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

3,742 · past year

JulAugSepOctNovDecJanFebMarAprMayJunJul

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Commits 84.1%Reviews 10.4%Pull requests 5.3%Issues 0.3%

AI coding

on WakaTime

82%AI-driven

AI 323

82%

Human 70

18%

</> 393 line changes · 7 ai sessions

Tokens

18.7M18.5M in · 155.3K out

Agent cost

$82actual · 7d

Prompts

269264 chars avg

AI coding

13%of coding time

Agents

Claude

307 lines · $47

Opus

16 lines · $34

Coding activity

6h 12m · last 7 days

Languages

Java28.61%TypeScript14.67%YAML13.99%CSS10.28%SQL8.82%Image (svg)8.41%Vue5.26%Astro3.52%Bash3.02%TOML1.69%GitIgnore file0.87%Markdown0.55%JSON0.23%Properties0.05%Java Properties0.05%

Editors & Tools

cmux35.13%Claude Code14.2%IntelliJ IDEA10.85%SparkDesktop9.88%GitHub5.74%ClickUp5.44%Slack3.53%ChatGPT2.37%iTerm22.04%DataGrip1.92%Fork1.7%Excel1.4%VS Code1.12%Figma0.85%Notes0.74%Word0.72%Unknown Editor0.57%WebStorm0.55%Notion0.47%Warp0.44%Antigravity IDE0.31%Postman0.02%

Operating systems

Mac100%