Diana Mounter

I’m a designer with a passion for the web. I specialize in design systems and have a background in user-centered design. Currently leading design operations & systems at GitHub and organizer for Design Systems Coalition NYC. I write and speak about design, code, and working with people. Living in Brooklyn, NY, and loving it.


Design Systems at GitHub

For years GitHub designers have documented UI patterns and shared common styles, but it wasn’t until 2016 that the design systems team was formed. This post shares a brief history of how the team grew, what we’ve been working on, and what’s next.

Hack Design: Design System Fundamentals

With so many examples of design systems out there, it can be hard to know where to start or know what is right for your company. This lesson introduces you to the fundamentals of building design systems.

The Peacock’s Demo: a design fable

I’m contributing to The Pastry Box Project by writing design fables. The fables I choose to write about are inspired by my own experiences as a designer and working in the tech industry.

Design Systems Handbook: putting your design system into practice

This chapter focusses on how to encourage adoption of your design system, publishing and distribution methods, and considerations for making your design system public vs private.

How to Empower Designers to Code

For many designers the best way to learn front-end development is on the job. Many companies want to attract designers who code, but may fall short of providing enough support.

Rebuilding the Foundation of Etsy’s Seller Tools

How we redesigned the seller-facing web app, and built a new style guide in the process. Written for Etsy’s Code as Craft blog, in collaboration with coworkers from the shop management team.

Embracing Change in Your Workplace

The biggest challenges you face in a workplace are often not in how to build the product but in how to build a healthy work environment.

Move Fast and Make Something (of your life)

I spent the majority of my first trip to America looking at a computer screen, while sat on a bus that traveled from San Francisco to Austin. It turned out to be a life-changing experience.


The DSC is a community for people who build design systems to share and learn from each other. I organize the NYC chapter which I formed in December 2016.
I helped form the GitHub design systems team in early 2016. I contribute to and guide the evolution of Primer, our (proudly) open-sourced design system.


Design Systems and React

ZEIT React Meetup, August 2018

Interaction of Color Systems

Web Conf Asia, June 2018

A Colorful Journey Into Design Systems

Designers and Geeks, May 2018

Interaction of Color Systems

Web A Québec, April 2018

Interaction of Color Systems

CSS Conf Australia, March 2018

Interaction of Color Systems

Clarity, November 2017

Introducing Systems into Chaos

RETHINK Product Design Series, August 2017

Design Systems: when and how much?

Active Ingredients, April 2017

Color Systems

Design Driven, March 2017

Building Design Systems at GitHub

Design Systems Coalition NYC, December 2016

How to Build Style Guides Everyone Loves

Designers Who Code, June 2016

Empowering Designers to Code

FOWD, November 2015

Building Scalable Design

Design Driven, November 2014

Design for People

Metis, November 2014

Responding to Change

Agile Asbury, October 2014
More talks on speakerdeck and slideshare.


Design Details: Cats & Design Systems

In this episode with Brent Jackson, we dig into the tools and workflows we’ve developed when working on systems, what we’re excited about in design systems, and talk about the technologies that are changing the way we build.

Design Better Podcast: from design silos to design system

From design silos to design systems. I talk with Eli Woolery and Aaron Walter from InVision about navigating the path from style guide contributor to full-time design systems manager.

Interview avec Chloe Freslon pour URelles.com

De travailler avec la couleur dans l’imprimé et sur le web, les défis techniques, et pourquoi il est difficile de devenir un expert en couleur.

Full Stack Radio, episode 75

In this interview I talk about using design systems to tame legacy CSS, and how GitHub is using utility classes to make it easier to build more consistent, maintainable user interfaces.

UXPin interview

In this interview I talk about lessons learned in building and maintaining GitHub’s design system, Primer.

Design Details: Itchy Feet

In this episode I talk about my journey to Etsy, the startup bus, why Git is a valuable tool for designers and the hardest part about onboarding designers.