Current at:

Jon Gefaell

(408) 666-7983

Charlottesville, VA


Summary of Qualifications

Expert in Unix Networking and Systems Administration with a long-term and comprehensive experience in the design, implementation, and administration of technical operations environments. I have extensive experience with highly available, mission-critical, public-facing sites. I am also proficient with secure practices, email, DNS, server provisioning, configuration management, monitoring, capacity planning, change control, business continuity, and other aspects of technical operations. I recently took a hiatus from my engineering career to create a small company focused on artistic creations. Running all aspects of a small company allowed me to grow personally and professionally while leveraging my engineering experience. Having achieved this, I am ready to return to the full-time engineering market.

Employment History

Principal - Operations, Customer Support, Training

Medical Data Networks L.L.C. (T1Pal) - Charlottesville, VA August 2021 - Current

T1Pal provides Software as a Service to the Diabetes community. We provide Nightscout and the iOS Loop app to a growing number of people who use insulin. I am solely responsible for all aspects of daily operations including customer support, training, mobile app release management, sales, marketing, and billing.


Notta Design L.L.C. - Charlottesville, VA 2018 - 2021

I started a very small company on a shoestring budget and formed a team to design and build a luxury custom electric torch ('Flashlight'). Essentially a sort of jewelry. I personally supervised and directed all aspects and was able to bring an innovative, very high-quality product to market. This required learning many new technologies and developing processes to design, machine, finish and assemble completed products.

Senior Unix Systems Administrator

Vindicia, Inc - Redwood City, CA Sept 2015 - Feb 2018

I joined Vindicia to create architecture for a new data center buildout and improve upon Vindicia's mission-critical PCI compliant technical operations environment

Improvements to the existing operational environments include:

Built an integrated proof of concept ("iPOC") lab to model effective, integrated solutions. The 'iPOC' environment includes:

Elements from the iPOC environment made their way into all operational environments:

Most significant achievement

Linux/Unix Escalations Engineer

Verizon/Terremark - Cary, NC March 2013 - Nov 2014

I provided senior level escalation support for Unix systems. This primarily included return to service activities that could not be resolved by prior support levels. I also handled a variety of escalations for related issues with DNS, network, storage & backup. A focus was placed on identifying and eliminating recurring issues as well as training and mentoring junior level support staff. This included working together to resolve issues as an alternative to escalation. The results were incident reduction, improved MTTR and improved 'first touch' resolution.

Return to service tasks consumed no more than 50% of work time, often considerably less. Other regular tasks included creating and maintaining standard operating procedure documentation, detailed change instructions and requests, detailed post incident root cause analysis. Provided Unix SME guidance and participatio in phone bridges during high impact/severity issues with executive visibility. Worked with account teams (Service Managers, Account Customer Engineers) directly facing customers to resolve problems and suggest and support migrations and upgrades.

Senior Systems Engineer

Phoenix 2.0 - San Francisco, CA. May 2012 - March 2013

I built out RHEL Kickstart, improved DNS, reviewed existing product deployment process and configuration management scheme. Provided support and improvements for these processes and other as needed. Also conducted technical interviews for Phoenix consultant candidates.

Technical Operations Manager

Adobe Echosign (Formerly Echosign, Inc) - Palo Alto, CA. March 2011 - May 2012

I built the Technical Operations team and structure from the ground up prior to the acquisition of "EchoSign" by Adobe. I lead an operations team consisting of 3 engineers and supervised ongoing work by an outside consultant DBA firm. My team supported and grew a technology stack with Java/Apache/AMQ/MySQL running across controlled Preview, Stage & Prod environments in two data centers.

Technical Operations Architect, Operations Manager

Panasonic Cloud Entertainment Company, Unit of Panasonic North America - Cupertino, CA. October 2010 - March 2011

Infrastructure Architect, Operations Manager

Philotic/Causes.COM - Berkeley, CA. March 2009 - October 2010

Senior Unix Systems Engineer

Yahoo! Inc. - Sunnyvale, CA. March 2007 - February 2009

Member of a small team of Systems Administrators responsible for Yahoo's global UNIX and DNS systems Administration for Yahoo! worldwide.

Global Infrastructure Operations (Consultant)

Network Appliance, Inc. - Sunnyvale, CA. March 2006 - March 2007

Reported to Senior Manager of Global Infrastructure

Senior UNIX and Network Systems Engineer (Datacenter Architect)

Netblue, Inc. - Mountain View, CA. May 2004 - January 2006

Sole systems engineer for rapidly growing internet advertising company

Senior Consulting Engineer

Apple Computer - Atlanta, GA. February 2002 - February 2003

Member of a team providing an overlay of Enterprise UNIX server expertise to Apple's Educational Sales Field Organization.

Senior Systems Engineer

Napster, Inc. - Redwood City, CA. January 2001 - January 2002

Senior member of Team responsible for design and operations of the server farm.

Staff Engineer

Sun Microsystems, Inc. - Mountain View, CA. February 2000 - December 2000

Converted from contract to regular position. Accepted responsibility as Staff Engineer for all aspects of partner software engineering for Solstice Backup (SBU) product including sustaining product support and new product development.

Contract Positions

Sun Microsystems, Inc. - Mountain View, CA. February 1996 - February 2000

Lead Engineer. Responsible for management of escalated customer support issues. Developed workarounds and product fixes for problems without existing resolutions. Managed Information necessary to coordinate Product development and Customer support efforts.

Senior Systems Engineer

Healtheon, Inc. - Palo Alto, CA. July 1996 - December 1996

Co-Founder & Chief Architect

Cornerstone Networks - Charlottesville, VA. July 1995 - December 1996

Co-Founded Internet Service Provider business.

Computer Systems Engineer

University of Virginia - Charlottesville, VA. January 1985 - November 1995

Responsible for data communications for Administrative Computing Services