Senior Linux Systems Architect — Enterprise, Automation & Security

AV; Huntsville (AL); On-site; USD 91,000 - 139,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401K match

9/80 schedule

Holiday shutdown

Job summary

AV seeks a Senior Linux Systems Administrator to design, deploy, secure, and operate enterprise Linux infrastructure across on‑premises and multi‑cloud environments. You will lead Canonical Landscape deployment for Ubuntu endpoints, enforce MFA via PAM, and harden systems to NIST/CMMC/STS benchmarks.

Expect cross‑team collaboration on automation, storage, and service desk escalation with a focus on reliability.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or equivalent.
• 8–12 years of total IT infrastructure experience, with 6+ years in enterprise Linux systems administration.
• Deep, hands-on administration of Oracle Linux, RHEL, and Ubuntu Server/Desktop.
• Experience with Canonical Landscape, Red Hat Satellite, or Foreman for endpoints at scale.
• Experience implementing MFA/PKI/Smartcard integration and SSSD/FreeIPA bridging.
• Direct experience hardening Linux to NIST SP 800-171, CMMC Level 2, or DISA STIG.
• Proficiency with Ansible and Bash/Python scripting.
• VMware vSphere/ESXi and enterprise storage (LVM, NFS, iSCSI).
• U.S. Person status for ITAR/EAR compliance; willingness to obtain DoD clearance if required.

Responsibilities

• Design, build, configure, and maintain mission-critical Linux servers across on-prem and cloud environments.
• Architect, deploy, and administer Canonical Landscape for hundreds of Ubuntu endpoints.
• Implement and enforce MFA at desktop and SSH login, including PAM module engineering and AD/LDAP bridging.
• Harden systems to NIST 800-171, DISA STIG, CIS Level 2 benchmarks with SELinux/AppArmor and auditd.
• Develop and maintain IaC and configuration baselines using Ansible, Terraform, Puppet/Chef; Bash/Python scripting.
• Configure and troubleshoot SAN/NAS storage and VMware ESXi/vCenter virtualization for Linux guests.
• Provide Tier 3 escalation support for engineering tools, build environments, and core services.
• Design backup/recovery workflows and monitor system health with Prometheus, Grafana, Zabbix.

Skills

Linux administration

MFA/PAM integration

Ansible

Terraform

Puppet/Chef

VMware vSphere

Bash/Python scripting

Kubernetes/Docker

Security clearance/ITAR

Education

Bachelor’s degree in Computer Science or related field

Tools

Canonical Landscape

Red Hat Satellite

Foreman

VMware vSphere

SSSD/FreeIPA

Job description

AV seeks a Senior Linux Systems Administrator to design, deploy, secure, and operate enterprise Linux infrastructure across on‑premises and multi‑cloud environments. You will lead Canonical Landscape deployment for Ubuntu endpoints, enforce MFA via PAM, and harden systems to NIST/CMMC/STS benchmarks.

Expect cross‑team collaboration on automation, storage, and service desk escalation with a focus on reliability.