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

3,921 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

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Commits 86.7%Reviews 9.4%Pull requests 3.7%Issues 0.3%

AI coding

on WakaTime

99%AI-driven

AI 3,301

99%

Human 33

</> 3,334 line changes · 59 ai sessions

Tokens

370.9M369.5M in · 1.4M out

Agent cost

$485actual · 7d

Prompts

1037.7K chars avg

AI coding

48%of coding time

Agents

Claude

3,301 lines · $485

Coding activity

36h 47m · last 7 days

Languages

TypeScript27.5%Markdown18.46%Java12.25%CSS7.5%Astro6.96%JavaScript5.44%YAML5.35%Vue4.65%SQL2.38%XML1.77%JSON1.69%Text1.56%Kotlin1.27%D0.98%Python0.65%Batchfile0.33%Properties0.23%HTML0.21%Bash0.19%Groovy0.17%Git Config0.17%textmate0.17%HTTP Request0.13%Java Properties0.02%

Editors & Tools

Claude Code47.51%cmux19.01%IntelliJ IDEA7.54%Unknown Editor5.28%ClickUp3.98%Warp3.85%SparkDesktop2.37%GitHub1.73%DataGrip1.31%VS Code1.27%MicrosoftExcel1.21%Slack1.19%AntigravityIDE0.83%MicrosoftWord0.58%WebStorm0.56%iTerm20.54%Notion0.51%ChatGPT0.22%Fork0.21%Notes0.2%Antigravityide0.06%Zed0.04%

Operating systems

Mac100%