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

JulAugSepOctNovDecJanFebMarAprMayJun

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

AI coding

on WakaTime

70%AI-driven

AI 323

70%

Human 136

30%

</> 459 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 31m · last 7 days

Languages

Java27.16%YAML17.69%TypeScript13.9%CSS9.77%SQL8.95%Image (svg)8.01%Vue4.99%Astro3.36%Bash2.88%TOML1.59%GitIgnore file0.82%Markdown0.52%JSON0.26%Properties0.04%Java Properties0.04%

Editors & Tools

cmux33.77%Claude Code14.32%IntelliJ IDEA11.96%SparkDesktop9.96%GitHub5.79%ClickUp5.49%Slack3.56%ChatGPT2.39%DataGrip2.08%iTerm22.05%VS Code1.83%Excel1.41%Figma0.86%Notes0.74%Word0.73%Fork0.67%Unknown Editor0.58%WebStorm0.56%Notion0.47%Warp0.44%Antigravity IDE0.32%Postman0.02%

Operating systems

Mac100%