Senior member of small Unix systems team responsible for providing a variety of large-scale messaging, directory and authentication, and instructional computing services to the undergraduate school (FAS). Environment consists mainly of 250+ RedHat and Ubuntu Linux production and development physical and virtual Xen servers deployed in multiple locations.• Principle for FAS e-mail (IMAP/POP and SMTP) systems supporting twenty-five thousand users and approximately two million messages per day. Systems engineered almost entirely with Open Source software - Postfix, UWash and Dovecot IMAP, Spamassassin, Rbldnsd, Bind, Procmail, Amavisd-new, ClamAV, Dkimproxy, Mailman, and Cloudmark Authority (commercial plug-in for Spamassassin).• Team lead for Puppet configuration management system for 200+ Unix systems. • Provide ongoing care and feeding of core infrastructure platforms and services, including Xen virtual server infrastructure, Network Appliance (NFS) and Equalogic (iSCSI) storage devices, LDAP (OpenLDAP and RHDS) and Kerberos infrastructure, XMPP/Jabber services, Apache web servers, and monitoring platforms (Nagios, Cacti, and Splunk). • Developed and/or maintained various automation, provisioning, and reporting tools in Perl, PHP, and shell.

Formerly Peregrine Systems. Provided Unix systems administration services for the ServiceCenter product development organization as well as for the corporate IT organization. • Implemented and managed all corporate inbound/outbound mail relay systems including spam and AV filtering utilizing open source software - Red Hat Enterprise Linux, Postfix, Spamassassin, ClamAV, and Amavisd-new. • Implemented and managed corporate tape backup and archiving solution for 175+ servers, three NAS devices, MS-SQL databases, and MS-Exchange servers with over 15 terabytes of total data. Backup environment included IBM Tivoli Storage Manager backup and archiving software, Sun Solaris 9/V440 hardware, IBM 3584 tape library, and a seven LTO-2 tape drives configured in a local fiber-switched SAN. • Managed VMware ESX server environment supporting a total of approximately 150 Windows Server and Linux virtual machines. • Implemented and managed corporate DNS (Bind), monitoring using Nagios, performance trending with MRTG, and centralized logging (Syslog-ng). • Responsible for building and maintaining Unix development infrastructure for engineering and development, QA, and technical support departments. Supported a range of Unix platforms including Solaris, Red Hat and Suse Linux, HP-UX, and AIX as well as a standard toolkit of GNU development tools and utilities across operating systems. • Supported hardware including IBM BladeCenter blade server hardware – HS20, HS40, and JS20s (PowerPC), Sun V240 and V440s as well as a variety of older Ultrasparc hardware, HP 9000 and Itanium servers, and older IBM RS6000 (models F50 and 43P) hardware. Network Appliance F840 with ~4TB of data. • Perl scripting for user management, log file analysis and reporting as necessary.

Manager of IT staff of up to twenty engineers that contributed significantly to the development of AT&T Managed Enterprise Hosting capabilities in the areas of network engineering, Unix and Microsoft systems engineering, database clustering, and security. Provided technical leadership, strategic planning, performance and project management, and managing budgets exceeding three million dollars annually.Led the development and delivery of several key revenue generating capabilities for AT&T’s Managed Enterprise Hosting portfolio of services including the following:• Hardware and vendor certification for HP Proliant, Dell, and Sun platforms.• Local server load balancing (SLB) and global server load balancing (GSLB) network capabilities.• SQL 2000 and Oracle standard database clustering capabilities for Windows and Solaris platforms.• Advanced application firewall, anti-virus, auditing, and policy compliance capabilities for AT&T Managed Security Services.• Successful SAS-70 audit of AT&T hosting data centers, hosting networks, and hosting operations services and processes.Lowered IT costs and improved provisioning and service delivery metrics for AT&T Enterprise Hosting by designing and implementing several IT automation technologies across fifteen domestic AT&T datacenter locations:• ‘Reference system’ platforms for Microsoft Windows, Redhat Linux, and Sun Solaris across Enterprise Hosting service continuums reduced the amount of time spent configuring, securing, and optimizing common platforms and maintained a higher level of consistency and quality across all managed servers.• Rapid provisioning and configuration management platforms for Windows 2000, Solaris, Linux hosting platforms based on Sun Jumpstart, Redhat Kickstart, and imaging technologies across all domestic AT&T IDCs resulted in faster hosting provisioning timeframes and increased overall operational quality and efficiency.

Performed a variety of general Unix systems administration engineering and support tasks focused on AT&T managed dedicated and shared web hosting applications - Apache, Bind, FTP, Sendmail, and Oracle and SQL 7/2000 databases as well as a range of custom and commercial application server products. • Engineered a multi-platform network backup solution for AT&T managed hosting environment consisting of a dedicated Fast Ethernet/Gigabit tape backup network, Veritas NetBackup software, Sun E450 Solaris tape backup servers, and a StorageTek 9740 Timberwolf tape library with a capacity of storing up to 30 terabytes of data. • Lead support engineer for CMP Media’s managed hosting datacenter environment of approximately fifty Solaris systems consisting of UltraSPARC-2 Apache web servers, DNS, and management systems; clustered E4500 Oracle database servers with direct-attached (FCAL) EMC Symmetrix storage and Network Appliance F630 and F740 network attached storage systems (NFS), and Alteon local server load balancing devices. • Designed and implemented SMTP, DNS, and NTP infrastructure across twelve AT&T datacenters.

• Maintained variety of internal IT/network systems including NFS/CIFS file servers, Apache web and intranet servers, Sendmail SMTP servers, Bind DNS servers, and Raptor firewall and VPN services.• Managed and automated heterogeneous database middleware development environment consisting of open source development tools (make, gcc, perl, etc), source code revision control system (CVS), and Oracle, Sybase, Informix, and SQL Server databases running on AIX, Solaris, HP-UX, and Windows NT build and test platforms.• Advised development staff on system-level decisions and technologies.

• Implemented and maintained a shared hosting infrastructure for small ISP consisting of DNS, SMTP, Usenet, Web, mailing list (Majordomo), and network tape back up services primarily running Sun OS 4, Solaris, and BSD platforms. • Supported internal Solaris and BSD software development environment and performed a variety of internal IT tasks.

• Managed the daily publishing of electronic federal and legal content to subscriber-base utilizing Web, gopher, ftp, and SMTP technologies. • Maintained all IT infrastructure assets including Novell fileservers, SunOS internet servers, and network hubs, switches, printers, and modems.

• Regional sales representative for Unix X-Windows System development products. Managed accounts, educated and advised clients on technology and tools, made purchasing recommendations, gave presentations, and devised solutions for Fortune 500, Wall Street, and government firms and agencies. Consistently made or exceeded sales quota.