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

3,550 · past year

AugSepOctNovDecJanFebMarAprMayJunJulAug

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Commits 83.3%Reviews 10.7%Pull requests 5.6%Issues 0.3%

AI activity

on WakaTime

$2.5Kspend · 7d

Opus

$2,106 · 4,370 lines

Fable

$354 · 819 lines

cost share · 2 models · actual spend

</> line changes 99% AI · 5,189 ai / 52 human

Tokens

508.2M507.5M in · 731.7K out

Prompts

5231.4K chars avg

Sessions

40~13 prompts each

AI pairing

7h 42m20% of coding time

Coding activity

5h 30m · last 7 days

Languages

Java40.59%SQL25.22%YAML14.63%Bash6.69%Markdown5.59%Git Config2.79%Kotlin1.32%Groovy1.03%TypeScript0.96%Vue0.81%Java Properties0.29%JSON0.07%

Editors & Tools

Claude Code51.72%Orca17.31%SparkDesktop10.09%Unknown Editor3.79%Excel2.99%Notion2.06%Notes1.89%Warp1.58%DataGrip1.4%GitHub1.38%IntelliJ IDEA1.14%Slack1.03%cmux1.02%ClickUp1%VS Code0.67%Fork0.52%iTerm20.41%

Operating systems

Mac100%