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Senior Linux Systems Administrator

Job ID: 2305667
Location: PRINCETON, NJ, United States
Date Posted: May 15, 2023
Category: Information Technology
Subcategory: Sys Administrator
Schedule: Full-time
Shift: Day Job
Travel: No
Minimum Clearance Required: None
Clearance Level Must Be Able to Obtain: Public Trust
Potential for Remote Work: No Remote
Benefits: Click here

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Job Description


SAIC is recruiting for a Senior Linux Systems Administrator to join our program as a general technologist to support our NOAA GFDL program in Princeton, NJ serving the NOAA GFDL lab in a highly scientific user and mission driven facility.  This individual would support both projects (60%) and user (40%) actives in a high interrupt tiered support environment requiring rapid response to the most complex customer systems inquiries.   On a daily basis this individual may divide their time between (1) managing junior Admins to support lower level issues; (2) identifying, evaluating and prioritizing customer problems to ensure that inquiries are resolved appropriately; (3) conducting project work on several complex system projects simultaneously; and (4) managing and actively reporting on project status.  

The ideal candidate must be an independent self-starter, be adept at supporting both Linux  in a heterogeneous environment, and have excellent customer-­facing communication and consultation skills (with managers and/or scientists).  

The duties will include, but not be limited to:

  • Providing Mid-­Tier to Top-­Tier Systems Administration for clients and servers in a heterogeneous environment
  • Systems Administration - Maintain IT Security posture according to organization requirements, Manage rigorous patching schedule for all systems, Manage existing Patching deployment tools, maintain and enhance current tools, replace the current backup system with a new one
  • Installing SW packages, compiling where necessary, Maintenance inventory of all assets and applications
  • Managing  smart card authentication infrastructure
  • Supporting Project (60%) and User (40%) actives in a high interrupt environment
  • Writing/updating/enhancing system documentation concerning problem resolutions and HPC assets)
  • Writing technical justifications for the procurement of hardware & software



  • B.S. in Computer Science, Information Technology, Software Engineering, or related field and nine (9) years of experience, masters and seven (7) years of experience
  • Demonstrated proficiency in Linux  administration best practices
  • Demonstrated knowledge of Red Hat Enterprise Linux (RHEL) or derivatives (e.g., AlmaLinux OS, CentOS, Oracle Linux, Rocky Linux) is a plus
  • Understanding of licensing structures for Red Hat products is a plus
  • Documented experience with scripting (e.g., shell, bash, tcsh, perl, python, ruby)
  • Documented experience with managing, deploying, or migrating centralized backup system(s) (e.g., Amanda, Bacula, Backup Exec, NetBackup, ReaR)
  • Documented knowledge of configuration management tools (e.g., ansible, chef, puppet, or saltstack)
  • Experience with configuration and support of access methods (e.g., VPN, SSH tunneling)
  • Experience managing and maintaining database clusters, preferably Percona XtraDB/MySQL cluster
  • Experience managing software scalable network file systems and centralized storage appliances
  • Experience supporting enterprise logon with smart card authentication on Linux (e.g., BeyondTrust, Centrify, SSSD)




Covid Policy: SAIC does not require COVID-19 vaccinations or boosters. Customer site vaccination requirements must be followed when work is performed at a customer site.


SAIC® is a premier Fortune 500® technology integrator driving our nation's technology transformation. Our robust portfolio of offerings across the defense, space, civilian, and intelligence markets includes secure high-end solutions in engineering, digital, artificial intelligence, and mission solutions. Using our expertise and understanding of existing and emerging technologies, we integrate the best components from our own portfolio and our partner ecosystem to deliver innovative, effective, and efficient solutions that are critical to achieving our customers' missions.

We are approximately 26,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer, fostering a culture of diversity, equity, and inclusion, which is core to our values and important to attract and retain exceptional talent. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.4 billion. For more information, visit For ongoing news, please visit our newsroom.

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