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

3,471 · past year

AugSepOctNovDecJanFebMarAprMayJunJul

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

Agent activity

on WakaTime

$1.6Kspend · 7d

Fable

$1,282 · 6,420 lines

Opus

$269 · 1,522 lines

GPT

$50

Others

$46 · 145 lines · 2 agents

cost share · 5 agents · actual spend

</> line changes 97% AI · 8,087 ai / 227 human

Tokens

505.4M504M in · 1.4M out

Prompts

4171.1K chars avg

Sessions

50~8 prompts each

AI pairing

14h 46m26.1% of coding time

Coding activity

10h 26m · last 7 days

Languages

Java29.18%Markdown16.54%TypeScript14.25%SQL10.63%HTML5.29%Bash4.51%JavaScript3.79%YAML3.34%TSV2.51%Java Properties1.95%Python1.61%Vue1.5%Git Config1.06%Astro0.61%JSON0.56%D0.5%Diff0.5%Properties0.5%Shell Script0.33%textmate0.28%Text0.28%CSS0.22%XML0.06%

Editors & Tools

Claude Code24.36%cmux20.29%Orca17.68%SparkDesktop12.6%Unknown Editor3.9%ClickUp3.65%Warp2.96%DataGrip2.64%Slack2.49%VS Code2.12%Fork1.91%iTerm21.87%IntelliJ IDEA1.16%GitHub0.76%Notion0.57%Zed0.47%Excel0.38%WebStorm0.17%

Operating systems

Mac100%