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

3,969 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

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Commits 86.5%Reviews 9.2%Pull requests 4.1%Issues 0.3%

AI coding

on WakaTime

94%AI-driven

AI 4,369

94%

Human 283

</> 4,652 line changes · 68 ai sessions

Tokens

273.2M272.3M in · 887.9K out

Agent cost

$791actual · 7d

Prompts

915.3K chars avg

AI coding

39%of coding time

Agents

Claude

4,369 lines · $791

Coding activity

31h 47m · last 7 days

Languages

TypeScript33.4%Java20.04%JavaScript8.68%Markdown8.08%SQL7.96%Astro6.03%YAML4.7%CSS3.05%Image (svg)1.96%JSON1.3%XML1.12%Text1.02%Bash0.93%Vue0.63%Git Config0.47%Batchfile0.35%D0.19%GitIgnore file0.09%

Editors & Tools

cmux38.4%Claude Code21%DataGrip7.08%IntelliJ IDEA6.55%ClickUp6.5%SparkDesktop5.94%Warp4.04%Slack2%iTerm22%MicrosoftExcel1.61%Unknown Editor1.04%Figma0.98%VS Code0.8%GitHub0.53%AntigravityIDE0.34%Notion0.32%Perplexity0.24%Notes0.21%ChatGPT0.19%Fork0.18%Zed0.06%

Operating systems

Mac100%