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

JulAugSepOctNovDecJanFebMarAprMayJun

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

AI coding

on WakaTime

79%AI-driven

AI 743

79%

Human 203

21%

</> 946 line changes · 20 ai sessions

Tokens

122M121.7M in · 298.9K out

Agent cost

$352actual · 7d

Prompts

511.6K chars avg

AI coding

18%of coding time

Agents

Claude

743 lines · $352

Coding activity

18h 00m · last 7 days

Languages

Java22.59%TypeScript17.48%SQL11.55%Vue8.54%CSS7.71%Image (svg)6.88%JavaScript4.43%YAML3.44%Git Config2.89%HTTP Request2.57%D2.18%Markdown2.1%Groovy1.7%Kotlin1.46%Astro1.19%JSON0.99%Java Properties0.95%Bash0.63%HTML0.28%Properties0.28%XML0.16%

Editors & Tools

cmux48.22%Claude Code14.62%DataGrip7.07%IntelliJ IDEA6.57%SparkDesktop4.78%Slack3.39%MicrosoftExcel3.37%Warp2.14%Figma1.75%VS Code1.67%iTerm21.41%Fork1.02%GitHub0.94%ClickUp0.71%Postman0.65%AntigravityIDE0.42%Notion0.36%Unknown Editor0.34%Zed0.24%Notes0.2%Perplexity0.06%Air0.05%

Operating systems

Mac100%