Join Postiefs

Senior Linux Administrator – Mailing – Zimbra Collaboration Suite

  • 5+ years Linux experience in a production environment 24X7X365
  • Solid Advanced Linux administration skills with Red Hat Enterprise Linux (RHEL), CentOS, or Oracle Linux versions 5 and 6, and bonus for 7 – Install, configure, patch and troubleshoot
  • Experience with the full deployment cycle: Dev, Test, QA, Staging, and production.
  • Ability to work with other groups: QA, Engineering, and DEV
  • Very strong troubleshooting skills and the ability to resolve problems
  • Experience with shell scripting: python or perl
  • Participating in a 24x7x365 On-call rotation.
  • Candidates must have good verbal and written communication skills.
  • General knowledge of networking TCP/IP services (DNS, DHCP, SSH, SMTP, HTTP, FTP, NFS, CIFS, VLANs, SNMP, VPN, and SSL).
  • Understanding of storage concepts RAID levels 1, 5 and 6
  • Working knowledge in a virtualized environment using VMWare 5.5 Bonus for 6
  • Experience with SAN/NAS storage
  • Experience in cPanel/WHM and Plesk .
  • Experience in Zimbra mailbox configurations (scheduling, restores, permissions, ZCO)
  • Experience in custom Zimbra scripting in support of a mail migration project
  • Thrive in a team environment and work well with others.

Nice to haves:

  • Experience working in a multi hosted sites
  • Networking: Firewalls, switches, routers and Load Balancer concepts
  • Understanding of automatic configuration tools like puppet, chef or cFengine
  • Database experience – MySQL, Oracle or Postgres – Setup, tuning, backup and restore

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