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

3,540 · past year

AugSepOctNovDecJanFebMarAprMayJunJul

Less More

Commits 83.3%Reviews 10.8%Pull requests 5.7%Issues 0.3%

AI activity

on WakaTime

$2.8Kspend · 7d

Opus

$2,232 · 4,736 lines

Fable

$575 · 1,427 lines

Others

$0 · 25 lines · Haiku, Claude

cost share · 4 models · actual spend

</> line changes 99% AI · 6,188 ai / 79 human

Tokens

636.6M635.5M in · 1.1M out

Prompts

5031.7K chars avg

Sessions

55~9 prompts each

AI pairing

10h 50m24.2% of coding time

Coding activity

8h 59m · last 7 days

Languages

Java38.13%SQL19.09%YAML10.55%TypeScript10.23%Bash9.23%Markdown4.64%JavaScript4.22%JSON1.79%Kotlin0.79%Groovy0.63%Astro0.37%Java Properties0.16%Vue0.16%

Editors & Tools

Claude Code31.44%Orca24.32%SparkDesktop14.32%cmux5.71%Excel3.95%ClickUp2.35%Notion2.16%Unknown Editor1.99%GitHub1.91%VS Code1.84%DataGrip1.82%Slack1.61%Warp1.33%IntelliJ IDEA1.33%Notes1.29%ChatGPT1.11%Fork0.54%iTerm20.49%Zed0.3%Perplexity0.19%

Operating systems

Mac100%