Jack is a web developer and designer. He likes practicing both in his side projects. He's always on twitter as @rometty_.
Jack's articles
An Introduction to Chart.js 2.0 — Six Simple Examples
Jack Rometty takes you on a tour of Chart.js 2.0 and its various chart types. He includes plenty of easy-to-follow examples to drop in to your next project.
An Introduction to the Basics of Modern CSS Buttons
Jack Rometty takes a beginner's look at modern CSS button concepts for developers looking to understand the basics.