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

3,951 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 86.7%Reviews 9.2%Pull requests 3.9%Issues 0.3%

AI coding

on WakaTime

95%AI-driven

AI 4,298

95%

Human 225

</> 4,523 line changes · 73 ai sessions

Tokens

275.2M274.2M in · 969.1K out

Agent cost

$796actual · 7d

Prompts

875K chars avg

AI coding

36%of coding time

Agents

Claude

4,298 lines · $796

Coding activity

31h 43m · last 7 days

Languages

TypeScript30.91%Java17.66%Markdown9.97%JavaScript8.7%Astro6.83%YAML5.84%Vue5.58%CSS4.47%SQL4.16%Text1.35%JSON1.17%Bash1.14%XML1.12%Batchfile0.36%Kotlin0.26%Git Config0.18%D0.18%GitIgnore file0.1%

Editors & Tools

Claude Code35.53%cmux28.14%ClickUp5.82%IntelliJ IDEA5.33%Warp5.08%DataGrip4.3%SparkDesktop3.86%Unknown Editor2.37%Slack2.07%iTerm21.79%MicrosoftExcel1.62%VS Code1.03%GitHub0.55%AntigravityIDE0.55%MicrosoftWord0.54%Notion0.48%ChatGPT0.25%Perplexity0.22%Notes0.19%Fork0.16%Antigravityide0.06%Zed0.05%

Operating systems

Mac100%