Cloudflare OS is an architecture of distrust
The strangest thing in the Cloudflare OS source code took me a while to understand.
JAMIE LORD
STAMFORD, LINCOLNSHIRE
[ jl ]
Solution Architect at CDS
·
Stamford, Lincolnshire
Building software, for the love of it.
Architect, developer, or consultant — whatever the work calls for. My toolkit evolves; right now that's mostly Cloudflare's Developer Platform, which I'm writing a book about.
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Opus 5 gets things wrong more quietly
There is a gap in one of my paintings, near the top-left where the brush ran out before it reached the edge, and through the gap you can see a photograph. Not a painted impressi...
ai
Nobody ever knew how it worked
Cyrus Lopez published an essay last week, ‘The Last People Who Know How It Works’, and it’s the best thing I’ve read about computing this year. It mourns an intimacy with machin...
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2026
cutiemail — a small, self-contained mail server in TypeScript, built from the byte up
TypeScriptNode.jsSQLiteSMTPIMAP4rev2DKIM/SPF/DMARC -
2026
paint — a from-scratch GPU oil-painting engine and autonomous painter
TypeScriptWebGPUWGSLVite -
2026
Mars Rover Coder — a programming game for a primary school careers fair
HTMLCSSvanilla JSCloudflare Workers -
2026
Daily film guessing game (Spotle-style)
React 18TypeScriptXStateTailwind CSSViteCloudflare Pages -
2026
trolli — budget-aware weekly meal planner and shopping list
React 19TypeScriptViteHonoCloudflare Workers
03
Where I've worked
2023 →
CDS UK
Solution Architect
· now
2021 – 2023
HeadClear
Chief Technology Officer (co-founder)
2020 – 2021
Advanced
Principal Software Engineer
2019 – 2020
Mitrefinch
Developer → Delivery Team Lead
2016 – 2019
IFS
Software Engineer → Senior
Built by hand in Stamford, Lincolnshire.
135 posts · 137 projects · archive since 2013
— jl