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

3,446 · past year

JulAugSepOctNovDecJanFebMarAprMayJunJul

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

AI coding

on WakaTime

0%AI-driven

AI 0

Human 3,793

100%

</> 3,793 line changes · 10 ai sessions

Tokens

6.9M6.9M in · 51.2K out

Agent cost

$34actual · 7d

Prompts

461.1K chars avg

AI coding

3%of coding time

Agents

GPT

0 lines · $34

Coding activity

7h 17m · last 7 days

Languages

Java36.82%SQL22.18%TypeScript21.76%Kotlin3.93%YAML2.68%Markdown2.34%Git Config2.01%HTML1.67%JSON1.59%Java Properties1.51%Properties1.17%CSS1.09%Image (svg)0.5%Bash0.42%Groovy0.08%GitIgnore file0.08%HTTP Request0.08%Astro0.08%

Editors & Tools

cmux36.86%SparkDesktop11.31%Claude Code8.96%Unknown Editor6.24%Fork5.82%IntelliJ IDEA4.78%ClickUp4.31%DataGrip3.62%Slack3.62%iTerm23.16%GitHub3.1%VS Code2.2%WebStorm1.56%Orca1.48%Zed1.01%Warp0.78%Air0.37%ChatGPT0.22%Excel0.17%‎WhatsApp0.14%Notion0.11%Notes0.09%Figma0.06%Postman0.01%

Operating systems

Mac100%