Senior System Administrator in Buffalo, NY

Summary: Under limited supervision, the Senior Systems Administrator administers all aspects of an advanced, distributed computer system supporting an important functional area of company operations. Day-to-day tasks may involve any or all of the following: operating system administration, configuration of mail systems, system installation, SAN administration, fundamentals of security, installing third party software, etc. Duties and Responsibilities: Plans and coordinates system utilization, and performs growth analysis and capacity planning Provides installation, support, and maintenance of Servers and other computer systems Efficiently manage configuration of 200 Servers and services (web, e-mail, dns, etc) Implement/maintain monitoring and trending for all deployed Servers and services Assists with planning for and responding to service outages and other problems ( SLA ?s) Able to take on a leadership role in managing systems-related projects Must be able quickly and correctly diagnose problems with computer systems and introduce the best way to fix the problem Proficient in Scripting or light programming Provide leadership and mentoring to other System Administrators Support a 24x7 staffing model with on-call shifts that include weekends and Holidays Other duties as assigned Education, Experience and Skills: Bachelor of Computer Science preferred, minimum two years of college or equivalent post-high school education or experience 5 years System Administration experience in a large-scale Unix (Linux/Solaris/BSD) environment required; Package management; Automated installs. MUST have experience with external Web client-facing application production system support. Thorough understanding of e-mail protocols and architectures; SMTP (including AUTH, submission), POP, IMAP. (RFC 5322, 5321, 2822, 2821, etc.) Experience with large LDAP deployments (OpenLDAP, etc.) Experience managing LAMP web-farms serving 10 million page views daily; Memcached; Load-balancing. Apache configuration and operation Experience setting up and regularly using monitoring and trending tools (Zenoss, Cacti, Nagios, Resmon); Monitoring, trending experience for various services Experience with revision control systems and usage for managing systems configuration; SVN, Puppet, etc. Experience with managing, operating, monitoring backup systems Experience with large e-mail systems (1 million accounts); High performance MTA?s (Ecelerity, IronPort, StrongMail, Bizanga, Coldspark); Zimbra (or similar) experience preferred Experience in an Enterprise SAN environment required; Familiar with block level access using FC and iSCSI, Director class FC Switches in an HA environment; Multi-pathing; Knowledge of Linux and driver interaction; NetApp experience and Multi-SAN environment preferred Familiarity with fundamental networking/distributed computing environment concepts; can configure NFS, key-based ssh; DNS; familiar with basic networking concepts: switching, routing (BGP,(R)STP, source routing), firewalls, load-balancing at various layers Has a solid understanding of a UNIX-based operating system; understands paging and swapping, inter-process communication, devices and what device drivers do, filesystem concepts (inode, clustering, logical partitions) Experience with Solaris, ZFS, DTrace considered a plus Independent problem-solving, troubleshooting skills, team player, excellent communication skills all required Generally knows several programming languages used for Scripting or automation of routine tasks (bash, Perl, PHP) Required Skills: SYSTEMS ADMINISTRATOR, SYSTEMS ADMIN, SYSTEM ADMINISTRATOR, SYSTEM ADMIN, QMAIL, CYRUS, SENDMAIL, POSTFIX, ZIMBRA, STRONGMAIL, IRONPORT, BIZANGA, COLDSPARK, ECELERITY, MTA, MAIL TRANSFER AGENT, UNIX, LINUX, SOLARIS, BSD, RED HAT, REDHAT, SAN, STORAGE AREA NETWORK, NAS, NETAPP, NETWORK ATTACHED STORAGE, NETWORK-ATTACHED STORAGE To Apply to this job go to http://www.GadBall.com or click here