Senior Unix System Administrator

LCI - Lawinger Consulting, Inc.

Senior UNIX Systems Administrator resolving advanced infrastructure issues in enterprise environments. Supporting AIX, HP-UX, and Solaris with a focus on troubleshooting and system maintenance.

Posted 8/1/2026full-timeARVADA • Colorado • 🇺🇸 United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in Enterprise UNIX administration, troubleshooting, and support across IBM AIX, HP-UX, and Oracle Solaris platforms. Proficient in performance tuning, disaster recovery, and maintaining high availability in production environments.

Highest-signal resume keywords

Enterprise UNIX AdministrationIBM AIX SupportHP-UX SupportOracle Solaris SupportShell Scripting

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Logical Volume Manager (LVM)Filesystem AdministrationHigh Availability ClusteringPerformance TuningEnterprise StorageTCP/IP NetworkingPatch ManagementOperating System InstallationBoot Process TroubleshootingDisaster Recovery

Soft Skills

Technical Expertise SharingContinuous Learning

Tools & Technologies

NFS AdministrationSMB/CIFS AdministrationLDAP IntegrationActive Directory IntegrationPAMKerberos

Industry Keywords

UNIX InfrastructureProduction EnvironmentsOn-Call RotationInternal UNIX Lab Maintenance

Tech Stack

Tools & technologies

NFSOracleShell ScriptingTCP/IPUnix

About the role

Key responsibilities & impact

Resolve advanced UNIX infrastructure and operating system issues for enterprise customers
Troubleshoot complex storage, networking, performance, boot, and clustering problems
Support production environments running AIX, HP-UX, and Solaris
Implement solutions remotely and occasionally on-site
Participate in a low-frequency on-call rotation for critical customer escalations
Maintain and expand internal UNIX lab environments for testing and validation
Share technical expertise through quarterly webinars and knowledge sharing
Continuously learn and develop expertise across supported UNIX platforms

Requirements

What you’ll need

Commercial UNIX Experience
Candidates must have strong hands-on production experience with at least two of the following platforms: IBM AIX, HP-UX, Oracle Solaris
Experience supporting all three platforms is highly preferred.
Qualified candidates should demonstrate experience with many of the following:
- Enterprise UNIX administration and troubleshooting
- Logical Volume Manager (LVM)
- Filesystem administration (JFS/JFS2, ZFS, VxVM, SVM)
- High Availability clustering (PowerHA/HACMP, Serviceguard)
- Shell scripting (ksh, sh, bash)
- Performance tuning and diagnostics
- Enterprise storage (SAN, Fibre Channel, multipathing)
- NFS and SMB/CIFS administration
- TCP/IP networking and troubleshooting
- LDAP, Active Directory integration, PAM, and Kerberos
- Patch management and security hardening
- Operating system installation, upgrades, and disaster recovery
- Boot process troubleshooting across enterprise UNIX platforms

Benefits

Comp & perks

Medical, Dental & Vision Insurance
Health Savings Account (HSA) with employer contributions
Employer-funded Life Insurance
401(k) with employer contributions
Employee Ownership Program
Unlimited Paid Time Off
Paid Company Holidays
Flexible work environment (Remote, Hybrid, or On-Site)