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Roger Constantin

Roger Constantin

Systems Administrator

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location of Roger ConstantinHerndon, Virginia, United States

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  • Timeline

  • About me

    IT Technologist Linux/'NIX Systems - Walter Reed Army Institute of Research -LongView Int'l Technology Solutions

  • Education

    • Cairo American College

      -

    • Cairo American College

      -

    • GMU

      -

  • Experience

    • AT&T

      Jan 1989 - Jan 1999
      Systems Administrator

    • Oracle

      Feb 2001 - Apr 2002
      Unix Systems Engineer

    • XO Communications

      Mar 2004 - Feb 2006
      Sr. Unix Systems Engineer

    • Booz Allen Hamilton

      Jan 2005 - Jan 2007
      Manager of Unix Systems Team

    • SRA International

      Apr 2006 - May 2008
      Sr. Unix Systems Engineer

    • Unisys Corporation

      Feb 2007 - Nov 2010
      Sr. Unix Systems Engineer

    • Computer Sciences Corporation

      Nov 2010 - Jun 2015
      Manager Unix Systems

      Managed team of 12 Unix System Administrators in the Enterprise Management Operations Center with CSC in support of the ITIP TSA contract under DHS. Managed servers in multiple offsite datacenters in Oracle, Solaris and Linux environments.

    • Federal Trade Commission

      Aug 2015 - Jul 2016
      Sr. Solaris/Linux Systems Engineer

      Solaris, RHEL, solaris zones/containers, Redhat virtualization RHEV and oracle XEN hypervisors, oracle VM Manager&Server, DNSSEC(chroot) administration, Ironport IMR, Tripwire, Listserve, PGP Servers, Build/Configure/Maintain, M4000, Blade 6340, 6240, 6000, 5140, x86-x24. netapp storage SAN & iscsi, zoning, configuration and implementation. Solaris LDOMs. OSSV netapp backups, Veritas Volume Manager, Veritas File System, Solaris Volume manger, ufs, vxfs, zfs. Linux Logical Volume Manager. Patching & POAM vulnerability remediation in RedHat and Solaris core and virtualized environments. Show less

    • FedTec

      Sept 2017 - now
      IT Technologist Linux/Unix Systems - Walter Reed Army Institute of Research

      Support Linux HPC Cluster running RedHat/CentOS on R820/830 hardware. Multiple head and compute nodes running Torque PBS scheduler. Ansible playbooks configuration and automation in Linux environments. Kerbified Centrify AD Integration to provide Single Sign On capabilities in the Linux environments. VMware VM deployment on multiple platforms. NetApp Cluster provisioning.Support Research/Analysts at WRAIR using Linux OS on various hardware platforms. Manage and Monitor systems using Check_MK. Provide/Update systems with remote and local repos to remediate and mitigate IA findings. Show less

  • Licenses & Certifications

    • CompTIA Security +

      CompTIA
      Aug 2017

    • Linux + Powered by LPI

      CompTIA
      Sept 2017