About Me

Jackson WhelanI’m a full-stack WordPress developer and designer who built my first website in 1999. During a slow summer at a ski resort job, I taught myself HTML and CSS using a text editor on a PC with no internet connection and was hooked. Since 2003 I have been providing expert website design & development services, creating hundreds of custom websites for clients large and small across the US and Canada.

In 2004 I was introduced to WordPress and fell in love with it. Since then I haven’t looked back and decided to only work on WordPress projects. I’ve had the pleasure of working with SaaS companies like Rejoiner and Bento, and hundreds of small businesses, entrepreneurs, and nonprofits.

In 2017 I moved to Colorado and founded Terrier Tenacity, a full-service design & marketing agency with WordPress at the heart of every project.

In October of 2022, Terrier Tenacity was acquired by Freshy, where I worked as the Dev Team Lead & WordPress Strategist.

Since November of 2023, I have been a Senior Developer at Teal – a full-service creative agency with a conscience serving nonprofits and mission-driven organizations.

I live in downtown Loveland, Colorado with my lovely and patient wife. When I’m not working to develop custom solutions or solve problems for my clients, you’ll find me on the local bike trail, or headed to the Rocky Mountains for a hike and some photography.

In My Wheelhouse…


  • HTML / CSS
  • Javascript / jQuery
  • PHP
  • React
  • mySQL
  • WordPress
  • Bootstrap
  • Git / SVN
  • NPM / Build Tools
  • ADA / WCAG

WordPress Skills

  • Custom Themes
  • Custom Plugins
  • WooCommerce Customization
  • Gravity Forms
  • Advanced Custom Fields
  • Custom Post Types
  • API Integrations
  • Complex Migrations & Imports
  • Beaver Builder & Themer Customization
  • Divi Customization
  • Troubleshooting & Support
  • Training

Infrastructure Skills

  • AWS: S3, IAM, Cloudfront
  • DNS & Domains
  • Apache / NGINX
  • CPanel / WP Engine / Pressable
  • Provisioning
  • Backups
  • Uptime Monitoring

Other Skills

  • Adobe CS
  • Figma
  • Moqups
  • Asana
  • Jira
  • Monday.com
  • Google Workspace
  • HelpScout
  • Slack