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Linux DevOps Administrator
Linux DevOps AdministratorThe Judge Group • Phoenix, AZ
Linux DevOps Administrator

Linux DevOps Administrator

The Judge Group • Phoenix, AZ
[job_card.30_days_ago]
[job_preview.job_type]
  • [job_card.permanent]
[job_card.job_description]

Position Overview

Our client is seeking an experienced Senior Linux Administrator to support a mission-critical research environment that directly enables world-class research. This is a senior individual-contributor role requiring deep technical expertise in Red Hat Enterprise Linux ecosystems (Rocky Linux, RHEL, CentOS), automation, and operational excellence in a highly collaborative non-profit research setting. This position is located within a group otherwise engaged in management of Windows-based directory services and Nutanix virtual environments, that is transitioning to a more DevSecOps automated operations regime.

Required Qualifications

  • Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent professional experience)
  • W2 Only
  • 7+ years of hands-on Linux systems administration experience in production environments
  • Extensive experience with Rocky Linux and other Red Hat-based distributions

Core Technical Competencies

Expert-level administration of Rocky Linux / RHEL including :

  • Systems service management
  • Package management (dnf / yum)
  • Filesystem administration and optimization (ext4, XFS, LVM)
  • Security hardening and compliance (CIS benchmarks, SELinux, firewalld)
  • SSSD and Active Directory realm binding
  • Patch management strategies and execution
  • Kernel, filesystem, and network performance tuning
  • Strong proficiency in core networking concepts and protocols, including :

  • In-depth understanding of the TCP / IP stack and packet flow
  • IPv4 / IPv6 addressing, subnetting, VLSM, and CIDR notation
  • Static and dynamic routing principles (OSPF, BGP, EIGRP experience a plus)
  • Configuration and troubleshooting of DHCP, DNS (including BIND and authoritative / resolver roles), and related services
  • VLANs, trunking (802.1Q), and Layer 2 / Layer 3 switching fundamentals
  • Common network services and protocols (NTP, SNMP, ICMP, ARP,
  • Packet analysis using tools such as tcpdump and Wireshark
  • Monitoring :   Nagios / Core administration, check development, and maintenance

    DevOps and automation :   Ansible (playbook development, inventory management, large-scale automation)

    Container technologies  (Docker / Podman) – build, optimization, troubleshooting Kubernetes and Red Hat OpenShift experience

    Strong scripting capability :   Bash, sed, awk, grep (must be able to develop and debug complex scripts)

    Preferred Skills & Experience

  • Administration of NetBox or similar CMDB / IPAM solutions
  • GitLab administration and CI / CD pipeline experience
  • Perl and Python scripting (including REST API integrations)
  • Cohesity backup platform
  • Nutanix AHV and VM management
  • Working knowledge of Active Directory and Windows Server support
  • Familiarity with Atlassian tools (Jira, Jira Service Management, Confluence, JSM Assets)
  • Key Responsibilities

  • Proactively monitor, maintain, and troubleshoot Linux-based research computing systems
  • serving premier biomedical researchers
  • Provide white-glove, courteous, and clear technical support via ticket system and direct
  • researcher interaction
  • Partner with DevSecOps and InfoSec team members to create, enhance, and harden automation of Linux system management
  • Own and continuously improve Standard Operating Procedures (SOPs) in Confluence
  • Actively participate in weekly Change Control process using Jira Service Management
  • Maintain accurate, real-time infrastructure documentation and asset records in NetBox
  • and JSM Assets; coordinate with Finance for federal grant compliance
  • Track daily tasks, projects, and deliverables in Jira; participate in monthly workload review
  • Collaborate closely with DevSecOps, Network, Windows, HPC and Information Security
  • teams to resolve complex incidents
  • Offer guidance and mentorship to other technical staff to learn Linux system administration and related technologies and skillsets
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    Linux Administrator • Phoenix, AZ

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