Provides primary systems administration support to company's unix servers which include IBM, Sun and HP hardware. Operating systems include AIX, Solaris, HP and Linux. Duties include troubleshooting and regular maintenance including mksysb, ufsdump, applying fixes, apars, applying recommended patches, firmware updates, operating system upgrades, volume group/logical volume creation/modification, disk group/volume creation/modification, hardware replacement, new lpar creation/modification, new domain creation/modification, HACMP Cluster, Sun Cluster and Veritas Cluster design, installation, configuration and performance of routine failover testing.