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

3,966 · past year

JunJulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 86.5%Reviews 9.2%Pull requests 4%Issues 0.3%

AI coding

on WakaTime

94%AI-driven

AI 4,230

94%

Human 283

</> 4,513 line changes · 68 ai sessions

Tokens

255.8M255M in · 866K out

Agent cost

$740actual · 7d

Prompts

934.7K chars avg

AI coding

37%of coding time

Agents

Claude

4,230 lines · $740

Coding activity

32h 57m · last 7 days

Languages

TypeScript31.56%Java19.32%JavaScript8.37%Markdown7.79%SQL7.14%Astro6.13%Vue4.65%YAML4.52%CSS2.94%Image (svg)1.88%JSON1.26%XML1.08%Text0.98%Bash0.88%Git Config0.63%Batchfile0.35%Kotlin0.25%D0.18%GitIgnore file0.1%

Editors & Tools

Claude Code31.9%cmux31.1%DataGrip5.92%ClickUp5.81%IntelliJ IDEA5.69%SparkDesktop5.3%Warp3.65%Slack1.79%iTerm21.78%MicrosoftExcel1.58%VS Code0.99%Unknown Editor0.93%Figma0.87%AntigravityIDE0.76%GitHub0.67%Notion0.48%Perplexity0.22%Notes0.19%ChatGPT0.17%Fork0.16%Zed0.05%

Operating systems

Mac100%