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Progrexion Teleservices Linux System Admin L3 in San Francisco, California


  • Support the day-to-day operations of corporate production and staging environments by monitoring system performance, configuration, maintenance and repair. Applies revisions to host system firmware and software, etc. Works with vendors to assist support activities.

  • Implement new system and applications, custom scripts and testing procedures to ensure operational reliability. Trains technical staff in how to use new software and hardware developed and/or acquired.

  • Performs troubleshooting as required. As such, leads problem-solving efforts often involving outside vendors and other support personnel and/or organizations.

  • Installs, modifies and maintains systems and utility software on server computer systems. Provides server support related to other software.

  • Ensures high availability and acceptable levels of performance of mission critical environments and staging environments.

  • Develops procedures to maintain security and protect systems from unauthorized use, acts of nature and user abuse.

  • Develops procedures, programs and documentation for backup and restoration of host operating systems and host-based applications. Positions in this classification may perform all or some of the responsibilities above and other related duties as assigned.

Knowledge of

  • Thorough LINUX system administration (Ubuntu/Fedora/CentOS, cron, Users Creation, Group Creation, Permissions, Creations of Folders, FTP, DNS, Proxy, Samba, LDAP, NFS, NIS),

  • SELinux and best practices

  • Shell scripting (BASH, Python, Perl),

  • Configuration Management (SaltStack)

  • VMWare (vSphere and ESXi),

  • Enterprise backup and recovery procedures (Veeam),

  • SAN administration (PURE, NetApp, Dell Compellent),

  • Cisco Server Hardware (UCSM, C-Series servers, B200 Series blades),

  • OSI Model and how it relates to server infrastructure,

  • System performance monitoring tools (Nagios, Zabbix, OpsGenie);

  • Cloud Architecture and administration (AWS, Azure)

Ability to

  • Plan, organize and document complex system design activities and to configure systems to be consistent with institutional policies/procedures

  • Communicate technical/complex information both verbally and in writing

  • Establish and maintain cooperation, understanding, trust and credibility

  • Perform multiple tasks concurrently and respond to emergency situations effectively.


  • Bachelor's degree in Computer Science or related discipline. Relevant experience may substitute for the degree requirement on a year for year basis.

  • 8-10 years of work experience in complex systems design implementation and support.



ID: 2021-4525

Created Date: 11/24/2021

Street: 44 Montgomery Street