Mat Marquis
Independent Consultant at Sole Proprietorship
Medford, Massachusetts, United States
Summary
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RockstarMat Marquis is an independent consultant and front-end specialist with 15 years’ experience making websites that reliably reach every user, regardless of device, connection, or assistive technology. He focuses on inclusive web development—combining audits, hands-on remediation, and cultural change to embed accessibility, performance, and responsive practices into teams. His open-source contributions include work on high-profile projects like The COVID Tracking Project website, Picturefill, and jQuery Mobile, where he improved accessibility, responsive images, and cross-browser behavior. Previously he led inclusive web offerings at Bocoup and helped establish responsive design practices at Filament Group while working on the Boston Globe project. Based in Medford, MA, he blends pragmatic front-end engineering with CMS and build-system expertise (Netlify CMS, service workers, RSS) to deliver durable results. Colleagues rely on him not just to fix problems, but to leave teams with workflows and habits that sustain accessibility long-term.
15 years of coding experience
8 years of employment as a software developer
Github Skills (16)
html10
accessibility10
css10
uid10
responsive-design10
eleventy10
javascript10
netlify-cms10
front-end-development10
ui-design10
jquery10
testing10
nunjucks9
interface-design9
user-interface9
Programming languages (12)
Github contributions (5)
scottjehl/picturefill
Apr 2014 - Sep 2015
A responsive image polyfill for <picture>, srcset, sizes, and more
Role in this project:
Front-end Developer
Front-end DeveloperContributions:5 releases, 193 commits, 14 PRs in 1 year 5 months
Contributions summary:Mat primarily contributed to the Picturefill project by modifying and improving the JavaScript code to enhance the functionality of the responsive images polyfill. Their commits focused on refining the parsing of the `srcset` attribute, ensuring correct image selection based on the viewport size, and adding various test cases to ensure that the functionality works as expected. The user implemented changes to optimize caching and introduced specific checks to address edge cases related to the `sizes` attribute and its interaction with native `srcset` behavior in different browsers.
srcset
jquery-archive/jquery-mobile
May 2011 - Feb 2013
jQuery Mobile Framework
Role in this project:Front-end Developer
Front-end DeveloperContributions:300 commits in 1 year 9 months
Contributions summary:Mat primarily focused on improving the jQuery Mobile Framework's user interface components. Their work involved fixing bugs, such as icon visibility issues, and enhancing usability, particularly concerning input and select elements. The user also addressed accessibility issues, such as double-reading of button text in iOS VoiceOver. Their contributions included both CSS and JavaScript modifications to refine the styling and functionality of various UI widgets.
jquery-mobile
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