I build.

Seven years at kosas.com, a $500M+ global cosmetics brand, as the sole design engineer and technology lead working across product, UX, front-end architecture, custom apps, marketing, and experimentation — alongside a team that trusted me to take ideas from concept to production.

I built the Shopify theme and design system from the ground up, and designed and shipped a Shade Finder quiz that generated $4.2M in direct revenue. From there, I ran continuous A/B tests across acquisition and conversion surfaces, and built internal tools that save the CX and operations teams countless hours per week.

Over time the work expanded beyond the interface — into market understanding, buyer behavior, campaign strategy, and positioning. Shipping ideas that actually translate into revenue requires all of it.

Prototyped computer vision-based shade matching using OpenCV — detecting undertones, facial regions, and filtering noise like blemishes and hair to improve accuracy beyond traditional quiz flows.

I built a fraud detection system that now stops hundreds of fraudulent orders each month — return abuse, address cycling, reseller fraud. It’s live at Kosas and being developed into a standalone product for other Shopify merchants as Prismlock.

Currently refreshing the UX to align with the new brand direction. See the design work in Figma.

Canary Yellow is the art store for the Virgil Abloh Archive — a privately stewarded collection of over 20,000 objects spanning fashion, design, music, art, and advertising.

The first drop: the Air Jordan 1 OG High x V.A.A..

One week.

Design and engineering happening simultaneously, while on a 2,614 mile college tour across 10 states. I was coding from the passenger seat on a mobile hotspot while my wife drove.

GitHub Actions and Shopify CLI handled preview environments for every pull request. When I was away from the laptop, Claude Code on my phone handled final tweaks.

We shipped on time.

There are a few hidden interactions throughout the site — small details you only notice if you go looking.

Built with Devin Jacoviello and Nick Jones, and Naino Ashizuru on art direction — a team that moves fast and holds a high bar.

Started as a weekend side project. Built a Tumblr theme, then another. Those two themes replaced an active Microsoft retainer. That was the signal.

The business grew with Tumblr, then evolved with Shopify as the platform took over. Systems I've built are now used by over 100,000 businesses, generating $7M+ in revenue across both platforms.

District is the flagship — a premium Shopify theme in the top 1% for performance across 1,000+ themes. Fast by default, accessible by design.

I built a custom theme framework from the ground up: islands architecture, zero JavaScript by default, instant reloads, and production-ready performance out of the box. The goal was simple — make it hard to ship a slow storefront.

That work extended into custom components, libraries, and storefront systems for Shopify enterprise merchants.

A text message. A screen recording. Ye zooming in on his Photos app.

“I want the website to be like this.”

That was the brief.

Ambiguous direction, high expectations, no room for error. I started prototyping in the browser and translated it into a working system and shipped.

Built with Matt Smith on art direction. Wes Bos later broke down the engineering in a 16-minute analysis after digging through the code.

We launched, then made the decision to part ways as a client. The project ended there.