Linux System Administrator

Location: Oak Ridge, TN
Job Title: Linux System Administrator
Career Level From: Specialist
Career Level To: Senior Specialist
Organization: Y-12 IT Infrastructure )
Job Specialty: System Administration

We are seeking a highly skilled Senior Red Hat Linux Administrator to manage, optimize, and maintain systems supporting the national security mission to maintain the safety, security, and effectiveness of the United States nuclear weapons stockpile. Working as part of the IT organization’s IT Infrastructure team, the Linux System Administrator position offers you the ability to install, manage, upgrade, and maintain existing Linux and Solaris based infrastructure in a large, distributed network environment.

This role requires a proactive individual capable of supporting mission‑critical computing environments while collaborating with multidisciplinary teams.

You will also be responsible for:

• Managing and administering Red Hat Enterprise Linux and Oracle Solaris systems in support of production environments.
• Installing, configuring, and maintaining RHEL and Solaris servers, ensuring optimal performance and availability.
• Supporting various infrastructure teams and collaborating with SAP Basis and functional teams to ensure seamless operations.
• Performing system monitoring, performance tuning, and capacity planning.
• Troubleshooting and resolving issues.
• Applying system updates, security patches, and managing configuration changes following ITIL standards.
• Developing and maintaining documentation for systems, processes, and procedures.
• Implementing and maintaining backup, recovery, and disaster recovery strategies.
• Ensuring compliance with security policies and best practices.
• Administering and supporting core Linux and Solaris based technologies.
• Providing after‑hours support for emergencies and occasional weekend maintenance.

• Meaningful work and unique opportunities to support missions vital to national and global security
• Top‑notch, dedicated colleagues
• Generous pay and benefits with a stable organization
• Career advancement and professional development programs
• Work‑life balance fostered through flexible work options and wellness initiatives

• Bachelor’s degree in Computer Science, Information Technology, or related field:
  Minimum 4 years relevant experience.
• Master’s degree:
  Minimum 2 years relevant experience.
• Twelve or more years of relevant education, training, and/or progressive experience may be considered to satisfy educational and years‑of‑experience requirements for this posting.
• The ability to obtain and maintain a Department of Energy Q clearance is required.

• 5 years of experience as a Linux systems administrator, with at least a Red Hat Certified System Administrator.
• Experience with Red Hat Enterprise Linux (RHEL) administration, server installation, configuration, and maintenance.
• Red Hat Certified Engineer.
• Experience with Red Hat Satellite.
• Experience with Oracle Solaris.
• Experience with Ansible automation/configuration management.
• Experience configuring, running, and maintaining ZFS.
• Strong understanding of the interactions between applications, operating systems, and third‑party software.
• Strong knowledge of networking, storage, and system security principles.
• Proficiency in scripting languages such as Bash, Python, or Perl for automation and troubleshooting.
• Solid understanding of security best practices for Linux environments.
• Excellent problem‑solving, communication, and teamwork skills.
• Hands‑on experience with virtualization technologies such as VMWare.
• Experience with backup and recovery of physical and virtual computing environments.
• Experience with supporting mission essential systems.
• Experience with containerization technologies (e.g., Singularity, Docker).
• Familiarity with cloud‑based solutions and hybrid environments.

You get #morethanajob. We encourage employees to achieve a healthy personal balance among home, work and the community. One of the ways we embrace work‑life balance is by offering flexible work arrangements that provide alternatives to the traditional workweek, while still meeting business needs. Top…