Software engineer · Toronto

Bringing your ideas to life through software.

Twenty years building systems that scale, mostly in Java. The tools are changing fast — but getting the domain model right still matters more than any of them.

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allan@toronto — zsh

// latest writing

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Jun 7, 2026 Don't outsource the thinking Developers are starting to refuse to work without AI. The tools were never the problem — handing over the part that thinks is. aiengineeringcraft
May 30, 2026 Modeling the domain first Why I reach for the domain model before the framework, the database, or the API. engineeringdomain modeling

// what I'm working on

live from GitHub & WakaTime

GitHub contributions

3,702 · past year

JulAugSepOctNovDecJanFebMarAprMayJun

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Commits 84.8%Reviews 9.8%Pull requests 5.1%Issues 0.3%

AI coding

on WakaTime

55%AI-driven

AI 580

55%

Human 482

45%

</> 1,062 line changes · 14 ai sessions

Tokens

53M52.6M in · 338.4K out

Agent cost

$184actual · 7d

Prompts

2133.4K chars avg

AI coding

32%of coding time

Agents

Claude

554 lines · $132

Opus

26 lines · $51

Sonnet

0 lines · $0

Coding activity

11h 20m · last 7 days

Languages

YAML22.96%TypeScript16.31%SQL15.72%Java15.26%CSS10.05%Image (svg)5.91%Astro4.14%Vue3.59%GitIgnore file3.03%HTML1.81%Markdown1.11%HTTP Request0.04%Properties0.04%Java Properties0.02%

Editors & Tools

cmux26.04%IntelliJ IDEA20.46%Claude Code18.77%DataGrip8.19%SparkDesktop7.5%VS Code4.81%ClickUp3.53%GitHub2.62%Excel1.75%iTerm21.28%Figma1.01%Slack0.84%Unknown Editor0.83%Fork0.6%WebStorm0.47%Notion0.46%Word0.45%Zed0.2%Warp0.09%ChatGPT0.04%Postman0.03%Perplexity0.02%

Operating systems

Mac100%