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Built out data center infrastructure to move from a monolithic instance
to a distributed fault-tolerant highly-available environment to provide
a foundation for agressive growth.
Administration and 24/7 support of 45+ Linux servers (Centos/Debian)
comprising Qik's web presence and streaming video environment.
Web App
Ruby on Rails, Apache+SSL, HAProxy, Mongrels, Memchached, and MySQL.
HA
Heartbeat, Ldirectord, LVS, and Monit.
Security
SELinux, Iptables.
Monitoring
Munin, Nagios, and Cacti.
Virtualization
VMWare Server and Fusion.
Focused on the administration and 24/7 support of all componenents of an
enterprise open source phone system (600+ users, 2 locations) comprised of:
Debian, Ubuntu, and Centos Linux servers - extensive use of virtualized
servers using Xen. Debian package creation and backporting.
Installation and configuration of Sangoma T1 and analog circuit cards.
Coordinated with multiple telcos in the provisioning of T1 (36+) and DS3
circuits, and US and international toll-free numbers.
Asterisk installation, configuration, and dialplan programming. Asterisk
Gateway Interface programming and test suite scripting in Bash, Perl, Ruby
and Adhearsion. Nagios and Cacti scripts written to provide detailed
monitoring of Asterisk specific attributes.
Provided Operations Staff with open source and in-house developed web
applications to access CDR records, queue statistics, call recordings, and
predictive and mass dialers. Backend technologies included: Apache, Tomcat,
Ruby on Rails, lighttpd, FastCGI, MySQL, PostgreSQL, and SQLite, NAS with
CIFS.
Conducted a Proof of Concept project on using OpenSER as a SIP registrar
and VOIP call load balancer.
Administration of Trustix, CentOS, and Fedora servers providing the
following services for on-line retailers. Virtualized servers and
workstations with Xen and Parallels.
Apache HTTP - IPVS load balancing, MySQL, Asterisk, OpenLDAP, Postfix/Courier,
XMMP, CUPS, NFS, FTP, DNS.
Awstats, Summary, Nagios, Cacti, phpMyAdmin, Sigman, QueueMetrics,
phpLDAPadmin,Squirrelmail, Roundcube, TWiki, vBulletin, phpBB, jabber2d,
Wildfire XMMP Server, PHP Live! Chat Server, Open Office, Subversion.
Desktop and phone support for 60+ users.
Linux thin-clients(90%), Mac(9%), Windows(1%).
Deployment, configuration and support of Asterisk PBX for 40 CSR call center.
Hard and Soft SIP phones, plus analog phones connected to VOIP gateways.
Repair, install, and maintain Sun Microsystems servers, disk arrays, and
workstations at a large financial sector data center (200+ servers).
Manage a million dollar inventory of on-site spare parts.
Provide proactive services such as data center walk-throughs, asset
management, and research on newly available hardware and software.
System and network installation, administration and support.
Linux servers providing web applications implemented with Apache,
MySQL, and PHP.
Windows 2000 servers providing file and print sharing; DB2 databases,
and IIS webservers.
Implementation of RAID arrays, backup systems and filesystem recovery.
Installation of routers, firewalls, and ethernet/telephony cabling.
On-site and phone support of servers, networks and desktops.
Deployed iPlanet web servers, IIS web servers, WebSphere application servers,
Oracle Database servers, NetGenesis web traffic analysis servers and
NetBackup backup servers for the E-Commerce Solutions group on a wide range of
Sun (U10, E220, E420, E450) and NT/2000 servers.
Solaris 7 and 8 installation, configuration, security lock down, application
and client installation, recommended patches, Veritas Volume Manager,
Tripwire, SSH, LDAP, NetBackup and required e-commerce applications.
Peripheral installation and configuration Quad FastEthernet, Differential
SCSI, video cards, CPUs, memory, StorEdge D100 disk array, StorEdge L20 tape
libraries and nCipher Hardware Security Modules.
Racked, networked, and provided remote management access for servers at
corporate and external data centers including a high-security data vault.
Installed racks, various KVM and terminal server units - Raritan, Lightwave
Communications and Cybex, and rack-mounted keyboard/video/mouse solutions,
implemented DNS and F5 Big-IP load balancing changes.
24/7 on-call server support (rotational) - including on-line banking
services utilizing Jaguar Component Transaction Server integrated with
IBM MQ series.
Administered nine Sun Solaris 5.7 Servers (U10, E450, E3500, E4500) providing
HTTP, HTTPS, FTP, NFS, DNS, enterprise-wide backup, CheckPoint firewall,
Oracle database, Java application services.
Performed server, operating system and software installations - including
Solstice Disk Suite, upgrades, backups ,performance tuning and terminal
server connectivity. Monitored servers and network with MRTG, Big Brother,
HP Top Tools and CA Sniffer.
Transferred a production Oracle database to a new server/Network Appliance
filer combination.
Administered Windows NT and Novell file servers. Re-implemented a
Novell/Arcserve/DLT Library combination - installed Samba on Solaris
as a temporary backup solution.
Expanded in-house network with trunked HP Procurve switches. Monitored
Internet connectivity - diagnosed issues and escalated response.
Supported developers and support staff with technical expertise, UNIX shell
and Perl scripting, and SQL programming.
Consulted clients in various network and server related situations including
the installation and support of NT servers, implementation of file backup and
mail gateway solutions, the expansion of Ethernet and serial terminal-based
UNIX networks and network traffic analysis using CA Sniffer Pro.
Administered in-house Solaris systems providing email gateway and SSL
authentication services and a BSD based Sidewinder firewall.
Provided desktop support on all end-user applications and hardware -
specializing in editorial applications in the Windows 95/ NT and Macintosh
environments. Troubleshot network connectivity, printing, dial-up access and
email delivery problems.
Primary technician for Macintosh hardware, applications, system software,
peripherals, networking, file and printer sharing, and user support.
Performed assorted system administration tasks: user administration, printer
configuration, shared directories, cross-platform file translation/recovery.
Prepared Linux servers, which operated as large-scale terminal servers
encapsulating NovaNET data in TCP for delivery over customer networks.
Preparation included installation and testing of peripherals: high-speed
serial cards, network interface cards, and modems; installation and
fine-tuning the Linux operating system; verifying the functionality of the
combined hardware and software.
Provided technical support to installation technicians on all aspects of the
NovaNET network installation process. Acted as a liaison between the
technical services and engineering groups on complex customer installations.
Evaluated, tested, and recommended incoming network and communications
equipment prior to field implementation.
Documented equipment installation procedures, testing procedures, and
cabling and installation standards. Designed a documentation style guide
for the Technical Services Group.
Installed and resolved problems with T1 and 56K Digital Data Service
circuits and related equipment - Channel Banks, DSUs and TDMs.
Installed terminal servers, serial multiplexors, rack-mounted modems,
network cabling, and custom serial port connectors.
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