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

3,947 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 86.2%Reviews 9.1%Pull requests 4.4%Issues 0.3%

AI coding

on WakaTime

93%AI-driven

AI 4,243

93%

Human 326

</> 4,569 line changes · 57 ai sessions

Tokens

224.7M223.9M in · 742.7K out

Agent cost

$710actual · 7d

Prompts

726.1K chars avg

AI coding

31%of coding time

Agents

Claude

4,243 lines · $710

Coding activity

27h 30m · last 7 days

Languages

TypeScript32.04%Java24.88%SQL11.67%JavaScript6.84%Markdown5.36%YAML4.55%Image (svg)4.29%CSS2.61%D1.36%Text1.19%Astro1.1%Bash1.07%XML0.9%Vue0.7%Git Config0.55%JSON0.46%HTML0.17%Properties0.14%GitIgnore file0.12%

Editors & Tools

cmux45.65%Claude Code12.86%DataGrip8.21%IntelliJ IDEA6.77%SparkDesktop5.87%ClickUp5.1%Warp4.22%MicrosoftExcel2.31%Slack2.17%iTerm22.06%Figma1.44%Unknown Editor0.97%GitHub0.88%VS Code0.59%AntigravityIDE0.32%Fork0.27%Perplexity0.23%Zed0.05%ChatGPT0.05%

Operating systems

Mac100%