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Principal Systems Administrator in Chantilly, VA at ManTech

Date Posted: 2/12/2018

Job Snapshot

Job Description


Clearance Level Needed:


Networks & Telecommunication Services

Principal Systems Administrator – MID

Become an integral part of a diverse team that leads the world in Mission, Cyber, and Intelligence Solutions. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

The SystemAdministrator is responsible for providing a full range of IT support servicesto customer activities including client/server environment services. You will demonstrate a strong understandingof Server and Client functions in Windows Server 2008r2/2012r2 and Windows 10environments to include Active Directory, DNS, GPO&s, PKI and Auditing. Extensive experience in Information Assurancein support of ICD-503 compliance as it relates to building client images fordeployment, and Tier 1-3 support. Administrationof Red Hat or equivalent Linux systems integration into Windows SecurityDomains using LDAP for centralized user accounts and security group access.

Primary responsibilities include, but notlimited to:

• Experience with RAID, SAN, NAS, highavailability, backup and disaster recovery

• Configuration, migration and O&M of server applicationssuch as WSUS, SharePoint, Lync

• Experience with system monitoring tools:SolarWinds, Nessus, Retina, Desktop Authority

• Perform maintenance, repair and upgrade ofhardware; interfacing with enterprise support

• Research and order hardware/software to meetcustomer requirements

• Experience in setup/configuration of networkdevices, both copper and fiber

• Perform administration functions of Linux toinclude network services

• Apply operating system updates, patches, andconfiguration changes to Linux systems

• Installation and configuring new hardware andsoftware on Linux systems

• Adding, removing, or updating user accountinformation, resetting passwords, etc. on Linux systems

• Installation and configuration of Apache WebServices (and SSL), Apache Tomcat, and MySQL

• Understanding of PHP, phpMyAdmin, shellscripting, Webmin utilities for web based management

• Responsible for security of the systems toinclude scans, patching, daily log review/maintenance and system health checksto satisfy continuous monitoring

• Responsible for documenting the configuration ofthe systems

• Provide superior customer service; possessstrong communication (verbal and written) and interpersonal skills in a dynamiccustomer centric environment.

Desired Experience:

• Red Hat Linux 6.0-7.0 Management andAdministration

• Satellite Server Management (patch server)

• VMWare and/or virtual server environmentadministration

• Understanding of PKI certification and applyingto webservers

• Understanding of Mediawiki, WordPress Blog onLinux


• Bachelor&s Degree and 7-10 years& experience, orhigh school diploma/GED and 8-10 years of relevant experience

• Security+ certification (active)

• Occasional travel

• Working knowledge of the security hardeningprocess for server and client operating systems as it relates to ICD-503security controls

• COMSEC experience

• Previous NRO experience is highly desired.

Security Requirements:

• US Citizenship; must possess an active TopSecret SCI security clearance to be considered and must obtain and maintain aCI Poly.

Job Requirements

Requires Bachelor's degree (in Computer Science or related field) or equivalent, and seven to nine years of related experience.