21912 155th st • Basehor KS 66007

Phone 913-215-3673 • E-mail David@DavidHorn.me

David Horn

Objective

To pursue challenging positions within the Information Technology field that offer the opportunity for continued learning and professional growth.

Professional Skills

Operating Systems: Windows (client and server). Most Unix based OS’s: Linux (familiar with most major distros), FreeBSD, OpenBSD, NetBSD, Solaris, HP-UX, AIX, MacOS,

Virtualization Platforms:  VMware, Citrix, Microsoft, Oracle, Amazon, IBM.

Software:  Microsoft Office (all), Mail Servers (Exchange, Sendmail, Q-Mail, etc.) Web Servers (IIS, Apache, Nginx with various extensions PHP, Perl, ColdFusion, FrontPage, etc.).  Databases (Oracle, mSQL, MySQL, Access, etc.) Experience with CRM and other content management systems.  FTP servers (and clients).  Backup Software (Veeam, Veritas, Ghost, Backup Exec, etc.). Remote (SSH, VNC, RDC, etc.) VoIP (Asterisk, Lync, Skype, etc.).  Familiar with most major business software (Intuit, Peachtree, Autodesk, Adobe, Xara, Symantec, etc.).  Various Network management, Firewall, and VPN solutions (PF, Ipchains, Iptables, NAT, IPsec, PPTP, etc.).  Security audits, Network and System Intrusion Detection tools.

Hardware: Motherboards, Memory, Processors, Power Supplies, UPS, RAID and SCSI Cards and devices, Network Storage Solutions, Printers, Scanners, Modems,  Wireless, All types of I/O cards, All types of Drives, Monitors, Network Interface Cards, Routers, Switches, and supporting cabling.

Networks: Cisco (IOS, RIP, IGRP, BGP) TCP/IP (ipv4 and ipv6), IPX, Ethernet (all), Token Ring, FDDI, Frame Relay, IPsec, Wireless (802.11 with various securities), Bluetooth, Intranet, Internet, Wide and Local.

Coding: PHP, Perl, SQL, HTML, XML, a little Java, learning C.

People: Customer Service, Consulting and Sales (both verbal and written), Management, and Training for various companies ranging in size from 2 to over 500

Related Work Experience

RLE International

   September 2022 – July 2023

Network and Systems Administrator

  • Monitoring of various systems and networks
  • Active Directory Administration across multiple forests with various trusts
  • Working with various ticketing systems including ServiceNow
  • Setup, Monitoring of security devices and cameras
  • IT Inventory Control
  • Administration of VPN software and technologies
  • Exchange and Email Administration
  • DNS Administration
  • Windows Server Administration
  • Dell laptop service
  • Development of Documentation and Guides
  • Various hardware and software analysis and troubleshooting, and upgrades
  • Employee Training and Support

Merlin Consulting

   1999 – Present

Independent Computer Consultant

  • IT infrastructure recommendation, purchasing, and implementation of many various kinds for various companies based on company goals and desired functional level
  • IT scope evaluations, audits, and planning
  • Server, network, and workstation administration, purchasing, deployment, and maintenance of various hardware, both pre-existing and purchased, including most major manufactures, including Dell, HP, Cisco, Linksys, EMC, and custom built
  • Web production including design and coding of front and back ends using PHP, Flash, Java, with several databases of various types, including MySQL, MSSQL, and Oracle
  • Maintain service packs, security patches, and firmware updates, for various hardware, including servers, routers, and switches
  • Purchased, installed, configured, and maintained various computer security solutions, including firewalls and virus protection
  • Installed, configured, managed, monitored, and troubleshooting of various network protocols, DNS, DHCP, TCP/IP, WINS, VPNs, IPSec, HOSTS, LMHOSTS, Remote Access, ICS, NAT, IP Routing, Routing tables, and Certificate Services, using various solutions, across various environments
  • Deployed and maintained various asset management solutions, providing detailed information on equipment, including serial numbers, locations, lifespan, and replacement schedules.
  • Customer Service, Sales, Training, and Support
  • General Small Business Management

Epiq Systems

   April 2017 – February 2019

Service Desk Administrator

  • Monitoring of various systems and networks
  • Active Directory Administration across multiple forests with various trusts
  • Working with various ticketing systems including ServiceNow
  • Migration and AD Sync to cloud for Microsoft 365, as well as administration and monitoring.
  • Administration of VPN software and technologies, including RSA tokens and Cisco AnyConnect.
  • Exchange Administration
  • Various hardware and software analysis and troubleshooting
  • Employee Training and Support

Kansas Health Solutions

   Feb 2016 – Sept 2016

Senior Network Administrator

  • Purchased, deployed, configured, and monitored several virtual clusters using VMware and vCenter
  • Configured and monitored EqualLogic SANs
  • Deployed and maintained Email Encryption and Anti-Spam technologies
  • Migration and AD Sync to cloud for Microsoft 365, as well as administration and monitoring.
  • Administration and maintenance of various firewalls, including Cisco, FortiGate, and Watchguard.
  • Configured and maintained VPNs
  • Data migration and archiving, and backup
  • Maintained and purchased licensing of both software and hardware
  • Employee Training and Support

Treanor Architects

   July 2014 – Dec 2015

IT Manager

  • Purchased, deployed, configured, and monitored several virtual clusters using VMware and vCenter
  • Purchased, deployed, configured, and monitored SAN using Compellent
  • Deployed and implemented Microsoft Lync
  • Administrating, monitoring, and installation of upgrades to Microsoft Exchange
  • Administration and maintenance of Barracuda spam firewall
  • Deployed and maintained VPN using Cisco ASA’s across 5 offices, including remote access
  • Various network infrastructure upgrades and maintenance, including purchasing and implementation of switches, patch panels, and wiring
  • Developed IPS using Snort, and other network security, including work with Microsoft Active Directory policies
  • Converted 20+ stand-alone Windows servers with various roles to virtual machines
  • Purchased, deployed and monitored AppAssure backup solution across the environment
  • Maintain service packs, security patches, and firmware updates, for various hardware, including servers, routers, and switches
  • Various hardware upgrades to servers, laptops, and workstations
  • Work with pre-configured images to optimize deployment for servers and workstations
  • Installed, and configured client software, data, printers, print servers, on user workstations, utilizing PCs, laptops, and virtual machines
  • Developed scripts for mapping of network drives and printers
  • Data migration and archiving
  • Maintained and purchased licensing of both software and hardware
  • Employee Training and Support

Sandhill Scientific

   Nov 2005 – March 2007

IT Manager

  • Network and Server Administration and Maintenance
  • Primary IT support for general help desk issues
  • Employee Training and Support

MCI Worldcom

   2001

IT Support

  • Computer Problem Solving
  • Employee Training on New Software and Database

Education

Bachelors of Science

Metropolitan State College - Denver, CO

  • Computer Information Systems, Applications for Business

Various Certifications, including A+, MCSE+I, Network+, Server+, Linux and Unix administration, and even Photoshop.

References

Cory Lovelace

Kyle Nix

Susan Ridenour

785-250-2085

808-797-4537

913-636-3130