Systems Administrator – UNIX / LINUX

Job Description

Time Type:

Role Details:

Time Type: Full Time

Pay: DOE

Job Location: 1350 IH 35 N, San Marcos, TX 78667

Job Summary:
The Systems Administrator – UNIX / LINUX supports, maintains, and optimizes IBM Power/AIX environments in a mission-critical enterprise setting. This role is responsible for system availability, performance, security, and lifecycle management across development, test, and production environments.

Supervisory Responsibilities:
• None.

Duties/Responsibilities:
• 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 PowerVM 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).
• Support backup and recovery processes; participate 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.

Required Skills/Abilities:
• This position requires travel with overnight stays.
• Must have a current driver’s license and auto liability insurance.

Education/Experience
• 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 (PowerHA, 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.

Physical Requirements
• 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.