Gregg Berkholtz's résumé

The most current, and recent, edition of my résumé is always available on this page.

Contact Info

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References & Recommendations


Some letters are available via my LinkedIn Profile 1), others are available by request.


“…a highly qualified system administrator with a great deal of experience managing complex server infrastructures…received high marks from several of our clients…“
- Brian Jamison, CEO, OpenSourcery LLC (2009)

”…a highly-dependable systems administrator with a profound sense of ethics and community. He has that rare mix found in few systems administrators of being both a super geek - and a human, approachable co-worker.”
- Sean Larkin, Project Manager, OpenSourcery LLC (2009)

”…Gregg has been excellent to work with. His implementations have been solution based and always with efficiency in mind, both in terms of project completion and long term use…projects have always been completed in a timely manner…Gregg has been a great problem solver and has helped us to invent many out of the box solutions to many difficult projects…“
- Evan Geer, Technologies Administrator, Portland Oregon-based Charter School (2009)

”…We have had opportunity to engage Gregg Berkholtz on numerous occasions and continue to utilize his skill set to manage the Linux components of out network environment. Gregg has always been polite, professional and exceptionally conscientious in his work. He has earned the complete trust of the staff at NIS I would not hesitate to use him for projects involving the highest levels of security and confidentiality. His “can do” attitude and prompt response have earned him a permanent place on our roster of qualified professional…“
- Glenn Sexton, President & CEO, Northwest Information Services (2009)

“…a skilled technical professional to whom I give the strongest recommendation…”
- Miles Hochstein, Product Architect at Omnimedix Institute (2008)

”…was able to bring his substantial technical knowledge to bear on deciding on programs for group members…“
- Ed Sawicki, President, Accelerated Learning Center (2008)

”…one of the most talented individuals I have ever had the chance to work with. Gregg’s work ethic, depth and breadth of knowledge and skills, as well as his ability to see any task beyond its boundaries are absolutely amazing…“
”…I had the pleasure of working with Gregg in my first post-College job. After working with Gregg for a number of years, I can definitely say he has influenced me more than any college class ever could. Gregg’s Linux administration, network engineering, system design, documentation, and adherence to industry/technological standards are second to none. You can be sure that if Gregg is working on a project, it will be completed correctly, properly, and with the highest level of reliability. Gregg is an amazing resource to have in any business environment. I cannot recommend Gregg enough!“
- Bill Hill, System Administrator, The Yoshida Group (2007)

”…detail oriented…early adopter and supporter of Linux and helped us provide open source solutions that saved the company quite a bit of money, while still delivering expected services…“
”…to his credit, we never had any service outages due to viruses, trojan horses, worms or DOS attacks…”
- Boyd Campbell, Senior Manager, The Yoshida Group (2007)

“…he was consistently professional and extremely knowledgeable in his field. Our interactions gave me the opportunity to witness his skills as a very efficient problem solver and dependable information technology administrator…“
Matt Crouch, Supervisor of Global Services, OIA Global Logistics (2007)

”…His ability to adapt and learn makes him seem like he is never stuck on a problem…“
- Grant Koeneke, Sr. DBA/Architect, Banfield Pet Hospitals (2006)


Background Summary

An experienced network and systems engineer with exposures spanning across both public and private sectors.

Professional portfolio includes Google, Microsoft, Adobe, Nike, Sony, NWEA, The Yoshida Group, OIA, Northwest Information Services, RenTrak, and various Pacific Northwest city, tribal, and county government agencies.


  • Two decades supporting software development, hardware development, and business operations
  • Very experienced with networking, data storage, and fault-tolerant 24×7 services
  • Highly skilled in Linux servers and Open Source Software
  • Experienced with high performance compute server farms and job queuing systems
  • Proven management and team leadership skills, in environments with multiple responsibilities
  • Improving efficiency while reducing costs, by leveraging systems automation and business process development

Core Competencies

  • Infrastructure Assessments
  • Datacenter Design & Management
  • Systems Monitoring & Automation
  • Server & Service Virtualization
  • Performance Profiling
  • Managed Hosting
  • Technical Documentation

Career Goals

Continue to successfully introduce cultures embracing kaizen principals; continuous processes improvement. Which enables an organization to rapidly assimilate new technologies, strengthen inter-departmental communications, and further hone a competitive edge.

Past projects include enabling organizations to successfully:

  • Design, merge & migrate systems
  • Ensure service stability, and strengthen data security
  • Integrate VoIP, T1, and analog voice services
  • Collaboratively design and implement IT related business processes
  • Design, document and automate tools and processes supporting equipment inventory, identification, configuration, automated-build/deployment, monitoring, and business on-call goals.

Experience & Skills Details

4 Direct-report capacity of supervising junior-level employees
5 Use and administration of SUN 450's (employer) & UltraSPARC workstations (personal)
12 Auditing security of information systems; developing business policies and processes; managing linux workstations
14 SAGE “Senior Systems Administrator” skill level; key personnel managing multiple IS/IT systems within multiple organizations; providing 24/7 on-call technical support to Asia, Europe & US offices (not just emergencies); use and administration of WiFi-based LAN & MAN technologies
15 Managing T1, analog & VoIP/SIP/IAX2 telephony solutions (5 years with VoIP); domestic & international business travel
16 Engineering & managing virtual and cloud computing environments, including XEN, ZEN, OpenVZ and VMWare GSX, ESX, Server & Workstation
17 Systems design, construction, maintenance with workstation and network-level hardware & software; managing linux servers, routers & firewalls in production environments; ethernet & token-ring LAN, fiber-based MAN, T1 & DSL-based WANs
21 Use & administration of general PC (x86) & Apple Macintosh hardware. (up to forty-eight processor cores)
2-4 Linux Terminal Server Project (LTSP)
4-6 Zimbra, WebCalendar, Mozilla Calendar, Oracle RAC, WebLogic, Sybase, AoE NAS
6-8 puppet (centralized configuration management), native IPv6 routing, BGP for IPv4 & IPv6 dual-stacked networks, DDoS mitigation, MS-SQL, XEN and ZEN, Amazon EC2/AWS, SAS SAN, Mac OS X (10.3-10.9), wireless (WiMAX), Bugzilla, subversion, FiberChannel SAN2), SCO OpenServer 5, GroupWise, BorderManager, ZENWorks, MS Access, Progress, Informix
8-11 Apple iCal, NeoOffice, OpenVZ, Blade servers3), Telephony (VoIP, SIP/IAX2, Asterisk), Wiki (Twiki, MoinMoin, DokuWiki), NetWare 3.x-5.x, Solaris 8-10 (Intel & Sparc), Zimbra, OpenLDAP, Novell's NDS/eDirectory, Office 97 & 2000
11-15 Linux (Ubuntu), Linux (Debian, RedHat, SUSE & Slackware), MAC OS 7 & 8.5, Windows 2000/XP, djbdns, BIND, Apache, IIS, Snort IDS, logcheck, tripwire, OpenSSH,, AntiVirus (TrendMicro, Mcafee, Inoculan), Nessus, nmap, Backup (rsync, Veritas, NovaStor), Exim, Sendmail, Cyrus IMAP/POP3, MySQL, PostgreSQL, XMPP/Jabber, SSL, S/MIME, PGP, Squid Proxy, Ethereal, VMWare, wireless (WiFi), Nagios, Smokeping, MRTG/SNMP, RequestTracker, mailing lists (MailMan & home-grown), Samba/SMB, IP QoS, IPv4 routing (RIP, BGP, OSPF); mesh, PtP & star topology VPNs (IPSec GRE/IKE & BorderManager), IPv6 Tunneling, MySQL, PostgreSQL, LAN & WAN IPX & IP tunneling (IPSec & IPX-tunnel), NetWare/NCP, DOS 6.22/7, Windows 3.11/95/NT4, WaveLAN in switched & routed networks, ISDN, ARCServe, Adtran, & 3Com equipment, Tadiran Coral 1 & 3 PBX
15+ LAN, MAN, WAN environments. DHCP (ISC, Cisco, Novell), NAT, IP firewalling, perl, Unix shell (BASH, sh, ksh), awk, sed, PHP, C, C++, SQL, HTML, JavaScript, Linux (Debian & Slackware), wired & wireless ethernet, T1, Frame Relay (PtP & PtMP), DSL (consumer), Cisco & HP networking equipment, data-center rack-mount environments

Employment History


Portland, OR. January 1995 to Present

Specializing in systems automation, virtualization, documentation, integration, training and design.

TOCICI's Client Portfolio

  1. All previous W2 employers: Parkrose, Yoshida, Omnimedix & Opensourcery.
  2. Local IT & Telecommunications consulting firms (some since July 2000).
  3. Various non-profit organizations ranging from 75 to over 500 employees
  4. International clients include hundreds of small businesses and individuals.
  5. Local small businesses: tax and accounting professionals, medical clinics, attorneys, judges/mediators, construction & remodeling contractors, creative design firms, publishing houses, real-estate agents, homeowners associations, retail stores.


Spanning hundreds of physical and virtualized TOCICI owned and managed assets. Providing hosting, monitoring & management of:

  1. Authoritative DNS & registrar services.
  2. Equipment colocation and management.
  3. Email, website, VoIP, VPN, and virtual private server (VPS) hosting:
  4. Comprehensive systems monitoring:
  5. On-call/remote-hands systems administration services:

Major Strengths

  1. Develops departmental cultures conducive to automated systems management.
  2. Presents solid business cases justifying systems automation objectives as worthwhile and beneficial.
  3. Establishes actionable project requirements, and maintains scope.
  4. Inherent aptitude for quickly assessing, documenting and supporting complex environments.
  5. Strong communications skills within software engineering, systems engineering, and business operations teams.
  6. Interprets technical project requirements into human-approachable needs assessments.
  7. Actively integrates documentation, automation, version control, release management and agile workflow methodologies.

Systems Administrator, OpenSourcery LLC

Portland, OR. Sept 2008 to June 2009

SAGE Level, Senior. Managed internal and customer-owned infrastructure that serviced all organizational IT support needs, and a very diverse customer-base. Systems included firewalls, routers, switches, servers, desktops, and supporting services spread across 11 Linux systems (8 internal, 3 customer-owned), 2 Windows and 3 Asterisk phone systems under a business-hours availability plan. Primary accomplishments included:

  • Built & secured thin-terminal (LTSP) systems for K-12 (high school) and private-business environments, with between 20-60 active users.
  • Built and managed Asterisk VoIP PBX systems that combined Analog/POTS, T1 and SIP/IAX2 circuits, including multiple successful migrations to 100% VoIP.
  • Zimbra Collaboration Suite, including migrations and upgrades.
  • Webserver and database engines including Apache, MySQL and PostgreSQL.
  • Serviced and repaired embedded & custom-engineered equipment (commercial diesel fuel pumps, and public database search terminals).
  • Brokered communications between management, software development, and systems administration teams, through development and implementation of sharply-improved documentation and communication processes, with a strong influence from ITIL.
  • Began standardizing and documenting naming schemes, equipment labeling, system configurations and builds, and systems monitoring procedures.
  • Initiated and began refining on-call processes and procedures.
  • Established software & hardware inventory processes.

My OpenSourcery biography.

Systems & Technology Administrator, Omnimedix Institute & Rasputin Holdings LLC

Portland, OR. Oct 2006 to Sept 2008

SAGE Level, Senior. Responsible for all organizational IT support needs; management of entire infrastructure (firewalls, routers, switches, servers, desktops, & their services). Responsible for over 30 production servers (80% in colocation) under a 24/7/365 99.9% availability plan: 23 Linux, 5 Windows, 2 Mac OS 10.5 & an Asterisk phone system. Primary accomplishments include:

  • Designed two, 50-node, hot/hot datacenters to meet 99.999% service availability needs.
  • Significantly improved personal skills with Mac OS X, though daily management of OS X desktops and servers
  • Designed, implemented, & managed a multi-tiered enterprise-level backup
  • Established & implemented standardized naming schemes, system configurations, & software/hardware inventories
  • Implemented 125 phone number Asterisk PBX, using both PRI and VoIP/SIP trunking (with both soft & hard VoIP phones)
  • Processed over 200GB of data, through manual and automated means, to meet organization's legal/eDiscovery obligations

Senior Systems Administrator & Information Security Specialist, Yoshida Group

Portland, OR. June 1999 to Sept 2006

SAGE Level: Senior, since October of 2001: Responsible for over 70 production servers (95% were in colocation or remote offices): 4 SCO, 54 Linux, 10 NetWare, 1 Solaris, 3 Windows servers, & 2 Tadiran phone systems, across 4 international, and 9 domestic (4 metro) offices, which were supported 24/7 under a 99.9% availability plan. Primary accomplishments included:

  • Developed, audited & implemented IT security policies
  • Key team member during four mergers & acquisitions between January 2002 to September 2006
  • Provided 24/7 infrastructure-level support for all offices, & 3rd-tier support for Windows NT4/2000/XP users
  • Mentored & supervised one junior-level systems administrator (training, salary, performance reviews, etc.) from Nov 2003 to Sept 2006
  • Managed overall systems documentation, performance, & resource allocation of all LAN & WAN infrastructure (firewalls, routers, switches, servers and their services), DNS & email services for 32 domains (hostmaster & postmaster roles).
  • Migrated company from GroupWise to Cyrus IMAP, from private T1s to a mesh VPN, & from NetWare to Samba/SMB file servers. Designed & implemented anti-spam system, system-wide centralized backup, & ZENWorks environment.

SAGE Level: Intermediate, June 1999 to October 2001: Team administration (the Senior System Administrator and myself) of systems in 7 domestic (2 metro) and 2 international offices: 3 SCO, 3 Linux, 1 Solaris, 17 NetWare servers, a GroupWise system & a Tadiran phone system. As the sole backup to the senior systems administrator, I often shadowed his duties, and was also primarily responsible for:

  • Established & implemented software/hardware inventories
  • DNS & email services for 12 domains, webmastering 5 websites
  • Developed & implemented a standardized desktop environment using ZENWorks
  • Workday helpdesk support for Windows NT4/2000/XP in a NetWare environment, 24/7 on-call 3rd -tier support

District Computer/PBX Technician, Parkrose School District

Portland, OR. February 1996 to June 1999

SAGE Level: Junior, September 1997 to June 1999. Primarily responsible for development & maintenance of NetWare 4.11 network for the school district, while providing computer support & repair for approximately 300 workstations that serviced just above 2,000 users (students, classified and certified/teaching staff).

  • Repaired & upgraded software & hardware.
  • Developed complete NAL/ZENWorks implementation.
  • Managed information services interns from June 1997 onwards.
  • Trained certified and classified school district staff on use of applications & computing technologies.
  • Webmaster & district database go-to person.
  • Assisted in management of Tadiran Coral 1 & Coral 3 phone systems.

SAGE Level: Novice, prior to August 1997. Primary responsibilities were limited to supporting only the High School's NetWare 4.11 network for staff & students, (approximately 1500 users & 200 workstations) & developing what we later deployed as a district-wide Novell NAL/ZENWorks implementation.

Exhibit Technician, Oregon Museum of Science & Industry (OMSI)

Portland, OR. June 1992 to June 1996

Silly people would break exhibits, I'd fix them (with a smile). Scope of work included wielding a soldering iron and small-parts tools, while leveraging low-level diagnostic equipment such as multimeters, frequency generators, sound processors, and oscilloscopes.

Community & Professional Affiliations

Lecturer/Teacher, Portland & Mount Hood Community Colleges (PCC & MHCC)

Portland, OR. November 1999 to current

Lectured, by invitation, as an industry professional in networking technologies classes (approximately fourteen sessions). Primarily discussing WAN technologies, networking protocols, job hunting techniques, information security, system virtualization (cloud-computing), operating systems, and system administrator's general duties.

Presenter, ITEC Convention

Portland, OR. 1999 & 2004

  • 2004: Systems monitoring; using Nagios & Smokeping to improve services
  • 1999: VMWare technology; getting Linux & Windows to co-exist


1999 - 2008

  • President & board member, 2000-2004
  • Occasional presenter

BizNix (

1999 - 2008

  • Founding member
  • Occasional presenter


2004 - present

  • SAGE is a USENIX special interest group for systems administrators.

Education and Certifications

  • August 2000 Cisco CCNA, July 2001
  • Certified NetWare Administrator (CNA) 4.x, April 1997

City University, Vancouver WA

2005-2006 Studied: 110 credit hours4) completed towards Bachelor of Science in Computer Systems Networking & Telecommunications

  • Withdrew to focus on career, and development of speciality skills.

Mount Hood Community College, Gresham OR

1997-2005 Studied: Associate of Arts in Computer Applications Specialist Program

  • Transferred credit hours into City University.

Clark County Vocational Skills Center, Vancouver WA


  • Certificate of Completion: Electro-Digital Technologies, two year program
  • Hewlett Packard Total Quality Commissioning (TQC) training.

Personal Interests & Hobbies

  • Group & Solo Randonneuring (long distance cycling) Within Oregon & Washington (since November 2007)
  • Argentine Tango Dancing (2-10 hours/week) Within three states and seven countries (since July 2003)
  • Mechanical & Electrical Engineering (since 1990), personal shop equipment includes metalworking CNC, lathe, MIG & plasma, 3D printer, etc.
  • Rental property owner & manager since 2005, number of owned/managed units varies from two (2) to eight (8), dependent upon ongoing market trends.
  • Homeowner since 2002.
2) 4Gb & 8Gb
3) IBM BladeCenter H and E chassis
4) includes credit hours transferred from Mount Hood Community College
resume.txt · Last modified: 2016/06/23 13:56 by gregg
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