Sr. Linux Administrator
Gregory Laka & Co. - Chicago, IL

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(1) LINUX systems administration to include performance monitoring, performance tuning, installs, upgrades, backups, recoveries;

(2) File system management;

(3) Network administration;

(4) Shell scripting;

(5) Configuring and monitoring system security;

(6) Compiling applications and kernels to optimize system performance;

(7) Time synchronization;

(8) Installation automation;

(9) System automation;

(10) Virtualization.

MUST have 2 years of STRONG/CURRENT LINUX administration with Red Hat Enterprise Linux or Centos or similar.

MUST have STRONG/CURRENT or RECENT Linux kernel and/or latency tuning or puppet experience.

MUST have STRONG/CURRENT Python or Perl or shell scripting experience.

MUST have STRONG/CURRENT experience with Debian or Ubuntu or Gentoo.

MUST have EXPERT level TCP/IP networking including Ethernet, IP, ARP, IP, TCP, UPD, etc.

MUST have STRONG/CURRENT Filesystem management including partitioning, LVM, hardware and software RAID.

MUST have STRONG/CURRENT network administration including configuring IP unicast and multicast operation, DHCP, DNS, FTP, NFS, Samba or Apache.

MUST have STRONG/CURRENT experience configuring and monitoring system security including user/group administration, authentication, auditing, packet filtering, etc.

MUST have STRONG/CURRENT experience tracing network activity using tools such as tcpdump, snoop, wireshark, sniffer, etc.

MUST have STRONG/CURRENT experience compiling applications and kernels to optimize system performance.

MUST have system monitoring experience with SNMP and tools like Cactus, Nagios, etc.

MUST have time synchronization with NTP, PTP, PPS or IRIG.

MUST have installation automation experience with kickstart or a similar product and system automation experience with Puppet, cfengine, or similar.

MUST have virtualization experience with KVM, Xen or similar.