29 Corniche Bellevue | Nice, France | 06000 | 04 89 03 94 44 | dave@sfcomputerguy

 

David Wilson

Objective

A challenging position as a Unix Systems Administrator

Experience

2005 to 2010 Adteractive, Inc San Francisco, CA
Senior Network Administrator

  • Assisted in roll out of cfengine as primary management interface for servers in collocation facility.
  • Configured and managed a storage area network with redundant brocade switches, EMC Clariion CX700, Celerra network attached storage device, and connected hosts utilizing PowerPath, multi-path IO.
  • As part of a large team of Administrators and Network Engineers, I coordinated a highly available web server farm with a peak throughput of more that 70Mb/s.
  • Assisted in the buildout of a new cage doubling the available rack space and saving more than $1,000/month in power, rent and expenses.
  • Manage a trouble ticket queue, providing support to a community of more than 150 users.
  • Successfully instituted Border Gateway Protocol and HSRP for system failover on Cisco 4948 switches.
  • Day-to-day administration of a 200 node site utilizing RedHat enterprise Linux version 4 and 5, Suse Enterprise Linux version 9, djbdns and assorted patches, several mail relays running postfix with failover managed by netscaler 9000 load balancers, and juniper netscreen firewalls.
  • My duties include migrating stage DNS from tinydns to bind 9 on XEN 3.0.3 with centos 4.4 guests.

2005 to 2005 Openwave Corporation, Redwood City, CA
Network Administrator

  • As part of a large team of Administrators and Network Engineers, I helped manage more than 2,500 servers in a diverse environment.
  • As a member of the DNS consolidation committee, I prepared the phone.com and software.com zones for sale. This entailed consolidating more than 5,000 records in each zone and analyzing thousands of machines for residual dependencies.
  • As a lead tech in the server consolidation program, I eliminated more than 500 redundant server systems, saving the company tens of thousands of dollars per month.
  • Working in the new San Francisco Data Facility, I supervised and organized the build out of 330 racks, more than 10,000 cables, hundreds of electrical drops, and related issues.
  • Coordinated the installation and configuration of Cyclades console servers, remote reboot strips and KVM over IP units throughout the facility for out-of-band management

2002 to 2005 Fastmetrics San Francisco, CA
Senior Network Administrator and Network Engineer

  • Senior Administrator in charge of major network servicing 10,000 customers in 24x7 high availability environment.
  • Setup NIS/NFS infrastructure for consolidated logon system with significant integration to front end accounting package, and Network Appliance NAS back end.
  • Pioneered new outsourced dialup solution consolidating modem pools and saving >$2000/month. Created new RADIUS servers and migrated users without incident.
  • Designed new fail over system for T1's enabling a new product offering.
  • Designed and carried out Voice over IP network for transcontinental multi-office system.
  • Built Web server cluster utilizing LAMP and created automation scripts to simplify roll out of new web servers.
  • Successfully transitioned to a multi-homed BGP environment for the ISP.
  • Trained Jr. Systems Administrators in Cisco router configuration, UNIX user administration and miscellaneous administration duties.

2001 to 2002 Wilson Consulting San Francisco, CA
Network Administrator

  • Built out network for internet café and dialup ISP Running IIS web server and multiple outsourced dialup providers with pass-through radius server. Many sub tasks including the following:
  • Configured web surfing machines as secure kiosks
  • Configured secure radius server using OpenBSD and FreeRadius
  • Configured NTMail and Qmail for 500 users.
  • Instituted firewall using Solaris and IPF in PPPoE environment.

2000 to 2001 Taos Consulting at Navis, LLC Oakland CA
Unix Network Administrator

  • Created three servers to perform NIS, name service, and DHCP.
  • Installed LDAP server for internal directory and calendar server.
  • Assisted in complex ISP migration involving routing, firewalls, mail relay, and secure web server certificate.
  • Configured Tiara networks Multiplexer.
  • Setup three mail servers running Sendmail 8.10, 8.11.1 and 8.9.3 for internal mail relay.
  • Upgraded FreeBSD 2.8 to 4.2.
  • Configured NIS master running under AIX 4.31 and central log host running SunOS 4.1.
  • Created new secure proxy server for shell and FTP access running RedHat 6.2.
  • Managed trouble ticket queue.

2000 to 2001 Taos Consulting at The Man.Com San Francisco, CA
Unix Systems and Network Administrator

  • Provided 24/7 web site production support in 100 node environment.
  • Installed Mandrake 7.0, 7.1, Solaris 2.6, 7, 8 (x86/sparc), RedHat 6x, Qmail 1.03, Sendmail 8.9.3, dhcpd, Apache 1.3.12, Amanda, bind, NFS, Java servlet engines, Bluestone Saphire, Locomotive, Resin.
  • Instituted backup system using SpectraLogic TreeFrog tape robot w/Veritas Netbackup.
  • Developed VMware system running Linux to simulate production environment.
  • Configured and installed Sun E4500s and Cisco 3660 routers.
  • Gained hands on experience with BGP and HSRP for fail over and redundancy.
  • Implemented T1 channel bonding, and PPP Multilink.

1999-2000 First World Communications San Francisco, CA
Network Engineer

  • Responsible for dedicated customers involving installations and configuration of CPE, such as Cisco routers and CSU/DSU, inside wiring, and firewalls.
  • Installed T3 cables and circuit boards for Cisco 7513.
  • Managed modem pool supporting over 60,000 customers using Cisco AS5300/5200 and Portmaster 3s and 4s.
  • Configured ISDN, channelized T1s, PRIs, and NFAS.
  • Installed MRTG under FreeBSD to monitor 75 routers and dialup remote access servers.
  • Rolled out Portmaster 4s in 10 major cities, meeting a two week deadline.

1998-1999 Sirius Connections San Francisco, CA
DNS Administrator and NOC Support

  • Registered and maintained 5000 domains.
  • Modified zone files.
  • Provided mail and dial-up support.
  • Responsible for the administration of accounts (added users and modified passwords).
  • Performed trouble-shooting duties for DSL customers.

Education

Cisco CCNA certification

1996-2004 City College of San Francisco

  • Concentrated in Mechanical Engineering
  • Programming, Unix and networking
  • Cisco NetworkingAcademy CCNP course work

1985-1987 San Francisco State University

  • Concentrated in Applied Mathematics
  • Unix and programming courses