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

3,439 · 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 34m · last 7 days

Languages

TypeScript27.35%Java25.24%SQL11.87%JSON8.62%Kotlin6.6%Markdown4.66%Git Config4.13%YAML3.78%Vue2.2%CSS1.14%Java Properties0.97%HTML0.7%Image (svg)0.62%Bash0.53%XML0.53%GitIgnore file0.44%Properties0.26%Groovy0.09%HTTP Request0.09%Astro0.09%JavaScript0.09%

Editors & Tools

cmux42.95%SparkDesktop12.15%Claude Code7.99%Fork5.43%Unknown Editor3.89%VS Code3.72%Slack3.6%ClickUp3.38%IntelliJ IDEA3.18%iTerm22.48%DataGrip2.27%WebStorm2.16%GitHub2.12%Orca1.55%Zed0.92%ChatGPT0.65%Excel0.41%Warp0.4%Air0.39%Notion0.13%Notes0.11%Figma0.06%Postman0.02%Antigravity IDE0.02%Canva0.01%‎WhatsApp0.01%

Operating systems

Mac100%