Jules Huang

jules.huang@northline.aiSenior Software Engineer · Engineering

Tools used

ClaudePerplexity

AI spend (3 mo)$3,746.72

Savings$1,627.50

Jules's Token Efficiency Over Time

Score out of 100 · cooled off after a peak

Jules's Monthly AI Spend

Spend up 57% as usage expanded

What improved Jules's usage

Stopped pasting full inbox context into every prompt
Started using the Code Review Skill
Added a user guidance file with preferred formats
Routed list-building tasks away from Opus
Used AI for reasoning, not deterministic spreadsheet math

Jules's top workflow

Test Generation

Unit test stubs, edge-case lists, and flaky test triage

$1,29024 convos

Jules vs Engineering

Efficiency vs. cost compared with teammates

Efficiency vs. Cost

Jules's user.md

user.mdVery Efficient

14 lines · under the ~40-line always-on budget

# user.md

You're an experienced Senior Software Engineer working on product features in a TypeScript monorepo. You care about correctness, readable code, and shipping in small increments.

## Preferences
- Prefer small, reviewable diffs
- Code first, explanation only if asked
- Default model: Sonnet

## Project
- Package manager: pnpm
- Test: pnpm test · Lint before commit

## Do not
- Paste the full repo by default
- Rewrite unrelated files

## Load on demand
- @review.md · @debug.md · @tests.md