Linux DevOps Administrator

Location: Phoenix, AZ
Salary: $30.00 USD Hourly - $40.00 USD Hourly
Description:
Position Overview

Our client is seeking an experienced Linux Administrator to support a mission-critical research environment that directly enables world-class research. This is an individual-contributor role requiring deep technical knowledge of 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
• 3+ years of hands-on Linux systems administration experience in production environments
• Experience with Rocky Linux and other Red Hat-based distributions

Core Technical Competencies

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, etc.)
• Packet analysis using tools such as tcpdump and Wireshark

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

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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Contact:

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