Linux Systems Administrator (Tier I) jobs in United States
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Sabre Corporation · 1 month ago

Linux Systems Administrator (Tier I)

Sabre Systems Inc. is seeking a skilled Tier I Linux Systems Administrator to support a mission-critical Department of Defense program focused on high-performance computing operations. The role involves collaborating with senior engineers to maintain and optimize advanced computing infrastructure while performing general system administration functions.

Business IntelligenceInformation TechnologySaaSTourismTravel
badNo H1BnoteSecurity Clearance RequirednoteU.S. Citizen Onlynote

Responsibilities

Perform general Systems Administrator functions supporting all HPC users with courteous responses to their HPC system operations and maintenance activities issues
Support Senior Systems Administrators (SA) in optimizing the functionality and performance of hardware and software components
Ensure availability, integrity, efficiency, and reliability of servers, workstations, and data storage systems (Lustre, Bright Cluster)
Support other System Administrators (SA) in creating, administering, and managing Linux user accounts
Triage Tier 1 Service desk tickets and produce service ticket reports and performance metrics
Support Linux SA and Engineering team in the installation and testing of HPC system components, including setup and configuration of:
+ Hardware and software
+ Computing and data storage servers
+ Networking equipment
+ Computing peripherals
Provide responsive backup management, security issues, set up and configuration of Linux servers and software
Perform timely hardware replacement not covered by third-party vendor maintenance agreements
Assist Network personnel in the configuration of networking equipment, ensuring network security, and managing firewalls
Implement necessary measures to comply with all Program security requirements
Adhere to all IT policies, processes, and procedures
Manage changing priorities

Qualification

Linux Systems AdministrationDoD 8140 IAT II CertificationVMware vSphere 6Scripting BASHScripting PythonScripting PerlKubernetesAnsiblePostgreSQLRisk Management Framework (RMF)Securing Linux systemsCUDAGoogle TensorFlow

Required

Bachelor's degree in STEM discipline (e.g., CS, Engineering, Information Technology, etc.) and 5+ years of relevant experience
Current DoD 8140 IAT II Certification (e.g., Security+ CE)
VMware vSphere 6 and up
Scripting (BASH, Python, or Perl)
Familiarity with Kubernetes, containerized technology, Ansible, and PostgreSQL
Familiarity with the Risk Management Framework (RMF), and securing and hardening Linux systems to meet RMF controls
Knowledge of CUDA, Google TensorFlow, or similar toolsets
This position requires an active Top Secret DoD security clearance (U.S. Citizenship Required)

Benefits

Comprehensive, evolving benefits designed to meet their diverse needs

Company

Sabre Corporation

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Sabre is a software and technology company that powers the global travel industry.

Funding

Current Stage
Public Company
Total Funding
$5.84B
Key Investors
Centerbridge Partners
2025-11-20Post Ipo Debt· $1B
2025-05-19Post Ipo Debt· $1.32B
2024-03-07Post Ipo Debt· $43.6M

Leadership Team

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Kurt Ekert
Chief Executive Officer
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Hugh Jones
Chief Operating Officer
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Company data provided by crunchbase