Christopher Purcell Email & Phone Number

Melville, Ny

• Responsible for application deployment, capacity planning, system design, planning and implementation, hardware, operating system support, patching, system security and system compliance, network and application level troubleshooting, scripting, automation, system-level performance monitoring/tuning.• Provided system administration support for the Global MSST Unix Server support team which consisted of a mix of 20,000+ Red Hat Enterprise Linux, Solaris, and AIX servers• Linux Subject Matter Expert (SME) for all groups across North America & Europe• Wrote code in perl & python to automate tasks, perform security audits, and roll out changes across the server farm en masse• Provided operating system support on Red Hat Enteprise Linux 3-8x and Solaris 8/10 servers• Worked with the application teams to support and maintain their custom software• Performed automated operating system rollouts using Kickstart and Jumpstart• Supported and managed HP Proliant, Dell PowerEdge, and Sun servers• Implemented a disaster recovery strategy for each of the business units that we support• Wrote automation to handle the failovers during disaster recovery (COB) tests• Built and supported VCS clusters (ie, Veritas / Infoscale suite)• Automated much of the work required to remediate the findings in the various audit reports• Worked on the virtualization project to cut costs by migrating physical servers into virtual machines using the VMware platform• Supported the high performance computing grid which consisted of 2000+ Red Hat Enterprise Linux servers running Platform Symphony• Wrote python code using the Ansible Tower RESTful APIs to manage Ansible tasks

Islandia, Ny

• Primarily worked with the following operating systems on a daily basis: Red Hat Enterprise Linux 2x/3x/4x, SuSE Linux Enterprise Server 8x/9x, Sun Solaris 5-10, and IBM AIX 5L• Supported the following hardware: IBM pSeries servers, Dell PowerEdge servers, Sun SPARC servers, and Sun Intel/AMD servers• Worked as a team with others on company-wide projects and rollouts• Resolved Unix-related user issues and requests across a wide range of Unix platforms• Performed unattended installations of all Unix operating systems: RHEL/SLES/Solaris/AIX• Installed and configured LPARs for the IBM pSeries servers running AIX 5.3• Wrote various Perl scripts to automate tasks• Configured and supported various networking services and applications such as: Apache, ProFTPd, ncFTPd, Samba, NFS, Postfix, Sendmail, SSH, BIND, QIP, etc.• Thorough knowledge of logical volume managers including Linux LVM, Solstice Disk Suite / Sun Volume Manager, and AIX LVM• Supported and installed CA products on Unix & Linux servers• Beta-tested CA products for the development team• Wrote security documentation and security policies, server build documentation, application specific documentation, and other procedural documents• Developed a system to deploy security fixes and/or package installations/upgrades remotely• Implemented a new ERP solution utilizing SAP on AIX pSeries servers• Locked down all of our Unix servers in terms of security• Mentored other systems administrators

Hauppague, Ny

• Set up a two-node active-passive cluster running Red Hat Enterprise Linux AS 3.0 using the Red Hat Cluster Suite software for the companies ERP implementation• Performed an Active Directory migration from an NT4 domain that included five domain controllers across three sites.• Wrote automation in perl that handled onboarding all aspects of creating new users on the Linux servers and Active Directory as well as customizing their profiles based on their location• Set up a Citrix NFuse server running on Red Hat Linux to connect to our Citrix MetaFrame XP servers running the Citrix SSL Relay service.• Installed and administered a daily backup routine and disaster recovery strategy that utilized Computer Associates ARCserve 2000 and Veritas Backup Exec 9.x.• Performed an Exchange 5.5 to Exchange 2000 migration.• Set up Linux failover clusters using the open source utility DRBD.• Wrote various Perl and CGI scripts to help automate tasks (both Linux and Windows)• Performed an upgrade of Microsoft Proxy Server 2.0 to ISA Server 2000.• Installed Samba servers running on Red Hat Linux 7/9 that authenticated users from AD.• Set up a frame relay network connecting our 25 remote offices to the CO. Configured Cisco 1700 Series routers for each of our remote offices and a 3640 as the core router.• Set up a Cisco VPN solution for users that need to work from home. This included the Cisco VPN Concentrator 3015 using the Cisco Secure VPN Clients.• Secured Linux servers with LIDS, Tripwire, iptables, TCP Wrappers, etc.• Installed and configured Apache 2.x web servers and ProFTPd/vsftpd FTP servers on Linux.• Performed a Citrix MetaFrame 1.8 to Metaframe XPa migration that included three load balanced servers in each farm.• Set up a DMZ for our web servers using a Cisco PIX 515.• Installed and configured Cisco ACS Server utilizing the RADIUS and TACACS+ protocols for central authentication and authorization of various network devices.

Largo, Fl

• Accepted a promotion from Toymax Inc. (as a Network Administrator, 8/2000 – 12/2000), who was the parent company of Monogram at the time• In charge of the IT department, which includes all voice & data communications• Built a network from scratch that consisted of Windows 2000, NetWare 5.1, and Red Hat Linux 7x servers• Installed and administered a daily backup routine and disaster recovery strategy that utilized Veritas’s Backup Exec 8.x• Managed a team in the installation and upgrading of Windows NT to 2000 and NetWare 3.12 to 5.1 servers at the company’s parent office.• Designed both our NY and FL offices NDS trees and file system structures to prepare for a future merge• Performed an Active Directory migration from an NT4 domain• Performed two Exchange 5.5 upgrades to Exchange 2000• Administered the Exchange 2000 server daily• Performed a NetWare 4.11 to 5.1 upgrade• Installed and configured a Red Hat Linux 7.1 FTP server running ProFTPD and Samba at the NY office• Installed and configured Red Hat Linux 7.x servers running BIND, DHCP, Samba, ProFTPD, and Apache 2.x and 1.x for our FL office• Maintained multiple websites on the Apache web server installed on a Red Hat Linux box• Administered our Cisco PIX 506 firewall• Installed and supported a customized financial package for the Accounting department called SBT 5.0 on a NetWare 5.1 server• Provided technical support for Windows XP/98/NT/2000 workstations• Installed and configured Active Directory, DNS, WINS, DHCP and Terminal Services on Windows 2000 Servers

Plainview, Ny

- Supported Microsoft Windows NT4 and Novell NetWare servers- Microsoft Exchange Server- Provided onsite technical support (ie, help desk) for 100+ users