Erik A. Espinoza

OBJECTIVE
To obtain a systems administrator position where my tech skills and leadership can be utilized to full capacity.

EXPERIENCE HIGHLIGHTS
* OS & Application Stack Tuning (Kernel, Java, Apache, Tomcat, PHP)
* High Availability Clusters
* High Performance Computing
* Eucalyptus Private Cloud
* Strong DNS and Mail knowledge
* Network Architecture
* Documented procedures and applications

TECHNOLOGY EXPERIENCE
OS: Linux (RHEL & Ubuntu), OpenSolaris/Solaris 10
NET: Cisco IOS, OpenVPN, PPTP, IPSec, DHCP, DNS, PXE
MISC: VoIP (SIP on Asterisk), SMTP, POP3/IMAPv4

PROFESSIONAL EXPERIENCE
2007 - Present eBay/Shopping.com
Title: Systems Administrator
* Migrated Front-Ends with no downtime to new OS and stack
* Migrated 30 Back-End apps from NY to PHX within 48 hr staleness window
* Built first native OS packaged release (rpm based)
* Migrated DNS live with zero interruptions (New servers, new IP, new design)
* Wrote documentation to keep projects in sync with reality
* Designed mass deployment system that was used to deploy 1,000 servers in 2 days, continues to be used to redeploy
* Manage capacity for frontend services

2003 - 2007 California Institute of Technology
PROJECT: LIGO (http://www.ligo.caltech.edu/)
Title: Technical Lead
* Built and administered 350 node Condor cluster
* Coordinated with systems administrators at 3 off-site locations to ensure Caltech consistency (MIT, Livingston Observatory, Hanford Observatory)
* Managed an Einstein@Home data mirror
* Wrote documentation on internal wiki servers
* Reworked Fedora Core 4 Installer in order to add support for hardware
PROJECT: JPL/SDSIO (http://www.jpl.nasa.gov/)
Title: Systems Administrator
* Architected live to site automation and administered servers for Mars Rovers project
* Rebuilt RHEL before CentOS was released for internal use, subsequently migrated systems to CentOS
* Created HA web infrastructure for various sites (Cassini, Deep Impact,)
* Built and administered 200 node cluster for TES (Tropospheric Emissions Spectrometer, Aura Spacecraft)
* Wrote monitors for temperature monitoring in ganglia
* Created user, system and network policies

2004 - 2006 ForceNetworks, LLC
Title: CIO/Systems Administrator
* Designed network architectures
* Built Layer-7 Firewalls based on IPTables
* Configured Windows 2003 Active Directory controllers
* Deployed VoIP solution based on Asterisk
* Various VPN deployments (OpenVPN, IPSec, Cisco VPN?s)
* Deployed various Qmail servers for clients

1999 - 2002 San Francisco Unified School District
Title: Systems Administrator
* Coordinated and managed technology training program
* Managed 1500 workstations deployed across 6 sites
* Managed 2 student technicians per site
* Trained teachers to use computers effectively
* Created standard images for the entire district