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

3,569 · 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

Java28.63%TypeScript14.66%YAML14.02%CSS10.26%SQL8.8%Image (svg)8.43%Vue5.27%Astro3.53%Bash3.02%TOML1.65%GitIgnore file0.87%Markdown0.55%JSON0.23%Properties0.05%Java Properties0.05%

Editors & Tools

cmux35.16%Claude Code14.25%IntelliJ IDEA10.83%SparkDesktop9.86%GitHub5.73%ClickUp5.43%Slack3.52%ChatGPT2.37%iTerm22.03%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%