Shawn Pickrell
Senior System Administrator at Criterion Systems- Claim this Profile
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Topline Score
Bio
Tim Broutin
Shawn is a skillful systems administrator that leveraged his perl/shell scripting abilities to maximise task completion with minimal system downtime. His Oracle (Sun) Solaris abilities are excellent and he was very useful in a wide range of systems engineering roles.
LinkedIn User
Shawn is both a talented UNIX System Administrator and Perl scripter. He has as vast knowledge of Solaris platforms, including SUN hardware, software installation, and system monitoring. I have had the privilege of working with Shawn.
Tim Broutin
Shawn is a skillful systems administrator that leveraged his perl/shell scripting abilities to maximise task completion with minimal system downtime. His Oracle (Sun) Solaris abilities are excellent and he was very useful in a wide range of systems engineering roles.
LinkedIn User
Shawn is both a talented UNIX System Administrator and Perl scripter. He has as vast knowledge of Solaris platforms, including SUN hardware, software installation, and system monitoring. I have had the privilege of working with Shawn.
Tim Broutin
Shawn is a skillful systems administrator that leveraged his perl/shell scripting abilities to maximise task completion with minimal system downtime. His Oracle (Sun) Solaris abilities are excellent and he was very useful in a wide range of systems engineering roles.
LinkedIn User
Shawn is both a talented UNIX System Administrator and Perl scripter. He has as vast knowledge of Solaris platforms, including SUN hardware, software installation, and system monitoring. I have had the privilege of working with Shawn.
Tim Broutin
Shawn is a skillful systems administrator that leveraged his perl/shell scripting abilities to maximise task completion with minimal system downtime. His Oracle (Sun) Solaris abilities are excellent and he was very useful in a wide range of systems engineering roles.
LinkedIn User
Shawn is both a talented UNIX System Administrator and Perl scripter. He has as vast knowledge of Solaris platforms, including SUN hardware, software installation, and system monitoring. I have had the privilege of working with Shawn.
Credentials
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Red Hat Certified System Administrator (RHCSA)
Red HatJun, 2021- Nov, 2024 -
CompTIA Security+
CompTIAAug, 2011- Nov, 2024 -
Red Hat Certified Engineer
Red HatAug, 2013- Nov, 2024
Experience
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Criterion Systems
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United States
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IT Services and IT Consulting
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200 - 300 Employee
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Senior System Administrator
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Aug 2022 - Present
I help administer web applications for a USDA hosted website. I am responsible for application upgrades and working with the operating system administrators as needed to coordinate outages. I help administer web applications for a USDA hosted website. I am responsible for application upgrades and working with the operating system administrators as needed to coordinate outages.
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Axient
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United States
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Defense and Space Manufacturing
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700 & Above Employee
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Senior Information Technology Analyst
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Sep 2019 - Aug 2022
* Developed custom RHEL 7.7 images, including STIG hardening and post-install scripts * Created system to update RHEL 6, 7, and 8 repos and copy them to isolated network * Created Perl/Expect utility to run commands as root and mass-change passwords on STIG-hardened system * Upgraded over 100 RHEL/Centos 6 hosts to RHEL/Centos 7 * Independently managed Linux, VMware, and backup systems * Developed custom RHEL 7.7 images, including STIG hardening and post-install scripts * Created system to update RHEL 6, 7, and 8 repos and copy them to isolated network * Created Perl/Expect utility to run commands as root and mass-change passwords on STIG-hardened system * Upgraded over 100 RHEL/Centos 6 hosts to RHEL/Centos 7 * Independently managed Linux, VMware, and backup systems
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General Dynamics Information Technology
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IT Services and IT Consulting
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700 & Above Employee
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System Administrator Advisor
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Mar 2017 - Sep 2019
+ Federal Aviation Administration Security Operations Center (SOC) * Served as technical lead for a team of 10 engineers responsible for managing cyber security infrastructure (including Linux, Windows, VMware, VMware VDI, Sourcefire, NetWitness Packets, ArcSight SIEM, and Jira) * Served as interim manager between Nov. 2018 and Mar. 2019 * Developed PHP/Bash web utilities to self-service Linux passwords and to create temporary accounts on SFTP servers * Planned – from start to finish – a full upgrade of the cybersecurity research lab hardware, including Linux, VMware, and pfSense firewalls * Developed automated method of building Red Hat Enterprise Linux 7 servers and hardening them to STIG standards * Upgraded over 50 RHEL 5 hosts to RHEL 7 and began upgrade of Windows workstations from Win 7 to Win 10 * Directly managed Linux, FreeBSD, Windows, Active Directory, VMware, VMware VDI, Jira, and Nagios Show less
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Leidos
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United States
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IT Services and IT Consulting
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700 & Above Employee
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Linux System Engineer
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Jul 2015 - Mar 2017
+ Cyber Security Administrator, US Navy Carderock Prototype Development Facility, February 2016-present * Created custom image for Developed process for installing Centos 7 on new system builds, adapting existing hardening and configuration scripts for Centos 6 systems for Centos 7 * Independently managed over 100 Linux servers and workstations (classified and unclassified) + Linux Operating System Engineer, US Navy Carderock Prototype Development Facility, July 2015-February 2016 * Independently performed CentOS server installations using Cobbler provisioning tool in a multi-server environment * Upgraded developer environment from CentOS 5 to CentOS 6, making configuration changes to Cobbler Show less
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SRA, a CSRA company
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United States
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Information Technology & Services
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700 & Above Employee
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System Administrator
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Oct 2010 - Jul 2015
+ Senior Cyber Security Engineer, Federal Aviation Administration, CSMC, December 2014-July 2015 * Independently managed over 70 Sourcefire security sensors, applying database and system patches * Regularly applied custom signatures to Sourcefire sensors, including debugging signatures as necessary * Continued independent management of Linux, FreeBSD, VMware ESXi, and Windows systems + Senior Solaris System Administrator, Department of Defense (US Army), Integrated Support Modules, January 2014-December 2014 * Independently managed over 40 Linux and Solaris 10 servers, including Solaris zones + Linux System Administrator, Federal Aviation Administration, Cyber Security Management Center (CSMC), October 2010-December 2013 * Won two quarterly awards for my willingness and ability to work outside my specialty and assist other departments * Administered VMWare ESXi servers, overseeing an upgrade from ESXi 3.5 to ESXi 5.1. * Administered Sourcefire security sensors, applying database and system updates. * Installed and configured Nagios system monitoring, writing custom scripts for ESXi servers. * Independently managed Linux and FreeBSD servers * Assisted with Windows domain administration, including user and DNS management and DOS shell scripting. Show less
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Bloomberg BNA
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United States
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Information Services
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700 & Above Employee
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System Administrator
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Oct 2000 - Sep 2010
* Wrote Perl utility to automate management of Solaris servers (two years before Ansible) * Wrote Perl utility LunarWinds to monitor hosts under Sarbanes-Oxley scope * Designed and implemented backup subnets to increase backup speed and reliability. * Wrote Perl utility to provide a single report of backup success and failure * Managed Solaris servers and backups during a corporate headquarters move * Independently managed over 100 Solaris servers * Managed enterprise backups composed of 200+ clients (including NetApp filers) and 15 terabytes of data Show less
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System Engineer
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Aug 2000 - Sep 2000
+ DISA Readiness Applications project, August 2000-October 2000. * Performed bug fixes on code in a C/UNIX environment and performed DII compliance testing. + DISA Readiness Applications project, August 2000-October 2000. * Performed bug fixes on code in a C/UNIX environment and performed DII compliance testing.
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KPN
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Netherlands
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Telecommunications
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700 & Above Employee
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Programmer/Analyst
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Dec 1998 - Aug 2000
+ Defense Information Services Agency (DISA) Defense Information Systems Network (DISN), August 1999-August 2000 * Wrote Perl utility to pull data updates from disparate telecom systems and update the NetExpert database * Managed NetExpert, learning the rule language to handle incoming data and manipulating the user-facing graphical interface. * Managed Remedy ARS trouble ticketing to support DISN fault management engineers + DISA Integrated Network Management System (INMS) project, December 1998-August 1999 * Created Excel macros and formulas to processed and verified data that was input into DISA-wide NetExpert installations. Show less
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Randolph-Macon Academy
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United States
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Primary and Secondary Education
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100 - 200 Employee
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Teacher
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Sep 1997 - May 1998
I taught three sections of world history and two sections of journalism. In addition, I coached the academic team and sponsored the yearbook. I taught three sections of world history and two sections of journalism. In addition, I coached the academic team and sponsored the yearbook.
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Education
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1993 - 1997
Randolph-Macon College
B.S., Mathematics, History
Community
