Updated January 14, 2015 1 of 2
Kristoffer David Knigga
1004 East Wilson Ave, Lombard, IL 60148 -- h. 630-613-9723 -- c. 765-357-4735 -- e. kris@knigga.com
Technical Exposure
Hardware: HP ProLiant, 9000, and Integrity servers; HP BladeSystem; IBM RS6000/System p/Power servers; Dell
servers and disk enclosures; white box/custom servers and workstations; Solarflare, Myricom, and Chelsio 10 Gbps
NICs; EMC CLARiiON CX and Symmetrix DMX and VMAX arrays; HP VA and EVA arrays; HP Nike and MSA
disk enclosures; HP, Quantum, and Sony tape libraries; Emulex and Qlogic FC HBAs; HP and Cisco managed
switches; Cisco routers and PIX firewalls; Cisco Fibre Channel switches; Cielo SkyLink CG/CGX radios and Mercury
Operating Systems: Red Hat Enterprise Linux (and clones) 3 - 7; Fedora 4 19; HP-UX 11.0, 11.11, 11.23, and 11.31;
AIX 5L and V6; Solaris 9 and 10; VMware ESX 4; Microsoft NT 4, 2000, XP, Server 2003, and Server 2008
Applications: PTPv2/IEEE 1588-2008; Puppet; Foreman; Solarflare OpenOnload; Red Hat Satellite/Spacewalk,
Kickstart, and Cluster Suite; HP Serviceguard, Integrity Virtual Machines, Ignite-UX, MirrorDisk-UX, DRD, SD-UX,
Data Protector, OpenView, and Systems Insight Manager; VERITAS Storage Foundation (VxVM and VxFS), Cluster
Server, NetBackup, and Backup Exec; Zabbix; EMC Powerpath, Solutions Enabler, Time Finder, NaviCLI, and
SnapView; Oracle Database 8, 9, 10, and 11; BigBrother; Commvault Galaxy; Intersystems Cache; Kerberos 5; LDAP;
DHCP; BIND; Sendmail; Apache; MySQL; Samba; NFS; Microsoft Exchange, IIS, SQL Server, and Active Directory;
BittWorks II Toolkit
Programming / Scripting: POSIX shell, awk, sed, python, PHP, SQL
Linux Administrator
Chopper Trading Chicago, IL June 2012 January 2015
Managed hundreds of Linux servers in a latency-sensitive high frequency trading environment across
dozens of geographic locations
Implemented Active Directory authentication on Linux machines using pure krb5 and ldap
Developed, tested, and implemented sub-millisecond time synchronization across geographically-
distant data centers
Revived long-neglected Puppet deployment and implemented numerous changes to improve stability
and functionality
Implemented iPXE and Syslinux/PXELINUX solution to improve remote hardware deployment
Tuned Linux for low application and network latency
Taught end-users and junior administrators “how to fish” when possible thereby reducing support
requests and escalations
UNIX Contractor
Confidential Chicago-area, IL May 2011 May 2012
Provided UNIX and storage consulting, administration, and engineering services on a contract basis.
Managed highly visible and critical projects, including liaising with key management stakeholders
Extended Red Hat Cluster Suite ipmilan fence agent to support IPMI privilege levels
Developed procedures for RHEL server build-out including custom scripting to provide automation
Wrote application to track backup tape usage to reduce backup failures due to overused media
Trained and mentored other administrators and operators on new technology and procedures
Designed and implemented strategies for downtimeless database backups
Designed highly available, load-balanced print cluster to manage 1000+ printers and serve dozens of
print clients running SAP
Systems Administrator
Fidelity National Information Services Chicago, IL December 2008 May 2011
Primary administrator in charge of UNIX servers for a Fortune Global 500 client. Secondary
administrator for a dozen other clients. Coordinated technology delivery teams to provide solutions
and support. Implemented technology and process improvements to improve administrator efficiency.
Updated January 14, 2015 2 of 2
Designed and implemented Spacewalk and Spacewalk Proxy infrastructure managing servers in
three geographical locations, including custom scripting to increase automation
Created and executed project plan for complex technology refresh involving hardware, OS, and
cluster upgrades exceeding client’s expectations for quality of work and downtime
Quickly learned and documented decade-old and largely undocumented BCV-based backup and
database refresh process greatly improving supportability and decreasing mean time to repair
Wrote cross-platform shell script to provide a simple and consistent menu system for user account
administration tasks in order to offload user administration to helpdesk
Go-to person for new client onboarding due to customer interaction skills and rapid learning ability
Systems Administrator
SallieMae Asset Performance Group Niles, IL June 2007 December 2008
Maintained HP-UX, Red Hat Enterprise Linux, and Windows servers in support of an application that
generated over $200 Million in annual revenue. Worked with diverse teams to deploy, tune, and
troubleshoot new and existing systems. Generated system documentation and defined SOPs.
Sole administrator in charge of day-to-day operations for up to 55 critical production UNIX servers
Worked with storage team and vendor to plan and execute migrations from EMC CLARiiON to
EMC Symmetrix DMX array resulting in 30% increase in performance for critical applications
Wrote scripts to manage array-based clone technology for backups of production environments
Planned and performed operating system upgrades of critical servers without downtime to business
Automated monitoring process to ensure health of DR data
Led a team in a massive network re-addressing project with 100% transparency to end users
Jones Business Integrations Ladoga, IN Jan. 2005 Sept. 2006
Co-owned web hosting and web application development company that catered mainly to small
Migrated network and servers from office back room to collocation center
Worked with customer to design custom content management system tailored to livestock breeders
Network Administrator
1up! Software Kokomo, IN May 2003 Aug. 2004
May 2005 Aug. 2005
Administered network equipment and servers for a company providing web presence solutions to small
publishing companies.
Migrated customer-facing servers from in-office server room to collocation center
Overhauled backup systems and strategies to cope with rapidly growing capacity demands
Wrote custom application to monitor for and alert on system errors
Certifications, Clearances, and Classes
HP BladeSystem Administration course January 2012
Veritas NetBackup 6.5 Fundamentals course November 2008
Red Hat Enterprise Clustering and Storage Management course October 2008
Red Hat Linux Networking and Security Administration course September 2008
IRS High Risk Public Trust security clearance October 2008
Microsoft Certified Systems Engineer May 2003, November 2007
Cisco Certified Network Associate April 2002
Purdue University West Lafayette, IN Aug. 2004 May 2007
Major: Psychology Degree: Bachelor of Arts
Vincennes University Vincennes, IN Aug. 2001 May 2003
Major: Computer Networking Technology Degree: Associate of Applied Science