Tim Kadlec
Principal Product Manager at Tim Kadlec, LLC
Eagle River, Wisconsin, United States
Summary
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RockstarTim Kadlec is a Principal Product Manager at Cloudflare with 14 years of experience focused on web performance and observability, and he runs his own consultancy helping organizations build fast, resilient websites. He blends product leadership with deep front-end engineering chops, having contributed UI and performance improvements to high-profile open-source projects like WebPageTest and MDN’s Kuma. Tim has shaped industry thinking through conference leadership (co-chair of performance.now()) and by authoring a book on responsive design, demonstrating both practical craft and pedagogy. His background spans roles from developer to director, giving him a rare perspective on shipping performant user experiences at scale. Based in Eagle River, Wisconsin, he pairs pragmatic, hands-on tooling and training with product strategy to create lasting cultures of performance. Notably, his open-source work includes front-end optimizations such as font subsetting and layout refactors that materially improve load times for widely used web platforms.
14 years of coding experience
12 years of employment as a software developer
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (11)
html10
css10
mdns10
mdc10
mdt10
javascript9
user-interface8
interface-design8
ui-design8
sass4
react3
Programming languages (10)
Github contributions (5)
catchpoint/WebPageTest
Feb 2021 - Jan 2023
Official repository for WebPageTest
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1 release, 130 reviews, 676 commits in 1 year 11 months
Contributions summary:Tim primarily contributed to the user interface of the WebPageTest project. Their commits focused on adding, removing, and modifying HTML elements within several pages, including the home page, traceroute, easy testing, and video comparison pages. The changes also involved styling adjustments using CSS and incorporating images, with a particular focus on the layout and design of the user interface elements.
javascriptwebpagetest
mdn/kuma
Sep 2018 - Nov 2018
The project that powers MDN.
Role in this project:Front-end Developer
Front-end DeveloperContributions:6 commits, 6 PRs, 41 comments in 1 month
Contributions summary:Tim primarily focused on optimizing the MDN documentation site's front-end performance and appearance. Their commits demonstrate work on reducing web font usage by replacing Open Sans with Verdana and subsetting fonts for better loading times. The user also refactored existing CSS and HTML, including updating paths and removing legacy functionality. Their changes are related to layout and the removal of MozTogglers within the interface.
reactpythonsasscssjavascript
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