David Dee
Verified Expert in Engineering
Red Hat Certified Engineer (RHCE) Developer
Highlands Ranch, CO, United States
Toptal member since September 10, 2018
David has 28 years of experience in IT and a demonstrated history of working in the information technology, anti-abuse, and internet services industry. A strong engineering professional skilled in Red Hat/CentOS Linux, Perl automation, and PHP, David will certainly be an asset to any initiative.
Portfolio
Experience
- Bash - 20 years
- Linux RHEL/CentOS - 20 years
- Nagios - 18 years
- Perl - 17 years
- Red Hat Certified Engineer (RHCE) - 10 years
Preferred Environment
RHEL, CentOS, PHP, Bash, Perl
The most amazing...
...thing I've coded is a set of programs that monitor my home's perimeter and can control some lights and appliances (e.g., TV channels or music sources).
Work Experience
Lead Engineer
CenturyLink (formerly Qwest Communications)
- Supported the Internet Security Services team, aka Acceptable Use Policy (AUP) Enforcement team, for 13 years, Responsible for the system architecture, software design, implementation and support for the team.
- Anticipated, designed, and implemented automation needs.
- Coordinated with peer teams to ensure that best practices and security requirements of the AUP Enforcement team are represented in peer team activities and new product implementation.
- Worked with customer-facing teams to develop automation to support customer identification and notification, malware mitigation, and other AUP-related efforts.
- Developed two Perl-based automation systems to identify and notify customers of their malware, vulnerability or email issues.
- Built a customizable web-based database table management framework in PHP that we use in many of our subsystems.
- Created a metric reporting system in PHP and Perl, enabling both on-demand and pre-staged query results viewable on the web as well as exportable to Excel.
- Implemented automation for a class-based system to build and manage ongoing configurations of our RHEL 6 and 7 machines (functionality similar to “Puppet” or “Chef”). A flexible “Kickstart” PHP script enables rapid build or rebuild of systems, and a complex Bash script maintains their ongoing configurations.
- Developed a DMARC management and report monitoring framework with a PHP management GUI, a Perl back-end for monitoring DNS configuration and ingesting nightly DMARC Reports, and Elasticsearch for querying the report data.
- Supported the Intrusion Detection (IDS) and the IP Engineering teams with development and system administration responsibilities.
- Implemented and maintained system monitoring using NAGIOS.
- Implemented a web-based intrusion detection system (IDS) log review system.
- Designed and implemented a web-based network scan-management tool that was in use for 11 years.
Information Technology Manager, Senior Unix Admin
BizBlast.com
- Managed IT initiatives and oversaw system administration.
Info Systems Operations Manager, Senior Unix Administrator
TRIP.com
- Managed the IS team.
- Administered the Unix systems.
Software Engineer
GTE Internetworking
- Supported development of a RADIUS access control system.
System Admin, Systems/Network Engineer
Computer Sciences Corporation
- Handled systems administration and contributed to the development and maintenance of systems and networks.
Experience
Home Control Suite of Systems
Education
Master of Science Degree in Computer Science
Johns Hopkins University - Columbia, MD
Bachelor of Science Degree in Information & Computer Science
Georgia Institute of Technology - Atlanta, GA
Certifications
Red Hat Certified Engineer #110-399-607
Red Hat
Skills
Libraries/APIs
libvirt
Tools
Nagios, Git, Apache, MQTT
Languages
Bash, Perl, PHP, JavaScript, HTML
Platforms
CentOS 6, Linux CentOS 7, Linux RHEL/CentOS, CentOS, Red Hat Linux, Solaris, Linux, Adobe ColdFusion
Storage
PostgreSQL, MySQL, Elasticsearch, PostgreSQL 10
Other
Red Hat Certified Engineer (RHCE), RHEL, Mosquitto
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