I'm Callum, a designer and engineer in London working across product and the web. From idea to interface, I like to iterate, prototypes become products, patterns, primitives, structure emerge in the context and the needs of the people they're made for. Caring about the details that make them feel right. Some work is designed for clarity and use; some stretches the material of the web itself.
Now at Off Curricular. Previously, I helped build Opteo and worked as a research assistant at the University of Southampton.
Recent Work
Primal Instinct. Interactive landing pages in R3F.
Elara. An Open Source Drawer component for Vue.js
Fantasy. Early explorations into a local sports club fantasy game.
Previous Roles
Opteo. Designing, building, simplifying the complex, architecting multi-platform, exploring AI workflows, quickening the release cycle with design systems, marketing and more.
Design Engineer · 2018 – 2025
Selected Works
adam james warren. A digital space for his design practice, featuring a live radio stream and a generative puzzle system for his own curation.
Next.js · Pixi.js · Cloudflare Workers · Durable Objects
Roam Studio. A dual-cut typeface and soft, diffuse shadows give the site a tactility that reflects the material sensibility of Roam Studio’s practice.
Svelte · TypeScript · Sanity CMS
gj-t.world. A playful portfolio dressed as internet ads for Grant, “God’s gift to advertising.” Photography in your area. Click here.
Next.js · TypeScript · Sanity CMS
Ed Hatfield. A sleek portfolio site with a refined interface and gentle motion to foreground Ed’s bold and colourful work.
Next.js · TypeScript · Sanity CMS
ʞǝɹozʍ ɐuuɐoɾ. A restrained portfolio referencing Polish magazine layouts. Austere captions frame tight crops. Wait and the screensaver multiplies.
Design: Colin Doerffler HQ 
Next.js · Sanity CMS