System Administrator (Red Had / Linux)

About the role

TISTA Science and Technology is seeking a System Administrator to join our growing team. At TISTA, you'll do meaningful, mission-driven work that improves lives alongside teammates you trust and leaders who are transparent and supportive. We invest in your learning and internal mobility so you can build a career that keeps advancing. We're proud to serve and hire Veterans, and we put people first in everything we do.

Responsibilities

• Install, configure, and maintain Red Hat Linux servers.
• Monitor server performance, availability, and system health.
• Perform OS patching, upgrades, and vulnerability remediation.
• Configure and manage user accounts, permissions, and authentication.
• Troubleshoot Linux operating system, network, and application issues.
• Implement backup, disaster recovery, and high availability solutions.
• Manage storage systems, file systems, and LVM configurations.
• Configure and maintain DNS, NFS, SSH, FTP, Apache, and related services.
• Support virtualization technologies such as VMware, vSphere or Red Hat Virtualization.
• Develop shell scripts and automation using Bash, Python, or Ansible.
• Maintain system security compliance and audit standards.
• Support cloud environments such as Amazon Web Services, Microsoft Azure.
• Create and maintain technical documentation and operational procedures.
• Participate in on-call support rotations and incident response activities.

Qualifications

• Experience with Red Hat Enterprise Linux administration.
• Knowledge of Linux commands, services, and troubleshooting.
• Experience with shell scripting and automation tools.
• Understanding of TCP/IP networking, firewalls, and security.
• Experience with system monitoring tools.
• Knowledge of LDAP, Active Directory integration, and authentication methods.
• Familiarity with SAN/NAS storage technologies.
• Experience with virtualization and cloud platforms.
• Experience with containers and orchestration technologies.

Preferred Skills

• Basic Shell scripting.
• Basic Networking Skills.
• CI/CD pipelines and DevOps methodologies.
• Cloud-hosted Linux administration exposure is preferred where hybrid environments are in scope.

Preferred Certifications

• Red Hat RHCSA
• RHCE
• Cloud certifications (AWS/Azure)

Education

• Bachelor's degree in computer science, electronics engineering or related technical discipline.
• Eight (8) years of additional relevant experience may be substituted for education.

Clearance

The ability to pass a Tier 2/Moderate Background Investigation.

Location & Schedule

• Department of Veteran's Affairs (100% On-site)
• Monday - Friday (8:00 AM - 4:30 PM EST Time)
• Hines Information Technology Center (HITC) 5000 S Fifth Avenue, Hines, IL 60141