John Greenfelder Email & Phone Number
Unix Systems @ TNC
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John Greenfelder Location
- Centreville, VA, US
John Greenfelder Work
- Unix Systems @ (March 2022 - Present)
- System Administrator @ (August 2020 - November 2021)
- Systems Administration Manager @ (January 2018 - August 2020)
- Senior Cloud Engineer @ (May 2016 - December 2017)
- Senior Infrastructure Administrator @ (January 2011 - December 2017)
- Unix Engineer 3 @ (July 2006 - January 2011)
- Senior Systems Administrator @ (February 2003 - June 2006)
- Systems Administrator @ (September 2002 - February 2003)
- Trainer and Consultant @ (January 2000 - January 2001)
- Systems Administrator @ (January 2000 - January 2001)
- Systems and Network Administrator @ Taos Mountain Consulting (January 2000 - June 2000)
- Systems Administrator @ (January 1996 - January 1999)
- System Administrator @ (January 1995 - January 1996)
John Greenfelder Education
- East Central University 1991-1995
John Greenfelder Summary
- John Greenfelder, based in Centreville, VA, US, is currently a Unix Systems at TNC. John Greenfelder brings experience from previous roles at Godaddy Registry, Neustar, Inc., Charter and Time Warner Cable. John Greenfelder holds a 1991 - 1995 East Central University. John Greenfelder has 2 emails and 1 mobile phone numbers on RocketReach.
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John Greenfelder
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