John Greenfelder is a highly qualified professional, working in Neustar, Inc main office of which is in 41. as a Systems Administration Manager from 2018. John Greenfelder has earned professional experience in more than 11 positions at different companies. John Greenfelder went to the East Central University and was studying there from 1991 to 1995. Statesville, North Carolina is the area, where this professional was known to be living. The professional's email address and number are easily accessed through SoftwareOfficial on demand.
Name variants:
Johnn Greenfelder,
Jon Greenfelder,
Jack Greenfelder,
Jackie Greenfelder,
Jacky Greenfelder,
Johnny Greenfelder
Last updated May 26, 2024
Contact Information
Workplace
Systems Administration Manager
Sterling, VA
Industry
Information Technology and Services, Database Information Retrieval Services
Colleagues
Work History
Systems Administration Manager
21575 Ridgetop Cir, Sterling, VA 20166
System and application administration for registry service.
from Jan 2018
Senior Cloud Engineer
Vmware, infrastructure and private cloud engineering.
May 2016 — Dec 2017
Senior Infrastructure Administrator
400 Atlantic St, Stamford, CT 06901
Unix & Linux applications,SAN configurations, ESXi virtulized vms and hypervisors.
Jan 2011 — Dec 2017
Unix Engineer 3
1000 Lowes Blvd, Mooresville, NC 28117
Unix Engineering on AIX and Linux systems. 1700 locations with more than 100,000 managed hosts. operated in the 3rd level support for production issues, mentored new team members, implemente...
Jul 2006 — Jan 2011
Senior Systems Administrator
770 Broadway, New York, NY 10003
unix systems admin for the personal finance section.
Feb 2003 — Jun 2006
Trainer and Consultant
training and software consultant for lifeline software product, systems penetration testing.
2000 — 2001
Systems Administrator
systems administration on Solaris and linux, deployment of new gear to replace outsourced co-lo gear.
2000 — 2001
Systems Administrator
Solaris and AIX administration, backups, system planning, troubleshooting and working with dev groups to deploy new solutions.
1996 — 1999
System Administrator
dev systems administration and deployment on AIX, solaris and linux.
1995 — 1996
Education
1991 — 1995
1991 — 1995
Occupations
Executive
Chief Administrative Officer
IT Professional
Information Technology Specialist
Engineer
Chief Executive
IT Specialist
Skills
Unix
Linux
Solaris
Operating Systems
Aix
Disaster Recovery
Perl
Unix Shell Scripting
Networking
Security
San
System Administration
Storage
Vmware Esx
Servers
Virtualization
Shell Scripting
Vmware
Data Center
Nagios
Hp Ux
Red Hat Linux
System Deployment
Xen
Opennms
System Monitoring
High Availability
Technical Support
Apache
Windows Server
Network Administration
Linux System Administration
Tcp/Ip
Scripting
Storage Area Network
Cisco Technologies
Storage Area Networks
Firewalls
Troubleshooting
Computer Hardware
Infrastructure
Cloud Computing
Vpn
Ibm Aix
Netapp
Systems Monitoring
Software Installation
Integration