12371 S. 1450 W. • RIVERTON, UT 84065
801-824-9904 • HTTP://WWW.DANWITT.COM • DAN@DANWITT.COM
DANIEL WITT
EXPERTISE
Results-oriented Senior level GNU/Linux Systems Administrator with 12 years of experience
and a Bachelors of Science in Computer Science from the University of Utah. Strong ability
to think creatively and leverage a wide variety of open source software. Skilled in software
development that increases work flow and automates processes for backup, recovery, fail-
over, and disaster recovery.
PROFESSIONAL EXPERIENCE
September 2009 – Present
HealthCare Insight / Verisk Health
Senior Systems Administrator
Team Lead, Infrastructure Architect, and Security Engineer. Built several high
performance production Oracle Real Application Clusters running Red Hat Enterprise
Linux for a 4.5TB database. Worked closely with enterprise Oracle database
administrators to optimize these systems for high performance and load. Implemented
two Oracle Exadata V2 systems and adapted them to HCI's unique environment.
Implemented redundant Citrix NetScaler load balancers. Replaced over 84U of servers
with 8U, using virtualization on Red Hat Linux hosts with KVM and QEMU. Proactive in
hardware purchasing / estimation of needs and fulfilling immediate requests. Planned and
successfully executed: VPN tunnels between multiple sites, off-site backup, the hardening
of multiple firewalls, intrusion detection systems, tiered storage, system-wide Samba file
servers integrated into Active Directory, disaster recovery, and data center migration
Developed backup scripts, monitoring programs, and a large group of miscellaneous
programs that employees and computer systems depend on daily
Instrumental in creating and implementing policy and procedure that ensured a
successful SAS 70 type II / SSAE 16 audit
September 2002 – Present
Self Employed
Systems Administrator
Implemented and maintained servers and networking equipment for several small to
medium sized companies. Single-handedly maintained more than 200 servers at one
time. Services include: Oracle systems tuning and optimizing, MySQL, VPN (OpenVPN,
Poptop), NetApp disk subsystems, Xen QEMU virtualization, Snort IDS/IPS, masquerading
and firewalling with iptables, custom routing, Apache web server, Jabber instant
messaging, Munin system monitoring, DNS, Squid web proxy, Samba file servers with
Active Directory integration, Amazon Elastic Compute Cloud (EC2, RDS, S3, and Route
53), Disaster Recovery, Backup Systems, and Business Continuity Planning
Cisco VLAN tagging, port mirroring, trunking, 802.3ad link aggregation, wireless
networking and routing
Software Development and shell scripting. Automated many processes including backup
and recovery, fail-over, and system setups. Versed in Object Oriented Programming,
Algorithms and Data Structures, Source Code Repositories, Agile Development Model,
Database Systems, Computer Organization, Team Software Engineering, Programming
Language Concepts, software 3D Rasterization, Java, Perl, and C#
May 2002 – September 2002
Howa Construction
Systems Administrator
Planned and implemented hardened Debian Linux iptables firewalls, VPN (CIPE, Poptop)
servers, DHCP, DNS, Spamassassin, and Samba servers. Upgraded and maintained
Windows 2000 servers with Active Directory and Exchange
July 2000 – May 2002
ICServ INC
Systems Administrator / Developer
Built and maintained many load balanced Red Hat Linux servers running Apache,
mod_perl, and MySQL. Implemented DNS, DHCP, and Samba servers
Automated backups, monitoring and DNS setup using Perl. Developed portions of the EZ-
NetTools with Perl
February 1999 – January 2000
Bill Good Marketing
Software Support / Troubleshooter
Gorilla Marketing Database. MS Word. Windows NT, 95/98, 2000
EDUCATION
2003 – 2007
University of Utah
Bachelor of Science, Computer Science
CERTIFICATIONS
2011
SANS Institute
GIAC Certified Incident Handler
2009 – Present
Government Clearance
Department of Justice Security Clearance
2003 – Present
HIPAA
Renewed Yearly