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

3,857 · past year

JulAugSepOctNovDecJanFebMarAprMayJun

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Commits 85.9%Reviews 9.2%Pull requests 4.6%Issues 0.3%

AI coding

on WakaTime

58%AI-driven

AI 896

58%

Human 641

42%

</> 1,537 line changes · 10 ai sessions

Tokens

82.5M82.3M in · 218.9K out

Agent cost

$248actual · 7d

Prompts

166190 chars avg

AI coding

13%of coding time

Agents

Claude

896 lines · $248

Coding activity

13h 34m · last 7 days

Languages

Java25.76%SQL19.5%Vue10.52%YAML6.22%TypeScript5.09%CSS4.97%Image (svg)4.38%Markdown4.22%Git Config4.05%Java Properties4.01%JSON2.71%HTTP Request2.13%Kotlin1.8%Groovy1.59%Bash1.21%Astro0.79%Properties0.58%D0.17%XML0.13%HTML0.08%Text0.08%

Editors & Tools

cmux33.05%Claude Code17.29%IntelliJ IDEA9.14%DataGrip6.86%SparkDesktop5.71%Slack5.37%MicrosoftExcel5.05%ClickUp2.43%VS Code2.42%iTerm22.19%Fork2.15%ChatGPT1.75%Figma1.3%Warp1.29%Notion1.05%Zed0.53%Postman0.51%Unknown Editor0.49%GitHub0.42%Antigravity IDE0.4%Perplexity0.25%Notes0.2%Air0.16%

Operating systems

Mac100%