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

3,469 · past year

AugSepOctNovDecJanFebMarAprMayJunJul

Less More

Commits 83.4%Reviews 10.7%Pull requests 5.5%Issues 0.3%

Agent activity

on WakaTime

$930spend · 7d

Fable

$750 · 5,608 lines

Opus

$97 · 517 lines

GPT

$70

Others

$12 · 145 lines · 2 agents

cost share · 5 agents · actual spend

</> line changes 64% AI · 6,270 ai / 3,492 human

Tokens

287.7M286.7M in · 981.6K out

Prompts

3381.1K chars avg

Sessions

46~7 prompts each

AI pairing

11h 04m19.4% of coding time

Coding activity

10h 54m · last 7 days

Languages

Java34.32%SQL16.81%Markdown14.61%TypeScript9.72%YAML4.46%Bash4.35%HTML3.71%JavaScript3.65%Java Properties1.93%Python1.56%Git Config1.29%Properties0.81%JSON0.59%Astro0.59%D0.48%Shell Script0.32%textmate0.27%Text0.27%CSS0.21%XML0.05%

Editors & Tools

cmux25.16%Claude Code20.45%SparkDesktop12.42%Orca11.45%DataGrip4.6%ClickUp4.29%IntelliJ IDEA3.34%Unknown Editor3.31%Warp3.3%Slack2.66%VS Code2.47%Fork2.02%iTerm21.88%GitHub0.95%Notion0.57%Excel0.41%WebStorm0.41%Zed0.31%

Operating systems

Mac100%