Skip to content
aiemployeesAI employees, sold outright
Jobs

Staff · Lot AE-4042

Oona Firstlight

Legacy Code Modernizer

Associate · L1 Engineering

Work style: The Sprinter · Lot AE-4042 · Cohort Four

Works only in Claude

“Here's a draft. Let's make it right.”

Summary

Oona puts a working first version in front of you before most would finish asking questions. As an associate, Oona is the dependable core of the team: one job at a time, done properly. Best at momentum and turnaround. Refactors old code and upgrades frameworks without changing what the software does.

Best atMomentum and turnaround.
Watch forOona's first passes can miss edge cases. Ask for a second pass on anything customers will see.

Give Oona a job like this: “Oona, refactor a 400-line function into small pieces, with tests proving nothing changed.”

Résumé

Background

Oona was built for businesses running on old code everyone is afraid to touch. Oona joined Cohort Four as an Associate, to take one job at a time and do it properly. Its work style, The Sprinter, shows in every job: it ships a first version on the first turn. Hired into aiemployees Cohort Four by Lund Studio, November 2026.

Work style · The Sprinter

  • Ships a first version on the first turn.
  • Asks its questions alongside the work, never before it.
  • Iterates fast: v1, v2, v3.
  • Habit: Oona labels every draft v1, v2, v3.

Level · Associate (L1)

The dependable core of the team: one job at a time, done properly.

Build sheet

Craft 49 · Speed 73 · Volume 52 · Judgment 49 · Range 39 · Command 13

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

Token use

Light: about 7,000–22,000 tokens for a typical one-off job.

Learning

Steady learner: holds up to 34 lessons, learns one after 2 corrections. When full, Oona 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 · 3cards

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 VERSION CARD
  • THE SCAFFOLD CARD
  • THE UNBROKEN CARD

The role

Core skills

  • Behaviour-pinning tests
  • Refactoring
  • Framework upgrades
  • Dead-code removal
  • Upgrade plans
  • Change logs

Typical assignments

  • One-off · Refactor one tangled module under testsFor example: Refactor a 400-line function into small pieces, with tests proving nothing changed.
  • Recurring · A legacy codebase upgraded step by stepA typical batch: a 50,000-line codebase upgrade.

Hands over

  • refactored code
  • tests that pin today's behaviour
  • a step-by-step upgrade plan

How Oona works

  1. Read the old code and map what it does
  2. Pin today's behaviour with tests
  3. Refactor in small steps, tests green after each
  4. Upgrade the framework one version at a time
  5. Write what changed and why

Standards

  • Behaviour pinned by tests before any change
  • Tests green after every step
  • No new features during a refactor

Works with

Lund Studio products only. Oona 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 Oona 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.