contact jeffrey duggan linux system administrator

SUMMARY

Canadian-born, detail-oriented Linux System Administrator with 10+ years of experience designing, deploying, and maintaining secure and scalable Linux infrastructure. Skilled in automation, configuration management, cloud environments, and system hardening. Adept at troubleshooting complex issues and delivering open-source solutions for enterprise and small business clients.

CERTIFICATIONS

Linux Professional Instutute Level 1 – Linux System Administrator

EMPLOYMENT HISTORY

High Pass Technologies | Linux Specialist and IT Consultant | May 2015 – Present

  • Automated Linux deployments, patching, and updates using Ansible, reducing manual setup time
  • Managed MySQL/PostgreSQL databases supporting high-traffic web applications.
  • Designed, deployed, and maintained Drupal-based LAMP websites for business clients.
  • Implemented KVM virtualization and container solutions to optimize resource usage.
  • Strengthened security with iptables firewalls, SSL/TLS certificates, and system hardening.
  • Developed Python, Bash, and Perl scripts to streamline daily administration tasks.
  • Administered domains and DNS records; resolved DNS issues quickly and effectively.
  • Migrated client infrastructure to cloud platforms (Digital Ocean, Linode, OpenStack).
  • Delivered technical training and documentation for end-users and junior admins.
  • Designed and installed custom security systems and home automation solutions.
  • Installed and configured small business networking infrastructure, including routers and switches.


 Linux Magic Inc. | Linux Specialist | Vancouver, Canada | June 2023 – Sept 2023

  • Administered and upgraded Linux-based email server software for telecom providers.
  • Configured SPF, DKIM, and DMARC to enhance email security and deliverability.
  • Installed and renewed SSL certificates to maintain compliance and secure communications.
  • Provided Tier-1 technical support via email/phone with sub-2-hour SLA.
  • Diagnosed and resolved issues using SSH and Telnet, ensuring minimal downtime.
  • Coordinated with the support team to triage support requests and generate tickets.
  • Trained customers to operate their email servers, including security and resource management.
  • Collaborated with developers on software testing and customer feedback.
  • Authored FAQ and knowledge base articles, improving first-contact resolution.
  • Coordinated with sales and billing teams. Promoted billable work. Followed strict task schedule.


 TECHNICAL SKILLS

  • Operating Systems: Linux (Debian, Ubuntu, Fedora, Red Hat RHEL)
  • Automation & Scripting: Ansible, Terraform, Puppet, Jenkins, Chef, Python, Bash, Perl
  • Virtualization: KVM, Proxmox, VMware, Virtualbox, Xen
  • Containerization: Docker, Podman, Kubernetes, LXC
  • Web & Database: Apache, Nginx, MySQL, PostgreSQL, Drupal, cPanel, PHP, Tomcat
  • Networking: DNS, iptables, OpenSSL, LDAP, router & switch, VLAN, NFS, VPN, SAN
  • Tools & Protocols: rsync, git, ELK, Grafana, Nagios, Zabbix, HTTP, SMTP, RAID, Samba
  • Cloud Solutions: Digital Ocean, Linode, OpenStack, Apache CloudStack, Nextcloud


 EDUCATION

James Cook University | Queensland, Australia

Undergraduate Accounting Program, September 2006 – September 2008

St. Michaels University School | Victoria, BC

High School Diploma, September 1999 – June 2002

LANGUAGES

  • English: Native
  • Spanish: Advanced

HOBBIES

  • Enthusiast of Raspberry Pi, Home Automation, IoT, and homelab projects.

LINKS


contact jeffrey duggan linux system administrator