Systems Administrator

Peraton•Herndon, VA

13d

About The Position

Peraton is seeking a Systems Administrator with an active TS/SCI clearance to support mission-critical operations. The role manages, maintains, and enhances secure Windows-based environments, ensuring uptime and performance for essential applications. The administrator works with the Information Assurance team on continuous monitoring, cybersecurity compliance, and remediation of vulnerabilities identified through Nessus scans. Responsibilities also include configuring and maintaining Windows servers and desktops, implementing security mitigations, meeting government standards, leading assigned Classified IT Services (CITS) projects, and working with CITS leadership to identify technologies for new Peraton program contracts. The position interacts with users, evaluates vendor products, recommends hardware and software purchases, coordinates installations, and provides backup recovery. It also develops and monitors policies and standards for allocating computing resources. The administrator documents system configurations and vulnerability remediation, supports audits, collaborates with cybersecurity, network, and application teams, and recommends system improvements.

Requirements

Active TS/SCI clearance; ability to obtain a polygraph.
Bachelor’s degree and 8 years of relevant experience, including 3–5+ years managing virtualized Windows environments in classified, secure environments; an additional 4 years of experience may substitute for a degree.
Understanding of system security requirements in DoD or Intelligence domains, such as STIGs and RMF.
Customer service skills.
Ability to work in a fast-paced, high-security environment.
Strong troubleshooting and problem-solving abilities.
Effective communication skills and ability to document technical processes clearly.

Nice To Haves

Polygraph preferred.
Experience with virtualization technologies such as VMware, Hyper-V, or OpenShift.
Experience with Exchange, SharePoint, and MECM.

Responsibilities

Perform continuous system monitoring using vulnerability scanning tools such as Tenable Nessus.
Identify and analyze vulnerabilities from weekly and monthly scans.
Mitigate vulnerabilities by reconfiguring Linux servers and desktops or applying patches, security updates, and configuration changes.
Track, document, and report vulnerability remediation to support compliance with RMF or Intelligence Community standards.
Deploy, configure, maintain, and secure Windows servers and desktops.
Maintain the VMware virtualization platform.
Manage Active Directory services, folder and file permissions, and Group Policy management and compliance.
Harden systems using STIGs or custom configurations.
Monitor systems for performance, security, and availability, and proactively resolve issues.
Maintain system backup and disaster recovery procedures.
Collaborate with cross-functional teams on system integration and deployment.
Lead assigned CITS projects and work with CITS leadership to identify technologies for new Peraton program contracts.
Interact with users, evaluate vendor products, recommend hardware and software purchases, coordinate installation, and provide backup recovery.
Develop and monitor policies and standards for allocating computing resources.
Maintain detailed system configuration documentation.
Document vulnerability findings, mitigations, and resolutions in tickets or compliance reports.
Support security audits by providing technical information and collaborating with Information Assurance teams.
Work with Information Assurance and Cybersecurity teams to ensure systems meet security requirements.
Collaborate with network administrators and application teams to integrate Linux environments supporting enterprise solutions.
Stay current with technological advancements and recommend improvements.