Daperture

Contact
Donald Lee
Residing in Allentown, PA
kndonlee at gmail dot com
Contact Form

Summary
Systems & Network Administrator with wide range of experience maintaining various platforms including, but not limited to: Linux, Windows, MacOS, Nortel.

Interests
Large clustered applications primarily based on the linux platform and networking are a great deal of interest to me.

Specialties
Software: Postfix Mail, Bind DNS, Apache WebServers, IP Loadbalancing, Shell/Perl Scripting, MySQL, Radmind, Netboot, MacOSX Server, Windows XP/Vista/2003, Active Directory, OpenVPN.

Networking: Nortel 470,5500,8600 series switch/router configuration, Layer 2/3 Switching & Routing.

Experience
Network/Systems Engineer
NuNet Inc : Allentown, PA (09/2007-Present)

• Rearchitected mail system for high availability using LVS and optimized current installation of Postfix, Amavis, Spamassassin processing 5 million+ connections per day
• Migrated MTAs from recently acquired ISP by writing perl scripts to parse and import user/configuration data
• Evaluated moving mail system to Dspam for faster mail scanning and accurate spam detection
• Tuned MySQL databases for webhosting and busy greylisting environment
• Assessed current architecture and created consolidation strategy for virtualizing hosts using Xen
• Setup and managed OpenVPN for remote access to intranet
• Integrated Linux backup and mail servers to use EMC Clarion over Fibre Channel SAN

Network Specialist
Ajilon Consulting, City of Philadelphia : Philadelphia, PA (4/2007-09/2007)

• Configured and troubleshooted Nortel 470, 5000 and 8600 series switches and routers on 24k host network
• Proposed and used open source tools Cacti, SNMP to monitor network usage on switching/routing equipment
• Created a Log Viewer using PHP/MySQL to parse 7 million hits/day on AIX proxies for management to pinpoint bandwidth overuse by departments
• Entrusted with setup of internet facing Windows 2003 DNS environment
• Acted as final support for internal and external networking problems
• Provided guidance and mentoring to peers
• Created a test bed of load balanced Linux proxies using LVS, Squid, Shorewall to replace aging AIX environment
• Trained on Crossbeam systems for Checkpoint Firewall

Assistant IT Administrator
School of Visual Art & Design, SAU : Collegedale, TN (8/2004-1/2007)

• Architected lab deployment strategy in mixed Active Directory, Macintosh environment for 5 labs by meshing together Active Directory, Netboot, Radmind, Multicasting, Shell Scripting and Open Directory to automate software deployments according to pushed policies
• Created and managed internal webhosting environment consisting of PHP, MySQL and Apache
• Assessed and translated user's needs from daily observations into technical solutions immediately available to students
• Assisted with RFI procurement of SAN/NAS storage solutions
• Familiar with integrating BlueArc NAS, Isilon NAS, Rorke FC Array into Active Directory environments

Education

• Southern Adventist University : Collegedale, TN (2002-2006)
• Major B.A. Computer Science
• Minor Graphic Design
• Senior Thesis
  Researching processor design for optimizing horizontally scaling (multi-core) processors. My paper explored alternatives to traditional processor design that would alleviate the issues involved with multi-core processing.

Leadership & Achievements

• 2004-2006 Media Relations of Asian Club (SAU)
• 2002 Who's who among high school students
• 2003 Blue Mountain Academy Volunteer Appreciation
• 2005 SAUBookTrade website creation