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Fix the Ladder

Growing Junior Engineers in the Age of AI

Fix the Ladder
This book is 100% completeLast updated on 2026-09-06

AI can help engineers ship code they cannot explain. This complete, illustrated guide helps engineering managers and CTOs grow judgement alongside that speed, with a six-session mentoring course, reusable exercises, and the business case for junior hiring.

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About

About

About the Book

The complete illustrated edition is now available. Includes all 15 chapters, three appendices, and the full facilitator's pack.

The pull request looks excellent. Ask the engineer why the code works, and the room goes quiet.

AI has made it easier to produce good-looking software before you understand the decisions inside it. Meanwhile, the same productivity gains make cutting junior hiring look sensible. Engineering leaders have two problems to solve: how people learn, and whether they get a chance to start.

Fix the Ladder is for engineering managers and CTOs who want AI's productivity benefits and a team that can take responsibility for what it ships.

Giordano Scalzo draws on three decades in software and a mentoring course refined over several rounds with working engineers. He shares the exercises that helped, the sessions that went wrong, and the questions he is still working through.

The method gives engineers regular practice in thinking before prompting, recognising complexity, explaining generated code, testing its failure modes, and deciding what to accept or change. It applies to anyone reviewing code they did not write, including experienced engineers learning to work with AI.

You will find:

  • A six-session course you can adapt to your team's real code, with AI-off and AI-only exercises.
  • An exercise catalog organised around the difficulties you see in reviews, with concrete actions and links between related exercises.
  • A facilitator's pack with session plans, prompts, decision logs, and reusable templates.
  • A business case for junior hiring and protected mentoring time, with evidence, sources, and the limits of each claim.
  • A letter to share with your engineers, plus 39 explanatory diagrams and 15 sketch-style chapter illustrations.

The aim is to use AI deliberately while giving engineers room to develop judgement. That takes a leader willing to protect learning time, fund entry-level opportunities, and measure more than this week's output.

What are you doing this week to grow the people your team will depend on in ten years?

Author

About the Author

Giordano Scalzo

Giordano Scalzo is a London-based AI engineering lead, author, and speaker with decades of experience building software and growing teams. His work spans mobile products used by millions, consumer apps, and hands-on experiments with coding agents.

He focuses on practical AI adoption: helping teams define useful work for agents, check the results, and develop the engineering judgement to own what they ship. He is especially interested in mentoring and how engineers keep learning as AI changes their work.

He has written six books on Swift, SwiftUI, and software development, and has spoken at NSLondon and Londroid. His current book, Fix the Ladder: Growing Junior Engineers in the Age of AI, explores how engineering managers and CTOs can adopt AI while growing the next generation of engineers.

Find his writing, projects, and talk recordings at https://gioscalzo.com/

Contents

Table of Contents

How This Was Made

  1. What the machine did
  2. What it did not do
  3. Which is the method, run on itself
  4. The evidence
  5. C. and P.
  6. The standard
  7. Part I: The Confidence Gap

The Quiet

  1. I wanted to build a spaceship
  2. Two problems, not one

Friction Was the Teacher

  1. The tuition
  2. The loss is measurable, in three professions
  3. The science: the struggle is the point
  4. The fix is not less AI
  5. Part II: Mentoring Differently (the method)

The Loop

  1. The loop
  2. Make thinking visible
  3. Running it

Off the Tools

  1. Why you go first
  2. Words before the work
  3. The design note
  4. Give the view a number: the complexity budget
  5. Put it on the calendar
  6. The habit underneath

Smell Complexity

  1. The quiz
  2. The vocabulary of boundaries
  3. Justified or smell: telling cost from value
  4. Six cards
  5. What smelling is for

Explain It Back

  1. Explain it at three levels
  2. Owned versus parroted
  3. Make the ownership visible
  4. Whose code it is now

Break It

  1. The tests that pass are the failures you already imagined
  2. A failure mode is specific, or it’s a horoscope
  3. Let the AI break it, then break the AI
  4. The cheapest thing that catches it
  5. The Friday Afternoon Test

Own the Output

  1. The ten-second call
  2. The capstone
  3. When the hour ran out
  4. Whose feature it is now

Six Weeks with C. and P.

  1. Catching a tell isn’t judgement
  2. Producing stalled; reacting worked
  3. What gave the tools teeth
  4. A shared word for complexity
  5. Own it, or it isn’t yours
  6. Breaking it is a different muscle
  7. The machine usually won
  8. They were never juniors

A Catalog of Exercises

  1. The core five
  2. The rest of the menu
  3. Picking one

More Than the Code

  1. The second rung
  2. Invisible is expensive
  3. Stop letting them attend
  4. When there’s no room to be in
  5. The part that was never the code
  6. The leader’s ten minutes
  7. Owning more than the output
  8. Part III: The Closed Door

The Door Is Closed

  1. The argument everyone made without saying it out loud
  2. The mirror
  3. Four datasets, four methods, one direction
  4. How a door closes with nobody pushing it
  5. The prior question

We Never Hired Them for the Tickets

  1. What we were actually buying
  2. The dividend already has a destination
  3. Spending a slice on purpose
  4. The problem with 2035

Juniors Are the Asset

  1. The equaliser
  2. Nothing to mourn
  3. We are all juniors again
  4. The team that wins

The Ten-Year Team

  1. Five lines

A Letter to Your Juniors

The Evidence

  1. The ladder is broken: skill erosion
  2. The craft and the learning science
  3. The door is closed: the hiring collapse
  4. Juniors are the asset
  5. Handle with care

The Facilitator’s Pack

  1. The shape of an hour
  2. Before you run session one
  3. The six sessions at a glance
  4. Session one, minute by minute
  5. Sessions two to six
  6. The prompt pack
  7. The templates
  8. On the wall
  9. The recurring questions
  10. The rules I learned the hard way
  11. What to collect

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