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

3,737 · past year

JulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 84.4%Reviews 10.1%Pull requests 5.2%Issues 0.3%

AI coding

on WakaTime

72%AI-driven

AI 393

72%

Human 152

28%

</> 545 line changes · 12 ai sessions

Tokens

39.6M39.4M in · 255.9K out

Agent cost

$144actual · 7d

Prompts

114778 chars avg

AI coding

20%of coding time

Agents

Claude

383 lines · $113

Opus

10 lines · $31

Coding activity

8h 30m · last 7 days

Languages

YAML22.94%Java21.87%TypeScript15.66%Image (svg)7.83%CSS7.78%SQL7.38%Astro4.9%GitIgnore file4.03%Vue2.77%Bash2.15%Markdown1.82%HTML0.76%Properties0.06%Java Properties0.06%

Editors & Tools

cmux29.83%IntelliJ IDEA18.56%Claude Code15.44%SparkDesktop7.26%GitHub5.97%VS Code5.59%ClickUp4.24%DataGrip2.6%ChatGPT2.37%Slack2.17%Excel1.67%iTerm21.19%Figma1.01%Word0.86%Warp0.53%Unknown Editor0.36%Notes0.27%Notion0.06%Postman0.03%

Operating systems

Mac100%