SUMMARY

• Senior Systems Engineer with extensive experience designing, testing and supporting next - generation enterprise solutions in today’s environments.
• Proficient in an assortment of technologies, including Bind DNS, Anycast, VMware, Apache Web Server, MySQL and many flavors of Linux. SA skills include:
• DNS/IPAM Administration Performance Tuning & Capacity Monitoring
• Data Security, Backup & Recovery
• Standby/Failover Administration Web Hosting
• Migration specialist Master troubleshooter ITIL / Scrum

PROFESSIONAL EXPERIENCE

Confidential, Orange County, CA

DNS Consultant

Responsibilities:

• Assessed the DNS infrastructure, created Visio diagrams of the internal and external design & DNS query flows.
• Wrote run books and documented the DNS infrastructure.
• Wrote How-To Guides to use Infoblox.
• Propose a design for the new DNS infrastructure of its existing data centers.
• Implemented the new design, which involved dual ESXi servers with a primary & secondary Linux VM behind F5 load balancers for internal DNS queries.
• Parse spreadsheets for missing hostnames, then bulk load into Infoblox.
• Cross reference zone data across multiple DNS servers to load into Infoblox, for one central source for the zone data.
• Resolve broken forward and reverse delegation across several service lines to connect the internal domain hierarchy.
• Resolve a broken delegation domain to migrate from UltraDNS to another infrastructure.
• Implemented Nagios for health monitoring of all DNS servers and RNC stats.
• Migration of external DNS servers from ISC BIND servers into Infoblox, then slave them back down to the ISC BIND servers.
• Wrote PHP applications to troubleshoot DNS latency issues.
• Accessed external DNS hosted by 3rd party and put a plan together to diversify external DNS services across multiple providers with an internal central management of domains.
• Migration of Dynamic DNS service of 3k modems that provide traffic details across the freeways in America without interruption to services.
• Migration of external services between UltraDNS & DYN for diversity, with internal control by Infoblox.

Confidential, Santa Ana, CA

Senior Systems Administrator

Responsibilities:

• Wrote run books and documentation of the DNS infrastructure, process and standards for First American.
• Architected the enterprise DNS infrastructure utilizing multiple DNS views with zero downtime, under budget and on time.
• Worked with Corporate Network Security to ensure security compliance of infrastructure.
• Configured all Proteus and Adonis appliances per role type defined.
• Imported the Protues database provided by CoreLogic, reconfigured all deployment roles to our infrastructure, defined domain forwarding to AD servers when required.
• Split up the migration of the external and internal views due to how massive the migration was worldwide.
• Post DNS cleanup has consisted of removing all RFC1918 IP’s from the external view; remove deployments of rDNS of RFC1918 ip’s to the external view; reconfigured rDNS deployments roles so that we are not authoritative for the whole /8 blocks.
• Manage the change management lifecycle of DNS processes and requests.

Confidential, Irvine, CA

Senior Linux Systems Engineer

Responsibilities:

• I managed 6 authoritative DNS servers and 12 caching servers in 3 data centers across the country that accounts for 80K domains. Administrate a staging server that logs the zone changes from users and does sanity checks before they get deployed to the authoritative servers. 8 of the 12 caching servers I have configured in a load balanced situation that can handle a large spike of the DNS traffic.
• Written many scripts to automate by tasks, one being able to re-write rDNS records from XO when we purchased the Irvine data center from them, this allowed us to assume ownership from ARIN, also any RFC2317 configurations for classless delegation to clients name servers.
• Was transferred to Irvine, CA to make the transaction of the purchase of the data center from XO smooth. During the process I implemented our companies procedures that I helped developed.
• Deployed over 100 ESX servers that include HA and VMotion utilizing kickstart.
• Built a complete Linux kickstart system that utilizes a web interface to create a custom ks configuration depending on the order, that is completely secured and configured in a 20 minute install time that is consistent; this would usually take 4 hours to complete manually.
• Moved 300+ servers from The Boston Data Center to VeriCenter over a 3 day period in Boston, MA.
• After Solaris migration to Louisville, I fine-tuned and improved the performance of each server, added virus & spam protection for incoming mail on all servers.
• Configured an 8 server load balanced smart host setup to relay mail for the Solaris server for outgoing mail; this helped the servers from getting black listed.
• Responsible for Tier 3 support; last resort to our clients.
• Managed and built with a team a new shared product line for our shared hosting department HalfPriceHosting.com that at the time generated $117k over a 1 ½ year period utilizing 2 servers.
• Worked closely with Spamhaus.org and provided free SBL/XBL server hosting in two of our datacenters.
• Migrated older legacy Linux servers from previous acquisitions to newer server builds.
• Managed all Cacti, TACACS, NeDi, kickstart, remote backup, and jump servers for all datacenters.

Confidential, Los Angeles, CA

Systems Administrator

Responsibilities:

• Designed and implemented the colo infrastructure web hosting environment utilizing FreeBSD & Linux.
• Worked with clients in migrating their web sites to our servers, from pointing there domain to our name servers, web site content synced and database ported over.
• Managed hundreds of domain names with cilents.
• Configured and managed several VoiceXML servers, mail servers utilizing sendmail, MySQL databases on Redhat Linux.
• Managed multiple primary and various slave name servers, running bind.
• Analyze growth of servers and capacity planning.

Confidential, Fort Wayne, IN

Systems Administrator

Responsibilities:

• Construction and installation of servers running SCO products.
• Configuration and maintenance of servers and all clients.
• Support UNIX platform in networked environment related to LAN/WAN connectivity.
• Integration of MS clients utilizing VisionFS.
• Build and maintain Linux firewalls to ensure data and systems security.
• Support creation and maintenance of all UNIX user accounts.
• Monitor utilization of CPU, memory, and disk resources of all customers.
• Maintain and ensure optimal system, data backup, and recovery strategies.
• Troubleshoot and resolve all systems issues.