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

Less More

Commits 84%Reviews 10.4%Pull requests 5.3%Issues 0.3%

AI coding

on WakaTime

61%AI-driven

AI 323

61%

Human 208

39%

</> 531 line changes · 7 ai sessions

Tokens

18.7M18.5M in · 155.3K out

Agent cost

$82actual · 7d

Prompts

269264 chars avg

AI coding

10%of coding time

Agents

Claude

307 lines · $47

Opus

16 lines · $34

Coding activity

6h 35m · last 7 days

Languages

Java23.67%TypeScript19.29%CSS9.65%SQL9.38%Image (svg)8.07%JSON7.06%YAML5.01%Vue3.53%Astro3.32%Markdown2.85%Bash2.85%Kotlin2.27%TOML1.58%GitIgnore file1.21%HTML0.11%JavaScript0.05%Properties0.05%Java Properties0.05%

Editors & Tools

cmux35.78%Claude Code12.59%SparkDesktop11.3%IntelliJ IDEA6.36%ClickUp5.16%GitHub4.85%Slack4.59%VS Code3.03%DataGrip2.67%iTerm22.2%ChatGPT2.13%WebStorm1.72%Fork1.6%Unknown Editor1.28%Excel1.14%Warp0.96%Figma0.69%Notes0.6%Word0.59%Notion0.41%Antigravity IDE0.28%Canva0.02%Postman0.02%

Operating systems

Mac100%