Hello, my name is Jules Simplicio.

I develop user interface design systems that support designers and developers building digital products together.

In the past, I've worked as a designer and as a developer, and today I practice both disciplines as a design technologist working for Mozilla.

Current work

2021 – now

I've led the establishment and evolution of Firefox's design system with user interface design component libraries and documentation, support processes, and internal communications.

My current day-to-day work focuses on a web components library, design tokens, user support, and advocacy.

Past work

2019 – 2021

I designed web and mobile social media publishing features for Sprout Social.

I contributed to Sprout's design system Seeds by designing, developing, and documenting user interface components and patterns.

I also developed a Figma plugin that organized and prepared team files for design and handoff.

2016 – 2019

I designed qualitative user research web and mobile products for dscout during a major platform-wide redesign, and worked on the creation of our first library of user interface components and patterns across design and code.

2013 – 2016

I kicked off my career with short-term jobs in web design, front-end development, and product design. At the time, I also contributed to open-source projects through the Open Source Design community.