Senior System Administrator

Profile

Responsibilities:
* Configure and tune system and network parameters for optimum performance.
* Monitor system stability and performance.
* Help develop tools to build, maintain, and monitor systems.
* Ensure 24x7x365 operation.
* Rapidly scale systems to meet demand.
* Participate in architecture decisions.
* Write comprehensive documentation.
* Be on 24x7 oncall pager rotation.
Qualifications:
* 6 years as a Unix/Linux administrator
* 10 years as a Sr. Unix/Linux administrator.
* Most recently worked with RHEL/CentOS 5/6; must have deep knowledge of these environments, and be able to answer probing questions about them.
* Advanced working experience in the following areas:
* MTA (pmta), web servers (Apache), load balancers (F5), network, host security
* Clustering technologies - Veritas Cluster Server (VCS), Oracle RAC
* Storage - (EMC, Brocade, NetApp)
* Protocols – DNS, SMTP, LDAP, HTTP, SSL, NFS
* Monitoring/trending tools - Zabbix, MON, nagios
* Mid to senior level programming/scripting in at least two languages (one any kind of shell; the other a higher-level language).
* Kickstart server experience, Linux repository maintenance, and rpm package creation/manipulation
* Solaris and ZFS experience a plus
* Experience on AWS is a plus.
* Solid grasp of TCP/IP networking fundamentals, firewalls, DMZ configuration and security protocols.
* Multiple years of experience in fast-paced high-availability production and non-production environments (e.g. ISPs, ASPs, SaaS, etc.) with an emphasis on remote lights-out” management of systems. A sense of urgency (but not panic) is key.
* Excellent troubleshooting ability.
* Excellent verbal, written, and customer service skills.
* Team player with a drive to learn. Apply for this job

Company info

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