Senior Linux System Administrator
Posted on: September 14, 2021
Leidos is seeking a Sr. Linux System Administrator to support a
large enterprise IT contract for the DOD, ISEO. This role requires
an individual that is technical in Unix/Linux security hardening
and able to provide Subject Matter Expert level support to other
systems administrators on configuration best practices. This
individual should be detail oriented in order to capture customer
inquiries appropriately. This role is responsible for interacting
with customers to handle service inquiries and problems.
Duties include examining highly complex customer problems and
suggesting and implementing appropriate corrective action to
initiate a repair or return, troubleshoot in Windows, Macintosh,
and UNIX/Linux desktop operating systems (thick or virtualized
clients) imaging, desktop applications, user profiles, and general
system problems. This role analyzes recurring problems and
initiates solutions for preventing reoccurrence. Individuals
in this role may be required to remotely log into the end users'
endpoint (desktops and/or servers) in order to perform technical
software configuration, rebooting, and other remedial actions.
Experience with interacting with customers, senior managers, and
customers, to handle service inquiries and problems.
Develop automation tools by writing/modifying scripts for
deployment, maintenance and system monitoring using Linux shell
scripts, Python, Perl, and other scripting languages.
Plan, document, review and maintain system administrations
guidelines and policies.
Resolve Linux system errors and crashes, disk space problems,
huge file system and full disk errors.
Implementation and troubleshooting of Linux network services
such as NFS, NTP, FTP, SSH, DNS, NIS, Sendmail, Apache SMTP.
Configure LDAP server and LDAP client on Linux machines for
authorization and authentication.
Build new Linux Virtual Machines and physical server using
templates and ISOs.
Create new Linux templates and STIG them using DISA
Manage package install/upgrades using YUM and RPM.
Experience creating and deploying Ansible playbooks.
Experience in backend solution, day to day system admin and
monitoring, file system management and disk management and creation
of shell scripts for the automation of tasks and the extraction of
Hardware and software installations, upgrades, maintenance,
security analysis and network performance and tuning of Linux
servers in a virtual infrastructure.
Installation and maintenance of RedHat Satellite servers to push
changes to various servers simultaneously.
Mentor junior team members.
Update operations and maintenance documentation for 24/7/365
Support operations across multiple geographic locations.
Develop solutions to complex technical issues.
Provide follow-up reports (technical findings, feedback,
resolution steps taken) for Root Cause analysis, engineering
technical assessment and process improvement initiatives
Complete Automated patching using RHEL Satellite - install,
configure, manage patches, and upload update
Experience Installing, configuring, securing, and
troubleshooting CentOS, RHEL, or Ubuntu Linux Administration
Extensive automation experience with PowerShell and Shell
Scripting for automating Linux installs
10+ years of practical experience administering Linux servers in
a physical and virtual infrastructure Enterprise environment.
RHCSA or RHCSE certification a plus.
Experience mentoring junior personnel
Extensive knowledge of DELL (Power Edge), HP (Proliant servers),
Sun-Fire T-series Enterprise Servers
Extensive knowledge of VERITAS NetBackup, Splunk, Solarwinds,
Ansible, VMWare, RedHat LVM tools.
Experience with the following languages: Bash, Perl, C, C++,
JAVA, Python, Ansible playbooks.
Network experience and understanding with the following: TCP/IP,
NIS, NFS, DNS, DHCP, FTP/TFTP, SSH, SFTP, ARP.
Experience with storage tools such as LVM, SCSI, Ext 3, Ext 4,
XFS, NAS (NFS, SAMBA, RAID 0/1/5) and SAN (iSCSI, FiberChannel)
Candidate must, at a minimum, meet DoD 8570.11- IAT Level II
certification requirements (currently Security+ CE, CCNA-Security,
GSEC, or SSCP)
The candidate must have Bachelor’s Degree with 8 – 12 years of
prior relevant experience or Masters with 6 – 10 years of prior
Hyper Converged Infrastructure (HCI)
Due to the nature of the government contracts we support, US
Citizenship is required.
An active TS/SCI with polygraph is required for this
External Referral Bonus:
External Referral Bonus $:
Potential for Telework:
Clearance Level Required:
Top Secret/SCI with Polygraph
Scheduled Weekly Hours:
Keywords: Leidos, Alexandria , Senior Linux System Administrator, Other , Alexandria, Virginia
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