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UNIX Administrator

You will be a part of a team providing operating system administration across three shifts, 24 x 7 x 365 (except for Federal holidays where support will be provided on a call back basis) for Red Hat Linux. This includes system administration activities and immediate troubleshooting efforts when contacted by the Service Desk to ensure outages or incidents are resolved as quickly as possible for over 2800 Linux servers, as well as work on teams with customers and partners, end users, programmers and analysts, Database Administrators (DBAs), and application and network administrators. 


  • Provision operating systems on new standalone or virtual servers using automated tools (kickstart, jumpstart, or ignite).
  • Configure virtual servers within VMware, Logical Domains (LDoms), Zones, Dynamic Domains.
  • Configure hardware RAID implementations on Redundant Array of Independent Disks (RAID) controllers and disk storage shelves.
  • Configure and implement host bus adapters (HBAs) for both SAN storage and SAN boot devices.
  • Configure and implement multipath network interfaces.
  • Install and configure system file systems such as ZFS, vxfs, Advanced File Systems, and software RAID managers such as Logical Storage Manager, Solaris Volume Manager, and VERITAS Volume Manager.
  • Install and configure software associated with a clustered environment.  Cluster software may include Veritas Cluster Server (VCS), General Parallel File System (GPFS), Cluster File System (CFS), High Availability Cluster Multi-Processing (HACMP), Oracle Real Application Clusters (RAC), Symantec’s Veritas Storage Foundation for Oracle RAC.
  • Configure and implement backup client software.- NetBackup
  • Install layered systems software, such as Apache, Web Logic, Oracle DB, Tuxedo, etc.
  • Maintain existing operating systems.


  • Patching OS on a quarterly cycle using technologies to limit downtime and provide quick back out mechanism.
  • Upgrading OS as required for system applications or every 2.5 years, whichever occurs first.
  • Installing firmware upgrades as needed to resolve issues or on an annual basis, whichever occurs first.
  • Automation/configuration management using Puppet/ Ansible / Red Hat Satellite Server / CA PAM.
  • Reinstalling operating systems after hardware refresh.
  • Monitoring and maintaining adequate file system space for the operating system and application files.
  • Administrating user accounts and passwords using Sun One Directory Server (LDAP) and NFS.
  • Monitoring and maintaining system accounting files and logs and system error logs.
  • Implementing security hardening requirements and configurations to remediate security vulnerabilities listed in security audit and scan vulnerability reports; remediation must be accomplished within the timeframe defined in the report.  Timeframes to remediate are based on the severity level of the finding, high 60 days, medium 90 days, and low 120 days. 
  • Creating and maintaining local Standard Operating Procedures (SOPs) related to daily Linux system administration related functions.
  • Assisting with the planning and documenting of disaster recovery (DR) procedures and maintain documentation related to DR test and system changes.
  • Performing knowledge transfer of critical Linux System administration tasks to EO System Administrators.
  • Monitoring system performance and tune to optimize usage of system resources.
  • Automating routine tasks through shell and Perl scripting.

General Activities:

  • Participate in CDCO support activities such as Disaster Recovery, data replication,     infrastructure support activities such as documentation, develop architectural diagrams and troubleshoot performance issues.
  • Lead CDCO sponsored initiatives, to include developing schedules and plans, communicating progress to management in both verbal and written formats, identifying barriers, and identifying and evaluating alternatives.
  • Track and document all system changes, problems, issues, and work tasks within CA’s Unicenter Service Desk (USD) through change orders, service requests, incident and/or problem tickets.
  • Participate and contribute at project meetings as subject matter expert (SME) for UNIX system administration related areas.
  • Communicate to project managers, team members, other technical administrators and/or end users the status and findings with tickets, incidents, and problems.
  • Use administrative tools such as CA Monitoring Suite, Nagios and/or Oracle Enterprise Operations Center (formerly Sun xVM Operations Center) for monitoring and administering Unix servers. 

Qualifications/Education requirements:

  • Bachelor’s Degree in Computer Science or business related field preferred
  • 5+ years senior-level experience with Unix Administration
  • Significant experience with Unix software supporting large enterprise installations (100+ servers) across a national infrastructure.  Should have experience in monitoring software/hardware performance, integrating disparate hardware to operate with Unix environment

Preferred Skills:

  • Implementation and support of the Unix software on both physical and virtual platforms
  • Significant experience with Unix/Linux
  • Experience with continuous process improvement methods relating to both IT and business processes including the use of the dashboard, KPIs and process analysis techniques.
  • Demonstrable experience leading a globally distributed IT team, setting accountabilities and providing development coaching.

Position requires the ability to obtain a security clearance.


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