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

3,853 · 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 742

79%

Human 203

21%

</> 945 line changes · 16 ai sessions

Tokens

106.1M105.8M in · 267.3K out

Agent cost

$306actual · 7d

Prompts

461.5K chars avg

AI coding

18%of coding time

Agents

Claude

742 lines · $306

Coding activity

17h 13m · last 7 days

Languages

Java23.6%TypeScript13.75%SQL12.07%Vue8.93%CSS8.05%Image (svg)7.2%JavaScript4.64%YAML3.6%Git Config2.99%HTTP Request2.68%D2.26%Markdown2.22%Groovy1.76%Kotlin1.53%Astro1.23%JSON1.03%Java Properties1%Bash0.65%HTML0.31%Properties0.31%XML0.19%

Editors & Tools

cmux44.38%Claude Code15.44%DataGrip7.94%IntelliJ IDEA7.08%SparkDesktop5.24%Slack3.65%MicrosoftExcel3.64%Warp2.27%Figma1.89%VS Code1.8%iTerm21.52%Fork1.1%ClickUp0.76%Postman0.7%Notion0.7%AntigravityIDE0.46%GitHub0.37%Unknown Editor0.37%Zed0.26%Notes0.22%ChatGPT0.1%Perplexity0.07%Air0.05%

Operating systems

Mac100%