I am an experienced enterprise Windows, Linux, and UNIX systems administrator across many types of hardware and software. With a solid background in installation, configuration, virtualization, troubleshooting, cyber security, disaster recovery planning and implementation, network configuration, and documentation, I always try to leverage my skill-set to enhance a company’s IT operational efficiency.
Progressive Casualty Insurance Corporation
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It Systems EngineerProgressive Casualty Insurance CorporationColorado Springs, Co, Us
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Systems Engineer IiiEl Paso County, Colorado, Usa Jan 2022 - Aug 2022Colorado Springs, Colorado, United StatesRedhat, Office 365 Exchange, VMware, Windows, ActiveDirectory, and NetBackup administration; installation,configuration, backup and troubleshooting of hundreds ofservers for El Paso County, Colorado.Red Hat Enterprise Linux (RHEL) 8,7,6 server administration Microsoft Office 365 Exchange administrationVMware vSphere administration and deploymentsWindows 2016, 2012R2, 2008 server administrationNetBackup 8.0 administrationAnsible Playbook, NetApp ONTAP, BASH and PowerShell Scripting -
Eng Iii Spec - Systems AdministratorVerizon May 2019 - Dec 2021Colorado Springs, Colorado AreaRedhat, Windows and Solaris server administrator; installation, configuration, backup, andtroubleshooting across several large enterprise data center environments.• Responsible for 450+ Red Hat Enterprise Linux (RHEL) 8,7,6 server administration• Responsible for 180+ Windows 2016, 2012R2, 2008 server administration• VMware vSphere v6.7 administration and deployment• Primary NetBackup administrator for the Colorado Springs NEC location• Managed 101 Dell 2U R740 and R640 data center servers locally.• VMware vCenter, vRealize, CyberArk (PAM), DNS, IPV4, IPV6• SSH, yum, Ansible Playbook automation, SFTP• Primary POC for all Colorado Springs maintenance and break-fix within our team. -
Systems Administrator Ii / Linux Desktop EngineerKeysight Technologies Apr 2014 - May 2018Colorado Springs, Colorado AreaI was primary IT support for a large team of electrical engineers and scientists. • Redhat server and desktop installation, configuration, backup, and troubleshooting.• SUDO, ssh, LVM, and CFEngine work environment.• Virtual Machine administration and deployment.• DAS, NAS, SAS RAID configuration, deployment.• RSnapshot (rsync) disaster recovery implementation.• NoMachine, VNC, Cisco VPN deployment and troubleshooting.• DNS, NFS, NIS client and server administration and troubleshooting.• Shell scripting to automate desktop and server administration tasks. -
Systems Administrator IiiExelis (Now Harris) Jan 2005 - Mar 2013Colorado Springs, Colorado AreaManaged a classified server room comprised of Windows 2008R2 servers and Redhat 5.x/6.x workstations. Information System Security Officer (ISSO) for managed area.Responsible for all unclassified VMWare ESX SAN architecture, Windows 2003/2008R2 Server administration. Windows XP, RHEL Linux 4 and 5 WS, IBM AIX, Debian client support, and PBX phone telephony support.Livestate and Backup Exec disaster recovery, systems configuration, installation, patch management via WSUS, and troubleshooting of all servers. Cisco / Dell networking configuration, troubleshooting, and administration.
Daniel Callaghan Education Details
Frequently Asked Questions about Daniel Callaghan
What company does Daniel Callaghan work for?
Daniel Callaghan works for Progressive Casualty Insurance Corporation
What is Daniel Callaghan's role at the current company?
Daniel Callaghan's current role is IT Systems Engineer.
What schools did Daniel Callaghan attend?
Daniel Callaghan attended Colorado Christian University.
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Daniel Callaghan
Information Technology Specialist 1 At California Department Of Motor VehiclesSacramento, Ca2wwex.com, dmv.ca.gov3 +177046XXXXX
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2sbcglobal.net, callaghanpaving.com
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Daniel Callaghan
Broomfield, Co3raytheon.com, ballaerospace.com, yorkspacesystems.com2 +191979XXXXX
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