[Remote] Sr. Unix System Administrator

Note: The job is a remote job and is open to candidates in USA. LCI - Lawinger Consulting, Inc. is seeking a senior UNIX systems administrator to support enterprise customers and resolve complex production infrastructure issues. The role focuses on AIX, HP-UX, and Solaris environments, including operating systems, storage, clustering, networking, and performance optimization.

Responsibilities

• 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

Skills

• Strong hands-on production experience with at least two of the following platforms: IBM AIX, HP-UX, Oracle Solaris
• 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
• Has extensive production experience supporting enterprise UNIX environments
• Can independently troubleshoot highly complex technical issues
• Is comfortable working directly with customers
• Experience supporting all three platforms
• PowerHA / HACMP
• Serviceguard
• Solaris Zones or Logical Domains (LDOMs)
• NIM or Ignite-UX
• Veritas Volume Manager
• SPARC systems
• IBM Power Systems
• NetApp, EMC, Ceph, GPFS, or Lustre storage
• Python, Perl, or Ruby automation
• Legacy UNIX platforms such as Tru64 or IRIX
• Enjoys solving difficult infrastructure problems
• Thrives in a collaborative, highly technical team

Benefits

• 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)
• Remote flexibility within the United States
• Access to a dedicated multi-platform UNIX lab
• Opportunities to continue expanding your UNIX expertise

Company Overview

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