Daniel Keisling

Experience

• 

  Stenocall

  Jan 1999 - May 2001

  Systems Analyst

  Maintained networked environment of two Novell servers, multiple Linux servers, and 200 client computers.Installed and maintained multiple DNS, FTP, web, proxy, firewall, and secure servers.Provided computer technical support and services for employees.Wrote and maintained over 40 programs for internal use. Provided integration for programs across multiple operating systems such as Windows, Linux, and OS/2.Responsible for all hardware and software upgrades to keep technologies current.Installed telephony and networking cable, networking devices, and server hardware. Show less

• 

  PPD

  Oct 2001 - now

  Installed, configured, and maintained over 180 HP-UX and Linux servers in multiple countries. Developed methodologies to increase server performance under Oracle RAC, Apache, and file server systems.Provided creation, configuration, and maintenance for Netscape Directory Server (LDAP) and Active Directory.Responsible for supporting 1700+ users with e-mail support and account issues in multiple cities. Provided maintenance for DNS service for offices in 20+ countries. Responsible for tape backup and recovery for multiple UNIX systems. Responsible for top tier support of helpdesk issues that affect email, UNIX, and LDAP systems.Provided configuration, support, and maintenance for multiple, large Storage Area Networks (HP EVA. NetApp) Show less

  • Principal Systems Architect

    Apr 2020 - now

  • Systems Admin Architect

    Apr 2016 - Apr 2020

  • Principal Systems Admin

    Oct 2011 - Apr 2016

  • Senior Systems Administrator II

    Mar 2010 - Oct 2011

  • Senior Systems Administrator

    Jun 2007 - Mar 2010

  • Systems Administrator

    Oct 2001 - Jun 2007