/server configuration and health; document architecture.
• User and group management, security, and distribution groups in AD.
• Travel up to 25% domestically.

Skills

VMware vSphere

Active Directory

Windows Server

ABAC RBAC

Troubleshooting

Documentation

Mentoring

Domestic travel

Education

Bachelor’s Degree

High school diploma / GED with 6 years relevant experience

Tools

PowerShell

Microsoft Exchange

Linux

Job description

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

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. You will demonstrate 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, to include Active Directory, Domain Controllers, DNS, GPOs, PKI, DHCP, VMware ver. 8, Backup Architectures, Storage Management, and Auditing.

Responsibilities

• Managing 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%.

Minimum Qualifications

• 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.
• Provide leadership and mentoring to junior administrators and technical support.
• Security+ certification (active).
• Collaborate with other IT teams to manage system integration, configuration, and upgrades.
• Experience with client system security to include scans, patching, audit log review, and system health checks.

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.