Senior 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

3,818 contributions · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 86.5%Reviews 9.6%Pull requests 3.7%Issues 0.3%

// ai coding · last 7 days

on WakaTime

99%AI-driven

AI 3,117

99%

Human 34

</> 3,151 line changes · 55 ai sessions

Tokens

328M326.7M in · 1.4M out

Agent cost

$362actual · 7d

Prompts

1008K chars avg

AI coding

49%of coding time

// agents

Claude

3,117 lines · $362

// wakatime · last 7 days

38h 58m coding

// programming languages

TypeScript36.56%Markdown20.46%Java10.4%Astro6.17%CSS4.69%Vue4.37%YAML4.35%SQL3.43%Text1.59%XML1.4%JavaScript1.36%Kotlin1.28%D0.92%HTML0.69%JSON0.69%Python0.63%Properties0.21%Bash0.19%Groovy0.17%textmate0.17%Git Config0.15%HTTP Request0.1%Batchfile0.02%

// editors & IDEs

Claude Code44.07%cmux20.66%IntelliJ IDEA6.34%Unknown Editor4.96%Warp4.42%ClickUp3.91%SparkDesktop3.59%GitHub1.86%Slack1.53%MicrosoftExcel1.53%iTerm21.4%DataGrip1.31%VS Code1.16%WebStorm1.13%AntigravityIDE0.78%MicrosoftWord0.55%Fork0.19%Notion0.19%Zed0.16%Notes0.12%ChatGPT0.08%Antigravityide0.06%

// operating systems

Mac100%