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

3,475 · past year

AugSepOctNovDecJanFebMarAprMayJunJul

Less More

Commits 83.4%Reviews 10.8%Pull requests 5.6%Issues 0.3%

Agent activity

on WakaTime

$1.7Kspend · 7d

Fable

$1,310 · 5,778 lines

Opus

$292 · 1,539 lines

Others

$77 · 164 lines · Sonnet, GPT, Claude

cost share · 5 agents · actual spend

</> line changes 97% AI · 7,481 ai / 200 human

Tokens

505.8M504.5M in · 1.4M out

Prompts

3981.4K chars avg

Sessions

52~8 prompts each

AI pairing

14h 12m26.8% of coding time

Coding activity

9h 32m · last 7 days

Languages

Java23.54%Markdown15.56%TypeScript15.34%SQL10.53%HTML8.55%Bash6.11%JavaScript4.07%YAML3.62%TSV2.72%Python1.75%Vue1.64%Java Properties1.64%Git Config1.19%Astro0.68%JSON0.57%D0.57%Diff0.57%Properties0.4%Shell Script0.34%textmate0.28%Text0.28%XML0.06%

Editors & Tools

Claude Code24.5%Orca19.81%cmux17.71%SparkDesktop12.26%Unknown Editor3.56%ClickUp3.4%Slack2.93%DataGrip2.68%Fork2.46%VS Code2.37%Warp2.13%iTerm21.99%GitHub1.91%IntelliJ IDEA0.7%Notion0.61%Excel0.61%WebStorm0.18%Zed0.17%ChatGPT0.01%

Operating systems

Mac100%