Cyber Defense / Systems Administrator - Military Veterans Wanted

ManTech (


  full-time   employee   contract

United States

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’ll 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 Cyber Defense / Systems Administrator- Linux Specialist to join our team in the Reston, VA area to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech.

Responsibilities include, but are not limited to:

Ability to install, troubleshoot, diagnose and repair Linux operating system installs. Should include Redhat flavors (primarily CENTOS) and some Debian (ex. Ubuntu). This will include resolving Nessus identified compliance and vulnerability issues (typically configuration changes and software updates).

Ability and understanding of general Linux OS O&M. This includes: patching (Yum/Apt); Kernel updates; drive space and inode management; integration with LDAP, Active Directory or similar; performing systems backups and restoration; integration with centralized logging (remote syslog).

Ability to install, troubleshoot, diagnose and repair Linux services and applications. This should include running things as services with its own user account (non-root), an understanding of automated process running and chrooting services.
Users should be familiar with at least SSH, SFTP, FTP.

Ability to automate most O&M tasks including automate patching, automate software installs, automate log management , scripting in bash and python, use of cron and other automation tools.

Candidate should be comfortable enough with Linux that they can provide O&M services in 5%-15% of their time with the rest focused on support to the innovation team.

Position Requirements:
Bachelors Degree in MIS, Computer Science or related field or equivalent technical/vocational certification or experience
Candidate’s core competence shall be in Systems Engineering/Administration
Candidate’s secondary competence shall be in Network Engineering/Administration
Five or more years of systems design, engineering, and administrative experience
Demonstrated knowledge and hands-on experience in stabilizing and standardizing Linux systems and infrastructures.