Luke Brannagan

Senior Web Platform Developer · Manchester, UK

I build design systems and high-performance frontends. At Kroo I work on the public website: architecture, core repos, and accessibility. Lately I’m digging into backend so I can take on more fullstack work.

Selected work

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Kroo, series, 3 case studies Series 3 case studies
Three case studies from kroo.com: the design system, Sanity CMS, and the rebrand rebuild.
Primer observability Next.js · React · Vite
Moved Primer’s customer observability dashboards from a single static build toward config and API-driven UI, grew GOAT, and cut wasteful API calls that were roughly tripling request volume.

Writing

All writing

AI and craft, series, 2 posts Series 2 posts
Where I started on vibe-coded software, and how my opinions on AI in day-to-day work are changing.

Contact

Looking for a frontend engineer who cares about performance and accessibility? Email me.

luke@brannagan.co