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

3,911 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

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Commits 86.4%Reviews 9.2%Pull requests 4.1%Issues 0.3%

AI coding

on WakaTime

94%AI-driven

AI 4,355

94%

Human 283

</> 4,638 line changes · 65 ai sessions

Tokens

249.2M248.4M in · 803.3K out

Agent cost

$747actual · 7d

Prompts

766.3K chars avg

AI coding

36%of coding time

Agents

Claude

4,355 lines · $747

Coding activity

27h 27m · last 7 days

Languages

TypeScript31.79%Java23.21%JavaScript9.32%SQL9.2%Markdown7.54%YAML4.71%CSS3.52%Image (svg)2.26%JSON1.44%Astro1.44%XML1.29%Text1.19%Bash1.07%Vue0.74%Git Config0.55%Batchfile0.42%D0.2%GitIgnore file0.12%

Editors & Tools

cmux38.26%Claude Code17.05%DataGrip7.7%IntelliJ IDEA7.12%ClickUp7.07%SparkDesktop6.57%Warp4.43%Slack2.17%iTerm22.17%MicrosoftExcel1.75%GitHub1.16%Unknown Editor1.13%Figma1.06%VS Code0.83%AntigravityIDE0.37%Notion0.35%Perplexity0.26%ChatGPT0.21%Fork0.2%Notes0.08%Zed0.06%

Operating systems

Mac100%