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

3,926 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 86.7%Reviews 9.4%Pull requests 3.7%Issues 0.3%

AI coding

on WakaTime

98%AI-driven

AI 3,188

98%

Human 49

</> 3,237 line changes · 65 ai sessions

Tokens

355.2M353.8M in · 1.4M out

Agent cost

$440actual · 7d

Prompts

1073.7K chars avg

AI coding

49%of coding time

Agents

Claude

3,188 lines · $440

Coding activity

37h 21m · last 7 days

Languages

TypeScript26.28%Java19.05%Markdown15.14%JavaScript7.78%CSS7.48%Astro6.78%Vue5%YAML3.77%SQL2.97%JSON1.58%XML1.21%Python0.66%Text0.53%Batchfile0.31%D0.31%Properties0.23%Kotlin0.2%HTML0.2%Bash0.18%Git Config0.16%textmate0.16%Java Properties0.02%

Editors & Tools

Claude Code45.35%cmux21.81%IntelliJ IDEA6.01%Unknown Editor5.77%ClickUp4.58%SparkDesktop3.18%DataGrip2.59%Warp2.57%GitHub1.49%Slack1.15%MicrosoftExcel1.09%VS Code1.06%AntigravityIDE0.68%MicrosoftWord0.58%WebStorm0.56%Notion0.51%iTerm20.4%ChatGPT0.22%Notes0.2%Fork0.13%Antigravityide0.06%

Operating systems

Mac100%