Andy Miller
Founder at Grav / Trilby Media / RocketTheme
Golden, Colorado, United States
Summary
🤩
RockstarAndy Miller is a founder and seasoned software engineer with 20 years of experience building and securing web-facing PHP applications and CMS platforms. As author of Grav CMS and a co-founder of Joomla, he blends product vision with hands-on full-stack development across front-end themes and back-end security. His open-source contributions span high-profile projects—improving Parsedown’s extensibility and hardening Grav against XSS—demonstrating a focus on maintainable, secure code. He has repeatedly shipped UI and tooling enhancements (admin plugins, documentation sites, SCSS fixes) that make developer and editor workflows smoother. Based in Golden, Colorado, Andy pairs entrepreneurial leadership with deep technical craft, often surfacing less-obvious improvements like CLI security commands and plugin hooks that enable extensibility.
20 years of coding experience
Github Skills (36)
application-framework10
parserator10
markdown10
content-management-system10
cms10
debug10
javascript10
parser10
extensibility10
css10
app-framework10
sc10
security10
php10
scs10
Programming languages (15)
Github contributions (5)
getgrav/grav
Aug 2014 - Jan 2023
Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS powered by PHP, Markdown, Twig, and Symfony
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:321 releases, 11 reviews, 3646 commits in 8 years 6 months
Contributions summary:Andy contributed to the Grav CMS flat-file content management system, focusing on security enhancements. Their work included improvements to XSS vulnerability detection and mitigation by modifying the `Utils.php` and `Security.php` files to add new rules for XSS detection, implement file sanitization, and also implementing a new CLI command. The contributions point towards the user's work on improving the security posture of the CMS by addressing potential vulnerabilities and providing a command line interface for security scanning.
cmswiki-engineflat-fileprestashop-modulephp-markdown
getgrav/grav-learn
Aug 2014 - Sep 2022
Grav Learn (exhaustive grav documentation)
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:4 reviews, 775 commits, 607 PRs in 8 years 2 months
Contributions summary:Andy primarily contributed to the documentation site for the Grav CMS, specifically improving the Learn theme. They added and improved the "edit this page" functionality, enhanced the visual design by adding and updating CSS rules, and included features like a Grav logo, a version switcher, and various fixes. These contributions show a focus on both front-end and back-end modifications, including the addition of a new theme.
exhaustivegravphpgrav-plugin
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.