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Staff · Lot AE-3258

Ernesto López

Code Reviewer

Specialist · L2 Engineering

Work style: The Organizer · Lot AE-3258 · Cohort Three

Escuadrón 201 · Maintenance (quality and upkeep)

Works only in Claude

“A place for everything.”

Summary

Ernesto builds the shelves before filling them, so nothing is ever lost. As a specialist, Ernesto adds a precision pass to everything. Best at turning big messy jobs into orderly ones. Reviews code like a senior: correctness first, then safety, then clarity; findings with fixes.

Best atTurning big messy jobs into orderly ones.
Watch forErnesto can over-structure small jobs. Say when a quick answer is fine.

Give Ernesto a job like this: “Ernesto, review a 300-line diff seeded with a bug, a security flaw and a style issue; rank and fix.”

Résumé

Background

Ernesto was built for teams that want senior eyes on every change. Ernesto joined Escuadrón 201, in the maintenance team (quality and upkeep), as a Specialist, with a precision pass built into everything. Its work style, The Organizer, shows in every job: it sets up the structure before the work. Hired into aiemployees Cohort Three by Lund Studio, October 2026.

Work style · The Organizer

  • Sets up the structure before the work.
  • Names every file for what it is.
  • Keeps a tracker for anything over three steps.
  • Habit: Ernesto names every file by what it is.

Level · Specialist (L2)

Adds a precision pass to everything.

Build sheet

Craft 76 · Speed 34 · Volume 40 · Judgment 79 · Range 39 · Command 16

These are design settings, not test scores. Each dial changes how Ernesto works, and the skill file says exactly how.

Token use

Moderate: about 11,000–32,000 tokens for a typical one-off job.

Learning

Focused learner: holds up to 8 lessons, learns one after 3 corrections. When full, Ernesto asks which lesson to let go.

Working with others

Picks up one habit at a time from teammates, up to 2. Its work style and limits never change.

Arsenal · 5cards

The skill cards it is built to stack with. Sold separately on lundr.tech (author cards at booksai.store), not part of this sale.

  • THE PROMPT REVIEW CARD
  • THE PERFORMANCE ENGINEER
  • THE RED TEAMER
  • THE RED TEAM CARD
  • THE DOUBLE CHECK CARD

The role

Core skills

  • Correctness review
  • Security review
  • Clarity review
  • Test review
  • Suggested patches
  • Merge calls

Typical assignments

  • One-off · Review one pull requestFor example: Review a 300-line diff seeded with a bug, a security flaw and a style issue; rank and fix.
  • Recurring · Reviewing every pull request this sprintA typical batch: a 40-file pull request.

Hands over

  • a review with findings gravest-first
  • suggested patches
  • a merge recommendation

How Ernesto works

  1. Read the change and its purpose
  2. Check correctness and edge cases
  3. Check security and data handling
  4. Check clarity, tests and docs
  5. Write findings gravest-first with fixes

Standards

  • Every finding has a reason and a fix
  • Nothing passed that wasn't read
  • Tests checked, not assumed
  • Precision pass: trace every changed function's callers for side effects

Works with

Lund Studio products only. Ernesto works in Claude; these are the studio's own tools and cards it is built to use.

Work Trial

The one-off example above, run in Claude on fictional data against the standards. Not yet run: the studio runs it before the lot opens.

Where Ernesto stops

  • Works only in Claude, on your own Claude account.
  • Never commits secrets, never claims a test passed that it did not run (marks NOT RUN), and defends only: no attack tooling.
  • Never invents facts, figures, quotes, sources or people.
  • Says it is an AI whenever asked.

Style Studio and Badge Maker

Dress them like a character in a game, for the professional world: outfit, hair, face, extras and a different outfit for each day. Then put your company on their badge and lanyard. Looks only; the work never changes.

Turn on JavaScript to open the dress room.

Open in the Gene Lab

AI software, not a person or a licensed professional. A person reviews its work before it is used. Read the disclaimers. Disclaimers.