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

3,544 · past year

AugSepOctNovDecJanFebMarAprMayJunJulAug

Less More

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

AI activity

on WakaTime

$2.6Kspend · 7d

Opus

$2,146 · 4,721 lines

Fable

$428 · 1,317 lines

Haiku

cost share · 3 models · actual spend

</> line changes 99% AI · 6,038 ai / 73 human

Tokens

552.7M551.7M in · 926.2K out

Prompts

5361.6K chars avg

Sessions

43~12 prompts each

AI pairing

9h 26m21.9% of coding time

Coding activity

7h 12m · last 7 days

Languages

Java34.58%SQL21.24%YAML13.78%Bash11.57%TypeScript9.73%Markdown3.92%JSON1.26%Kotlin1.01%Groovy0.82%Vue0.82%Git Config0.76%Astro0.32%Java Properties0.19%

Editors & Tools

Claude Code50.09%Orca18.05%SparkDesktop9.39%Excel4.01%Unknown Editor3.18%Notion2.74%Notes2.02%DataGrip1.73%Warp1.48%GitHub1.23%IntelliJ IDEA1.08%cmux1.02%Slack1.02%ClickUp0.98%VS Code0.91%iTerm20.51%Fork0.46%ChatGPT0.09%

Operating systems

Mac100%