Callum Flack

Hi, I’m Callum. I make beautiful hypertext products.

I’m a design engineer and product leader with over 20 years of experience. From vision to details and back again, my job is to build beautifully designed hypertext interfaces that work in the blink of an eye, creating the most valued currency—trust.

Currently available for projects, teams, missions

WritingView all

Writing about creativity, design and complexity through the lens of attention, interfaces and systems composition. Signup for new posts.

Configuring your design system

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Configuring Tailwind as a Design System

Well-crafted UI is your last defense against the coming slopwave of careless AI apps. Here’s how customizing Tailwind can save you time and design bugs so you can focus on the irrational amount of care good UI requires.

Nembrotha Aurea

The instantaneous language of beauty

We rely on the pre-verbal language of aesthetics to sense our environment before we can think. We are naturally attuned to beauty because we innately know it represents a higher possibility of worthwhile information.

David Lynch and his fingerspitzenfughl

The matter of taste

When business hinges on the user experience and how products make people feel, success or failure is often a matter of taste. But only when one understands taste as intuitive knowhow, not subjective preference.

Mick Jagger reading the tracklisting of Bob Dylan's Bringing It All Back Home

Creativity starts with love and theft

Making something new doesn’t happen by magic. An irresistible itch has to be scratched, love has to be found. An accidental essay about the missing triggers in the creative process, inspired by my years of collecting soul 45s.