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

3,543 · past year

AugSepOctNovDecJanFebMarAprMayJunJulAug

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Commits 0%Reviews 64.4%Pull requests 33.8%Issues 1.8%

AI activity

on WakaTime

$2.8Kspend · 7d

Opus

$2,201 · 4,721 lines

Fable

$575 · 1,427 lines

Others

$0 · 12 lines · Haiku, Claude

cost share · 4 models · actual spend

</> line changes 99% AI · 6,160 ai / 79 human

Tokens

626.4M625.3M in · 1.1M out

Prompts

4731.8K chars avg

Sessions

49~10 prompts each

AI pairing

9h 56m24.5% of coding time

Coding activity

8h 20m · last 7 days

Languages

Java38.67%SQL19.34%YAML11.98%TypeScript11.2%Bash9.95%Markdown4.25%JSON1.97%Kotlin0.88%Groovy0.67%Vue0.67%Astro0.26%Java Properties0.16%

Editors & Tools

Claude Code32.6%Orca24.26%SparkDesktop12.94%Excel6.16%Unknown Editor4.97%cmux3.29%Notion2.32%ClickUp2.14%DataGrip1.85%Notes1.81%Slack1.55%IntelliJ IDEA1.41%GitHub1.3%VS Code1.08%Warp0.95%iTerm20.54%Fork0.54%Perplexity0.2%ChatGPT0.1%

Operating systems

Mac100%