Diana Mounter is the Former Head of Design at GitHub, where she spent nearly nine years shaping one of the most beloved tools in software development. From turning Primer into a full-fledged design system to leading the launch of Dark Mode at GitHub’s 2020 conference, Diana was behind some of the company’s most iconic design moments.
Her journey started in a print shop in the UK, took her across the world to Australia, and eventually led her to GitHub, the product she personally loved the most. Along the way, she discovered that design isn’t just about aesthetics—it’s about meeting the moment, working side by side with engineers, and solving real customer problems.
In this conversation, Diana shares what it means to design in the age of AI, why embracing change is the most important skill in tech, and how constraints in design systems can actually fuel creativity.
Whether you’re a designer, founder, or engineer, her story is a masterclass in building products that people love.
Watch to learn:
📌 How GitHub’s Dark Mode was built and launched
📌 Why design systems like Primer unlock creativity instead of limiting it
📌 The mindset every designer needs in the age of generative AI
00:00 Intro
02:02 When a Designer Falls for Coding
04:54 Becoming Head of Design for the Product I Love Most
07:17 EO Partner Highlight
08:20 How GitHub’s Dark Mode Was Born
12:07 Constraints Spark Creativity: Insights from Shaping Primer
15:08 Don’t Be a Designer Who Only Designs
✨EO Partner Highlight: EO x Lovable✨
📍Promo code: EO20YT
Provides users with a 20% discount on their first purchase of the Lovable Pro plan
Valid until September 30, 2025
#github #design #developer
EO stands for Entrepreneur& Opportunities. As we’re looking to feature more inspiring stories of entrepreneurs all over the world, don’t hesitate to contact us at partner@eoeoeo.net
LinkedIn | @EO STUDIO
X | @eostudi0
