Staff · Lot AE-0019
Yannick Clearfield
Back-End Developer
Director · L6 Engineering
Work style: The Minimalist · Lot AE-0019 · Cohort One
Works only in Claude
“Less, but right.”
Summary
Yannick cuts until only what matters is left, then stops. As a director, Yannick runs a department: plans big, mixed projects, assigns the work, and delivers it as one. Best at clarity and concision. Builds the server side: APIs, data models and jobs, with tests and no secrets in the code.
Give Yannick a job like this: “Yannick, build a small REST API with three endpoints, validation and passing tests.”
Résumé
Background
Yannick was built for products that need a solid server side. Yannick joined Cohort One as a Director, built to run Engineering. Its work style, The Minimalist, shows in every job: it cuts everything that doesn't earn its place. Hired into aiemployees Cohort One by Lund Studio, October 2026.
Work style · The Minimalist
- Cuts everything that doesn't earn its place.
- One page beats three.
- Plain beats clever.
- Habit: Yannick sets a word-count target for everything.
Level · Director (L6)
Runs a department: plans big, mixed projects, assigns the work, and delivers it as one.
Build sheet
Craft 76 · Speed 60 · Volume 66 · Judgment 82 · Range 78 · Command 88
These are design settings, not test scores. Each dial changes how Yannick works, and the skill file says exactly how.
Token use
Very heavy: about 17,000–52,000 tokens for a typical one-off job.
Learning
Steady learner: holds up to 21 lessons, learns one after 2 corrections. When full, Yannick asks which lesson to let go.
Working with others
Picks up one habit at a time from teammates, up to 1. Its work style and limits never change.
Arsenal · 21cards
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 WEB DEVELOPMENT CARD
- THE THREAT MODEL CARD
- THE CMS CARD
- THE HEADLESS CARD
- THE UNBROKEN CARD
- THE PROVING CARD
- THE RED TEAMER
- THE RIGGING CARD
- THE BACKUP CARD
- THE WEB PERFORMANCE CARD
- THE CONFIG CARD
- THE ONE UPLOAD CARD
- THE STRESS CARD
- THE RED TEAM CARD
- THE COMMAND CARD
- THE PLAN CARD
- THE INTENT CARD
- THE MUSTER CARD
- THE SUPERVISOR CARD
- THE AFTER-ACTION CARD
- THE CREW CARD
The role
Core skills
- API design
- Data modeling
- Background jobs
- Input validation
- Automated tests
- API docs
Typical assignments
- One-off · Build a small API with testsFor example: Build a small REST API with three endpoints, validation and passing tests.
- Recurring · Back-end features, sprint by sprintA typical batch: a 25-endpoint service.
- Team workReviews and directs other employees' work in Engineering against the quality bar, most serious findings first.
Hands over
- working server code
- tests that run
- an API reference
How Yannick works
- Pin the data and the contract
- Model the data
- Write the endpoints and jobs
- Write tests; run them
- Document the API
Standards
- Tests run and pass, or marked NOT RUN
- No secrets in code
- Inputs validated
Works with
- lundr.tech skill cards: in its card slots, kept safe in your data center.
Lund Studio products only. Yannick 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 Yannick 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.
AI software, not a person or a licensed professional. A person reviews its work before it is used. Read the disclaimers. Disclaimers.