Systems Admin - Unix​/Linux

This is a full-time, direct hire opportunity.

This role will be onsite 5 days per week in San Marcos, TX. Candidates must live within 50 mile radius.

• Installs, configures, administers, and supports IBM AIX operating systems on Power hardware.
• Installs, configures, administers, and supports different LINUX operating systems.
• Performs system provisioning, upgrades, patching, and firmware management.
• Manages LPARs, VIOS, and Power
  
  VM virtualization.
• Monitors system performance, capacity, and availability; troubleshoots complex issues.
• Implements and maintains system security, hardening, and compliance controls.
• Automates administrative tasks using shell scripting (ksh/bash).
• Supports backup and recovery processes; participates in disaster recovery planning and testing.
• Collaborates with application, storage, network, and security teams.
• Provides on-call support and responds to incidents as required.
• Maintains system documentation and operational procedures.
• Other assignments and duties as assigned by management.
• Attends and participates in team meetings and training sessions.

Will require occasional travel (1-2 times per quarter).

• 5+ years of hands‑on experience administering UNIX in an enterprise environment.
• Strong knowledge of IBM Power Systems architecture and virtualization.
• Experience with VIOS, LPAR management, and NIM.
• Proficiency in UNIX shell scripting (ksh, bash) and cron jobs.
• Solid understanding of TCP/IP networking and storage concepts.
• Experience with system monitoring, performance tuning, and troubleshooting.
• Familiarity with backup solutions (e.g., TSM/Spectrum Protect or equivalent).
• Experience with High Availability solutions (Power
  
  HA, HACMP).
• Experience with automation/configuration tools (Ansible, Chef, etc.).
• Familiarity with cybersecurity frameworks, scanning tools, or audit compliance, preferred.
• Experience with scripting languages beyond shell (Python, Perl), preferred.
• Will consider candidates with Red Hat Enterprise Linux (RHEL) experience and minimal UNIX.

• Prolonged periods sitting at a desk and working on a computer.
• Must be able to frequently lift and/or move 10 pounds and occasionally lift up to 50 pounds at times.
• Standard office hours apply with occasional weekends and holidays.
• Must be regularly available and willing to work on average 40 hours per week during business hours or as the employer determines are necessary or desirable to meet business needs.
• Must maintain regular and acceptable attendance at such level as is determined by management.
• The noise level in the work environment is usually moderate.