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

3,606 · past year

JulAugSepOctNovDecJanFebMarAprMayJunJul

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Commits 83.5%Reviews 10.7%Pull requests 5.4%Issues 0.3%

AI coding

on WakaTime

41%AI-driven

AI 182

41%

Human 267

59%

</> 449 line changes · 3 ai sessions

Tokens

8.6M8.5M in · 43.8K out

Agent cost

$43actual · 7d

Prompts

19215 chars avg

AI coding

4%of coding time

Agents

Claude

174 lines · $30

Opus

8 lines · $14

Coding activity

6h 05m · last 7 days

Languages

Java23.75%TypeScript13.63%SQL9.41%CSS9.23%JSON7.83%YAML7.04%Kotlin6.33%Markdown5.01%Git Config4.49%Vue3.87%Astro2.2%TOML1.67%GitIgnore file1.32%Java Properties1.06%Image (svg)0.7%Bash0.7%HTML0.62%XML0.62%Properties0.35%Groovy0.09%JavaScript0.09%

Editors & Tools

cmux48.94%Claude Code11.72%SparkDesktop9.83%ClickUp3.9%Slack3.88%VS Code3.78%IntelliJ IDEA3.6%iTerm22.42%Fork2.32%Unknown Editor2.05%DataGrip1.98%GitHub1.55%WebStorm1.23%ChatGPT0.92%Warp0.39%Notes0.38%Zed0.31%Excel0.29%Notion0.24%Antigravity IDE0.18%Figma0.07%Canva0.01%Postman0.01%

Operating systems

Mac100%