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

3,965 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 85.9%Reviews 9.2%Pull requests 4.6%Issues 0.3%

AI coding

on WakaTime

81%AI-driven

AI 882

81%

Human 203

19%

</> 1,085 line changes · 21 ai sessions

Tokens

135.1M134.7M in · 335.3K out

Agent cost

$389actual · 7d

Prompts

373.3K chars avg

AI coding

17%of coding time

Agents

Claude

882 lines · $389

Coding activity

17h 19m · last 7 days

Languages

Java23.47%TypeScript18.81%SQL13.01%CSS8.01%Image (svg)7.16%Vue4.92%JavaScript4.62%YAML3.22%Git Config2.97%HTTP Request2.67%D2.25%Markdown2.2%Groovy1.74%Astro1.23%JSON1.02%Java Properties1.02%Bash0.64%HTML0.3%Properties0.3%Kotlin0.3%XML0.17%

Editors & Tools

cmux50.25%Claude Code13.77%DataGrip7.37%IntelliJ IDEA5.89%SparkDesktop4.63%Slack3.29%MicrosoftExcel3.27%Warp2.08%Figma1.7%VS Code1.62%iTerm21.37%Fork0.92%GitHub0.91%ClickUp0.68%Postman0.63%AntigravityIDE0.41%Notion0.35%Unknown Editor0.33%Zed0.24%Notes0.2%Perplexity0.06%Air0.05%

Operating systems

Mac100%