Senior RHEL Systems Administrator & Automation Lead

Trinzic; Huntsville (AL); Presencial; USD 110.000 - 140.000; Jornada completa

Descripción de la vacante

KBR is seeking a Senior Linux Systems Administrator to lead RHEL server and workstation administration, focusing on build, hardening, and lifecycle management. You will drive automation efforts with Ansible, implement DISA STIG controls, and mentor junior staff in secure, scalable Linux environments supporting mission-critical systems.

Collaborating with cybersecurity and engineering teams, you will ensure RMF/NIST compliance, manage provisioning and patching across air-gapped and connected

Formación

• U.S. Citizenship is required.
• Active Secret clearance is required.
• Bachelor’s degree in IT/CS or related STEM field with 8+ years of experience.
• Experience administering RHEL servers and workstations in an enterprise environment.
• Experience implementing DISA STIG hardening and SELinux on RHEL.
• Experience with Ansible, Bash, or Python for automation.
• Experience with Linux patch management (DNF/YUM/RPM) and repos.
• Experience integrating Linux with enterprise identity and directory services.
• Experience troubleshooting OS, storage, networking, authentication, and apps.
• Experience developing and maintaining technical documentation.

Responsabilidades

• Design, deploy, administer, and troubleshoot RHEL servers and engineering workstations.
• Develop and maintain standardized RHEL baselines, configurations, and golden images.
• Manage provisioning, content, subscription, and patch tooling, including in disconnected envs.
• Implement DISA STIG configurations; perform compliance scans and remediation.
• Administer workstation GNOME configurations and security settings.
• Integrate RHEL with IdM, AD via SSSD, Kerberos, LDAP, and CAC/PKI authentication.
• Develop Ansible playbooks and scripts to automate configuration management and compliance.
• Manage storage with LVM, XFS, NFS, and multipath configurations.
• Monitor performance, capacity, and logs; perform root-cause analysis.
• Plan OS upgrades and modernization for resiliency and automation.
• Coordinate with IA/Cybersecurity to maintain RMF/NIST/NIST 800-53 compliance.
• Document system configurations, inventories, and SOPs.
• Serve as Tier 2/3 escalation; mentor junior admins in RHEL and automation.
• Advise program leadership on Linux architecture and lifecycle planning.

Conocimientos

RHEL administration

Ansible automation

Bash scripting

Python scripting

Identity management

Security hardening

Troubleshooting

Documentation

Educación

Bachelor’s degree in IT/CS or related STEM

Herramientas

Red Hat Satellite

IdM (Red Hat Identity Management)

SSSD

CAC/PKI authentication

Descripción del empleo

KBR is seeking a Senior Linux Systems Administrator to lead RHEL server and workstation administration, focusing on build, hardening, and lifecycle management. You will drive automation efforts with Ansible, implement DISA STIG controls, and mentor junior staff in secure, scalable Linux environments supporting mission-critical systems.

Collaborating with cybersecurity and engineering teams, you will ensure RMF/NIST compliance, manage provisioning and patching across air-gapped and connected