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

3,663 · past year

JulAugSepOctNovDecJanFebMarAprMayJunJul

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Commits 83.4%Reviews 10.8%Pull requests 5.5%Issues 0.3%

AI coding

on WakaTime

11%AI-driven

AI 85

11%

Human 659

89%

</> 744 line changes · 3 ai sessions

Tokens

309K306.7K in · 2.3K out

Agent cost

$22actual · 7d

Prompts

27546 chars avg

AI coding

2%of coding time

Agents

Claude

79 lines · $17

Opus

6 lines · $4

Coding activity

6h 25m · last 7 days

Languages

TypeScript26.04%Java25.86%SQL12.13%JSON8.5%Kotlin6.73%Markdown4.78%Git Config4.25%YAML3.81%Vue2.21%CSS1.15%Java Properties0.97%HTML0.71%Image (svg)0.71%Bash0.62%XML0.53%GitIgnore file0.44%Properties0.27%Groovy0.09%Astro0.09%JavaScript0.09%

Editors & Tools

cmux44.33%SparkDesktop11.77%Claude Code8.07%Fork6.01%VS Code3.77%ClickUp3.41%Slack3.26%IntelliJ IDEA3.23%Unknown Editor2.6%iTerm22.52%DataGrip2.31%GitHub2.15%WebStorm1.96%Orca1.57%Zed0.91%ChatGPT0.66%Excel0.41%Warp0.4%Air0.4%Notes0.11%Figma0.06%Antigravity IDE0.02%Canva0.01%Notion0.01%Postman0.01%

Operating systems

Mac100%