Sr. Systems Administrator

ManTech International   •  

Chantilly, VA

11 - 15 years

Posted 266 days ago

This job is no longer available.

Job Duties and Responsibilities  

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

Currently, ManTech is seeking a motivated, career and customer oriented Sr. Systems Administrator to join our team in Chantilly, VA to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech.  

The Sr. Systems Administrator will be responsible for providing a full range of IT support services to customer activities including client/server services and administration of enterprise network infrastructure. You will demonstrate a strong understanding of System/ Network administration functions in Windows Server 2012R2, Windows 7, and Linux environments including Active Directory, DNS, GPOs, hardening and auditing.

Responsibilities include, but are not limited to:

•Experience with virtualized environments (VMware vSphere 5.x) and knowledge of provisioning hardware, storage, resources and configuration/administration, including high-availability and failover services for cloud infrastructures.
•Provide limited support for IT asset management and property control processes in managing inventories of workstations, monitors, and other related IT infrastructure through the customers control systems
•Configuration and O&M of RHEL 6/7, Ubuntu operating systems, and Linux based applications.
•Deployment of 2-factor authentication solutions.
•Knowledge in setup and configuration of VTC, VoIP, and Polycom technologies.
•O&M of Windows applications such as WSUS, Exchange, SharePoint, SCCM, Google Earth, and Splunk.
•Experience with RAIDs, SANs, High Availability, Backups and Disaster Recovery.
•Experience in configuring network switches, working with VLANs, and knowledge of routing protocols.
•Knowledge in security hardening of operating systems in a standalone environment as well as through GPOs.
•Research and obtain quotes for hardware/software based on customer requirements.
•Provide superior customer service; possess strong communication (verbal and written) and interpersonal skills in a dynamic customer centric environment.

Security Requirement:  
Active/current TS/SCI with CI Polygraph is required.
Qualifications     Position Requirements:
•Bachelor’s Degree in related field or equivalent, and 10+ years of experience.
•DoD 8570 IAT Level II compliant (e.g. Security+ certification).
•Occasional travel may be required (up to 25%).
•Familiarity with security hardening process as it relates to ICD 503.
•Data backup knowledge is highly desired.
•Previous experience supporting the NRO is highly desired.
•VMware VCP, Microsoft MCP, and/or Cisco CCNS certifications desired.


Equivalent Experience/Education
Bachelor's Degree
Years of Experience   

10-12years w/Bachelors Degree
07-09years w/Masters Degree