Senior Linux Systems Administrator

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Senior Linux Systems Administrator Job ID: T2600057 Location: Princeton, NJ, United States Date Posted: Mar 8, 2026 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: On-Site Benefits: Click here Share mail Apply Now >Apply Now >

Job Description 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
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.

Qualifications ? Qualifications

• 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 systems (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).
• U.S. Citizenship with the ability to obtain and maintain a Public Trust Clearance. Target salary range: $120,001 - $160,000. The estimate displayed represents the typical salary range for this position based on experience and other factors.

Overview SAIC accepts applications on an ongoing basis, and there is no deadline. SAIC is a premier Fortune 500 mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, civilian, and intelligence markets includes secure, high-end solutions in mission IT, enterprise IT, engineering services, and professional services. We integrate emerging technology rapidly and securely into mission-critical operations that modernize and enable critical national imperatives. We are approximately 24,000 strong, driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.5 billion. For more information, visit saic.com. For ongoing news, please visit our newsroom.

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