15414 HIGHWAY Y, EXCELSIOR SPRINGS, MO 64024
Twenty years of experience with UNIX, fifteen years of experience as an
administrator. Experience with Linux (Red Hat Enterprise Linux, CentOS, SuSE,
Linux Mint Debian Edition), UNIX (Solaris, HP-UX, IRIX), BSD (OpenBSD, FreeBSD).
Broad experience with providing network infrastructure services to UNIX and
Windows servers and clients (DNS, NIS, NTP, FTP, SSH). Twelve years of
experience with Nagios network monitoring system (started with Netsaint v0.0.4) ,
including custom plugin development and active in the support community.
Additionally, experience with Astaro, OpenBSD, and Fortigate firewalls, Cisco
switches and routers, Ascend (Lucent) access devices (MAX, TNT), Adtran CSU/DSU
devices, Network Appliance filers (7xx, 8xx, FAS250), SNMP environmental
monitors, Foundry networking gear (ServerIron and NetIron products) , basic
Windows server administration skills (2003 and 2008) .
Non-technical capabilities include excellent work ethic, good communication skills,
professionalism, and attention to detail.
Programming, Markup, and Scripting Languages
UNIX shell scripting (Bourne, csh), Perl
PHP, SQL, HTML
Network services: Apache, OpenSSH, OpenNTP/xntp, PostgreSQL, pf, qmail,
SpamAssassin, ClamAV, SquirrelMail, Samba, VMware ESX Server, Amanda,
rsnapshot, postfix, MySQL, Red Hat Satellite, Microsoft SCCM, Dovecot, Puppet
Network monitoring/utilities: Nagios, Cacti , Nessus, Snort, nmap, SolarWinds
Orion, SolarWinds Kiwi
Business: Microsoft Office (Word, Excel, Visio, Outlook), CA Advanced Help
Desk, Infra, Bugzilla
Linux Systems Administrator 2009-present
The HNTB Companies
Architected, built, and maintained firm-wide ERP systems for Payroll, AP, HR,
and Finance running on RHEL. Implemented configuration file control and
distribution using Puppet, and intrusion detection via logwatch rules and AIDE.
Architected, built, and maintained Nagios ins tallation for firm-wide infrastructure
and office server monitoring, including failover capability /state replication, out-
of-band notifications, and automated configuration generation. Assisted
customer groups in tuning their thresholds and notification t imeperiods.
Developed custom plugins and service checks to allow Nagios to monitor the
health of its entire system as well as Windows IIS site states, service startup
configurations, Windows shadow copies, WMI status, log file ages, Linux disk
queues, Linux kernel attributes, Linux file attributes/permissions, FLEXlm
Automated creation of Nagios service dependencies to minimize spurious alerts
on 5000+ services relying on remote agents.
Part of firm-wide Infrastructure team responsible for all c orporate infrastructure
assets (SAN/NAS/CAS, Exchange systems, backups, data replication, disaster
preparedness, remote office infrastructure, Windows client management, AD,
anti-virus, VMware virtualization clusters, financial systems. Worked closely wit h
both Infrastructure and Networking teams (responsible for firm -wide LAN and
WAN, including WAN optimization via Riverbed) to analyze and troubleshoot
Created and maintained various SCCM packages to automate NSClient++ agent
management, plugin installation and management, and upgrades.
Maintained Orion network monitoring system for Networking team, including
server and version migrations.
Maintained Kiwi syslog server for Networking team, including server and version
migrations, performance troubleshooting.
IT Manager/Customer Support Team Lead 2007-2009
CORE Cashless, Inc.
Designed, implemented, and maintained new mail server using open source
software for multiple domains, including mail transport agent, mail delivery
agent, integrated anti-virus and anti-spam systems, and split horizon DNS.
Implemented secure IMAP and SMTP authentication via TLS, as well as webmail
interface for internal and external access. Installed and maintained intrusion
detection system, and created complete documentation for system reproduction.
Designed, implemented, and maintained Nagios system to alert various groups
upon out-of-bounds conditions on corporate infrastructure systems, server room
environment, as well as international client network . Nagios system allowed
support team to become proactive to customer site issues and fix many problems
before they impacted clients. Wrote custom software to automate configuration
generation for new clients, as well as provide a web “dashboard” to view
customer system states.
Designed, implemented, and maintained new corporate firewall using the Astaro
firewall product, including packet filtering, NAT, and multiple client VPNs with
Redesigned and relocated server room, installing new cabling , UPS power
protection, and environmental monitoring devices .
Designed and implemented systems management interface to poll client sites for
software and operating system parameters, store resulting data capture in
PostgreSQL database, and manage that data via web interface.
Produced written documentation and served as team lead for customer support
department, providing client support for Linux servers at customer sites, Linux -
based point-of-sale systems, custom software system for retail and
entertainment clients, and multi-tiered network configurations.
2 of 3
Systems Infrastructure Analyst 2000-2007
UGS PLM Software, a Siemens Company
Provided UNIX support for Solaris, HP-UX, IRIX, AIX, Linux (SuSE and Red Hat),
and OpenBSD systems for development organi zation, including installation,
configuration, and troubleshooting.
Designed, implemented, and maintained global NTP network for development
Designed, implemented, and maintained multiple network monitoring systems
using open-source software to alert various groups upon out-of-bounds
conditions on critical systems.
Designed, implemented, and maintained several generations of server room
rebuilds and improvements, including HVAC planning assistance, power planning,
Reduced infrastructure downtime by replacing aging servers with up -to-date
hosts and appliances running open -source and commercial software.
Relocated and maintained high-availability web application using trusted server
systems and failover hardware, as well as load-balancing hardware (Foundry).
Maintained vendor relationships with hosting provider as well as database and
systems support teams.
Designed, implemented, and maintained DMZ systems providing DNS and FTP
services to untrusted clients.
Systems/Network Administrator – Network 1996-1999
Internet Direct Communications
Managed technical support staff for ISP operations, for dedicated (fractional
DS1, DS1, ISDN, and web hosting) customers as well as dial -up customers.
Provided UNIX support for Solaris, Linux, and BSD systems for infrastructure as
well as hosting services.
Developed documentation and procedures to reduce call times, increase
customer satisfaction, and streamline network operations.
Provided support services for ISP operatio ns, including dedicated customers,
dial-up customers, professional services consultants, and corporate hosting
Interfaced with telco (LEC and CLEC) and vendors to initiate trouble reports,
facilitate troubleshooting, and drive resolution.
Provided installation and support services for regional ISP, including design and
installation of new POPs, and maintenance of access equipment (Ascend/Lucent,
Livingston Portmaster, Xylogics).
Maintained network monitoring system for dedicated customers.
3 of 3