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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've written a book about.
## recent_writing see_all →
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cloudflareWhat the next Git platform needs to remember
A colleague made a suggestion this week that I’ve been thinking about since: the Git platform should keep the prompts we use to write the software. We were…
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technologyThe ciphertext has a calendar
In March 2023, someone pointed a home-built GPS receiver at the sky and found this:
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aiAI is making the nice version worth building
There is a particular kind of software improvement that lives forever in the backlog. Everyone agrees it would be better. Nobody can quite justify doing it.
## ~/projects all_149 →
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Git hosting and code review on Cloudflare — with Git implemented from scratch in TypeScript 2026TypeScriptCloudflare WorkersDurable ObjectsR2D1QueuesWorkflows
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The Other Staffroom — a social network for teachers in England, with school-email verification and a chronological feed 2026ReactTypeScriptHonoCloudflare WorkersD1R2Durable Objects
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Fox — reproducible market-data research, machine-learning experiments and offline backtesting 2026PythonAlpaca APIpandasParquetscikit-learnPyTorch
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Keep Nigel Alive — a roomful of people co-parenting a digital tardigrade at Leeds Digital Festival (demo now retired) 2026TypeScriptCloudflare WorkersDurable ObjectsWebSocketsWorkers AIWorkflowsD1R2Queues
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si — transistor-level silicon design, automatic layout and simulation in the browser, including a Z80 2026TypeScriptWebGL2HTML CanvasVite
## ~/work full_timeline →
- 2023 →CDS UK — Solution Architect · now
- 2021 – 2023HeadClear — Chief Technology Officer (co-founder)
- 2020 – 2021Advanced — Principal Software Engineer
- 2019 – 2020Mitrefinch — Developer → Delivery Team Lead
- 2016 – 2019IFS — Software Engineer → Senior
If you spotted a mistake or want to reply, send me an email.
140 posts · 149 projects · archive since 2013
— jl