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

3,695 · past year

JulAugSepOctNovDecJanFebMarAprMayJun

Less More

Commits 85%Reviews 9.7%Pull requests 5%Issues 0.3%

AI coding

on WakaTime

27%AI-driven

AI 472

27%

Human 1,277

73%

</> 1,749 line changes · 21 ai sessions

Tokens

56.8M56.5M in · 268.4K out

Agent cost

$183actual · 7d

Prompts

2523.2K chars avg

AI coding

17%of coding time

Agents

Claude

456 lines · $121

Opus

16 lines · $62

Sonnet

0 lines · $0

Coding activity

14h 49m · last 7 days

Languages

SQL19.3%Java19.16%YAML18.25%TypeScript13.61%CSS9.6%Astro5.3%JavaScript3.73%Vue2.58%GitIgnore file2.3%Markdown1.57%HTML1.47%Image (svg)0.98%Bash0.66%Java Properties0.49%Batchfile0.35%Makefile0.28%Properties0.14%XML0.07%Text0.07%JSON0.03%Git Config0.03%HTTP Request0.03%

Editors & Tools

cmux35.72%Claude Code11.93%IntelliJ IDEA11.08%SparkDesktop8.04%DataGrip6.33%Slack4.56%ClickUp3.66%VS Code3.43%Excel3.36%Fork2.1%iTerm22.05%ChatGPT1.7%GitHub1.42%Antigravity IDE1.14%Notion0.89%Unknown Editor0.8%Chrome0.79%Warp0.57%WebStorm0.22%Zed0.09%Notes0.08%PowerPoint0.02%Perplexity0.02%Postman0.01%Word0.01%

Operating systems

Mac100%