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

3,576 · past year

JulAugSepOctNovDecJanFebMarAprMayJunJul

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Commits 83.8%Reviews 10.5%Pull requests 5.4%Issues 0.3%

AI coding

on WakaTime

54%AI-driven

AI 275

54%

Human 238

46%

</> 513 line changes · 6 ai sessions

Tokens

16.5M16.4M in · 133K out

Agent cost

$72actual · 7d

Prompts

25850 chars avg

AI coding

7%of coding time

Agents

Claude

267 lines · $44

Opus

8 lines · $28

Coding activity

5h 50m · last 7 days

Languages

Java24.14%TypeScript17.42%CSS10.24%JSON8.1%YAML6.65%SQL5.04%Image (svg)4.97%Vue3.97%Bash3.51%Markdown3.21%Astro3.06%Git Config2.67%Kotlin2.6%TOML1.76%GitIgnore file1.38%XML0.61%Properties0.31%HTML0.15%Java Properties0.15%JavaScript0.08%

Editors & Tools

cmux43.22%Claude Code14.4%SparkDesktop9.99%IntelliJ IDEA4.38%ClickUp4.03%Slack3.84%GitHub3.79%VS Code3.24%iTerm22.47%ChatGPT2.05%DataGrip1.35%WebStorm1.34%Fork1.25%Excel1.22%Unknown Editor1.08%Warp0.75%Notes0.47%Word0.46%Notion0.32%Antigravity IDE0.22%Zed0.12%Canva0.02%Postman0.02%

Operating systems

Mac100%