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

3,466 · past year

JulAugSepOctNovDecJanFebMarAprMayJunJul

Less More

Commits 83.4%Reviews 10.8%Pull requests 5.5%Issues 0.3%

Agent activity

on WakaTime

$680spend · 7d

Fable

$539 · 3,577 lines

GPT

$84

Opus

$58 · 517 lines

Claude

$0 · 145 lines

cost share · 4 agents · actual spend

</> line changes 54% AI · 4,239 ai / 3,561 human

Tokens

209.3M208.5M in · 733.7K out

Prompts

2971.3K chars avg

Sessions

41~7 prompts each

AI pairing

9h 38m16.9% of coding time

Coding activity

10h 00m · last 7 days

Languages

Java31.42%SQL20.56%TypeScript13.05%Markdown10.81%YAML4.84%HTML4.08%JavaScript3.96%Bash3.19%Java Properties2.19%Git Config1.36%Properties1.3%JSON0.83%Astro0.59%D0.53%Shell Script0.35%textmate0.3%CSS0.3%Text0.18%XML0.06%GitIgnore file0.06%HTTP Request0.06%

Editors & Tools

cmux28.71%Claude Code18.51%SparkDesktop10.8%Unknown Editor7.47%Orca5.57%DataGrip4.88%ClickUp4.68%IntelliJ IDEA3.88%Slack3.11%iTerm22.8%VS Code2.19%Warp1.95%GitHub1.95%Fork1.46%Notion0.67%WebStorm0.63%Zed0.56%‎WhatsApp0.15%Excel0.03%Postman0.01%

Operating systems

Mac100%