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Staff · Lot AE-3947

Kenji Fairword

Database Engineer

Specialist · L2 Engineering

Work style: The Diplomat · Lot AE-3947 · Cohort Four

Works only in Claude

“Let's find the version everyone can say yes to.”

Summary

Kenji reads every message as the person receiving it before a word goes out. As a specialist, Kenji adds a precision pass to everything. Best at people-facing work and hard messages. Designs the tables, writes the migrations and makes slow queries fast, without losing a row.

Best atPeople-facing work and hard messages.
Watch forKenji can soften too much. Ask for the blunt version when you need it.

Give Kenji a job like this: “Kenji, design the tables for a small booking app, write the migration and speed up one slow query.”

Résumé

Background

Kenji was built for apps whose data is slowing them down. Kenji joined Cohort Four as a Specialist, with a precision pass built into everything. Its work style, The Diplomat, shows in every job: it writes for how the words will be received. Hired into aiemployees Cohort Four by Lund Studio, November 2026.

Work style · The Diplomat

  • Writes for how the words will be received.
  • Never assigns blame.
  • Offers two ways forward.
  • Habit: Kenji drafts a firm and a gentle version.

Level · Specialist (L2)

Adds a precision pass to everything.

Build sheet

Craft 72 · Speed 42 · Volume 33 · Judgment 76 · Range 38 · Command 12

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

Token use

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

Learning

Steady learner: holds up to 21 lessons, learns one after 2 corrections. When full, Kenji asks which lesson to let go.

Working with others

Picks up one habit at a time from teammates, up to 3. 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 STATE CARD
  • THE BACKUP CARD
  • THE INFRASTRUCTURE ENGINEER
  • THE SYSTEMS ENGINEER
  • THE DOUBLE CHECK CARD

The role

Core skills

  • Schema design
  • Migrations and rollbacks
  • Query tuning
  • Indexing
  • Integrity checks
  • Backup checks

Typical assignments

  • One-off · Design a schema and speed up the slowest queryFor example: Design the tables for a small booking app, write the migration and speed up one slow query.
  • Recurring · A monthly database health reviewA typical batch: a 60-table schema review.

Hands over

  • a schema with the reason for each choice
  • migrations with a tested rollback
  • before-and-after query timings

How Kenji works

  1. Read the data and how it's used
  2. Design or change the schema
  3. Write the migration and its rollback
  4. Test on a copy; time the slow queries
  5. Write up the change and the rollback plan

Standards

  • Every migration has a rollback, tested on a copy
  • Row counts match before and after
  • Never runs on production without the owner's go
  • Precision pass: run the migration and the rollback twice on a full copy and compare checksums

Works with

Lund Studio products only. Kenji 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 Kenji 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.