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AI-Assisted Development

AI in Engineering Teams.

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Practise AI in Engineering Teams one question at a time. Answer out loud or in writing, get graded, and see exactly what you missed.

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What does it mean for a team to be "AI-native" rather than simply using AI tools?

The answer

An AI-native team designs its delivery system around safe, repeatable AI collaboration. Simply using AI means adding tools to an otherwise unchanged process.

Dimension Uses AI tools AI-native
Workflow Individuals prompt as needed Specifications, context, and tests guide agents
Control Existing review absorbs output Permissions and risk gates limit actions
Success Tool adoption or generated code Delivery quality, effort, and defects

People still own product choices, architecture, and released changes. The team maintains reusable instructions and evaluations, keeps project knowledge retrievable, and strengthens verification as generation becomes faster.

Example · what grading looks like
Why should AI-generated code be reviewed at least as carefully as human-written code?

“Mainly because it looks finished. What the model writes is tidy and confident, so it's tempting to skim it, but it doesn't know our system. It'll happily call a method that doesn't exist in the library version we're on, or handle the happy path and quietly break a business rule nobody told it about. So I read the whole diff against the ticket, look up any call I don't recognise, and try the edge cases myself before I approve it. My name's on the PR either way, so I treat it like code I wrote.”

Knew it

They have it: they name why fluent AI output invites false trust, check unfamiliar calls, diff against the ticket, and test edges themselves. Would be stronger with a word on checking security or auth handling specifically.

Missed: Doesn't mention checking authorization, secrets handling, or external calls specifically

Missed: Doesn't mention that generated tests need independent review since they can repeat the same mistake as the implementation


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What it covers

All 49 questions

Each on its own page

AI-native workflow foundations

What makes a team AI-native, vibe coding versus disciplined delegation, spec-first work and treating prompts and agent configs as engineering artifacts.

5 questions

  1. What does it mean for a team to be "AI-native" rather than simply using AI tools?
  2. What is the "prompt-and-pray" anti-pattern, and what does a healthier workflow look like?
  3. What is vibe coding, and when is it acceptable on an engineering team? Pro
  4. What is spec-first development, and why has it become more prominent in AI-assisted engineering? Pro
  5. Should prompts, agent configurations, and evaluation harnesses be treated as engineering artifacts? What does that mean in practice? Pro

Reviewing AI-generated code

Spotting plausible-but-wrong code, hallucinated APIs, over-engineering, off-idiom code and slop PRs, and setting how far to trust each change.

8 questions

  1. Why should AI-generated code be reviewed at least as carefully as human-written code?
  2. What is a hallucinated API, and how do you catch one before it causes damage?
  3. What is an "AI slop" pull request, and why do maintainers consider it harmful? Pro
  4. What does "plausible-but-wrong" code look like in practice, and why do experienced reviewers miss it? Pro
  5. Why do AI models tend to over-engineer, and how do you counter it? Pro
  6. How do you evaluate whether AI-generated code is consistent with your codebase's idioms, and why does it matter? Pro
  7. How would you build and maintain a taxonomy of AI-typical defects for your review process? Pro
  8. How do you calibrate how much to trust AI output for a given task, rather than applying uniform skepticism? Pro

Testing AI-written code

Using TDD as guardrails for agents, the pitfalls of generated tests, the test oracle problem, and property-based and mutation testing as checks.

5 questions

  1. How can test-driven development act as guardrails when you delegate coding to an AI agent?
  2. What are the most common pitfalls of letting an AI generate your test suite?
  3. How does property-based thinking improve testing of AI-generated code? Pro
  4. What is mutation testing, and why is it especially valuable for auditing AI-written test suites? Pro
  5. Explain the test oracle problem in the context of AI-generated tests, and how to mitigate it. Pro

Debugging with AI

Using a model as a talking rubber duck, for log and stack-trace analysis, and in hypothesis-driven debugging where evidence decides.

3 questions

  1. How does rubber-duck debugging change when the duck can talk back?
  2. How do you use an AI assistant effectively for log and stack-trace analysis? Pro
  3. Describe hypothesis-driven debugging with a model in the loop. Pro

Documentation with AI

The benefits and risks of AI-written docs, writing docs that agents consume, and keeping cheap-to-generate docs from going stale.

3 questions

  1. What are the benefits and risks of using AI to generate documentation? Pro
  2. What does it mean to write documentation for AI consumption, and what belongs in it? Pro
  3. AI makes docs cheap to produce but they still go stale. How do you keep documentation fresh? Pro

Large-scale changes and migrations

Choosing codemods or agents for large changes, verifying migrations in batches, and making huge refactor diffs reviewable.

3 questions

  1. When should a large-scale change be done with a codemod versus an agent, and how do the two combine? Pro
  2. How do you structure incremental verification for an AI-assisted migration across a large codebase? Pro
  3. What techniques make a very large AI-generated refactor diff actually reviewable? Pro

Security, licensing and governance

Security risks typical of AI code, licensing and IP, disclosure norms, usage policy, vendor selection and rolling AI out across an organization.

6 questions

  1. Should engineers disclose when a change was substantially AI-generated? What are the emerging norms? Pro
  2. What security issues are characteristic of AI-generated code, and how should security review adapt? Pro
  3. What should a company's AI usage policy for engineering actually cover? Pro
  4. What licensing and IP risks come with AI-generated code, and how do teams manage them? Pro
  5. How would you evaluate and select an AI coding tool or vendor for an engineering organization? Pro
  6. Design an organization-wide rollout of AI engineering practices for a 500-engineer company that balances velocity gains against risk. Pro

Review capacity and verification at scale

Adapting review norms to higher PR volume, risk-tiered review gates, the verification bottleneck and a lifecycle built around cheap generation.

4 questions

  1. Pull request volume doubled after your team adopted coding agents. How should review norms change? Pro
  2. Design a review gate system for AI-generated changes in an organization shipping hundreds of PRs a week. Pro
  3. When agents can generate far more code than humans can review, how do you manage the verification bottleneck? Pro
  4. Generation is now cheap and verification is the bottleneck. How should the software development lifecycle be re-architected around that inversion? Pro

Engineering metrics with AI

Why velocity metrics mislead once AI writes code, which outcome metrics still hold up, and how to design metrics that resist Goodhart's law.

3 questions

  1. Why do traditional velocity metrics become misleading once AI generates much of the code? Pro
  2. Which engineering metrics remain meaningful in an AI-heavy workflow, and how do you instrument them honestly? Pro
  3. How do you design an engineering metrics system that resists Goodhart's law specifically in an AI-amplified environment? Pro

Architecture and long-term codebase health

Which architecture decisions humans must own, and controlling tech debt, duplication and churn to keep a codebase understandable over years.

3 questions

  1. AI assistants are linked to rising code duplication and churn. How do you measure and control tech-debt accumulation? Pro
  2. In an AI-heavy organization, which architecture decisions must humans own, and how do you operationalize that boundary? Pro
  3. Under sustained high AI churn, how do you preserve long-term codebase health and human comprehension over multiple years? Pro

Skills, learning and hiring

Learning with AI without shallow knowledge, avoiding skill atrophy, growing juniors, choosing skills to delegate, and hiring and interviewing when AI is in use.

6 questions

  1. What is your strategy for learning an unfamiliar stack or codebase with AI without ending up with shallow knowledge? Pro
  2. What do interviewers actually probe when they ask about your AI-assisted workflow, and what distinguishes a strong answer? Pro
  3. How does an experienced engineer avoid skill atrophy while working heavily with AI? Pro
  4. How should teams onboard and develop junior engineers when AI handles most traditional junior tasks? Pro
  5. AI can now complete most take-home assignments and coding screens. How would you redesign engineering hiring to get real signal? Pro
  6. Looking ahead, which engineering skills should teams still develop deeply versus deliberately delegate to AI, and how do you decide? Pro
Practice · Questions

All questions

Showing of 49
Beginner 11
01

What does it mean for a team to be "AI-native" rather than simply using AI tools?

Beginner ·

Answer it yourself first - out loud, or typed below.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Last attempt -

Your answer

Re-explain

An AI-native team designs its delivery system around safe, repeatable AI collaboration. Simply using AI means adding tools to an otherwise unchanged process.

Dimension Uses AI tools AI-native
Workflow Individuals prompt as needed Specifications, context, and tests guide agents
Control Existing review absorbs output Permissions and risk gates limit actions
Success Tool adoption or generated code Delivery quality, effort, and defects

People still own product choices, architecture, and released changes. The team maintains reusable instructions and evaluations, keeps project knowledge retrievable, and strengthens verification as generation becomes faster.

Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

Why there's no diagram: “”

The interactive diagram is below the answer - jump to diagram ↓ · Below it, the related concept . Jump to it ↓

Related concept

Tailored explanation · switch back to · ·
What should the new diagram focus on?
How well did you know this?
AI:

02

Why should AI-generated code be reviewed at least as carefully as human-written code?

Beginner ·

Answer it yourself first - out loud, or typed below.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Last attempt -

Your answer

Re-explain

AI-generated code deserves at least normal scrutiny because fluent syntax can hide false assumptions, invented interfaces, and insecure patterns. It can also widen the change beyond what was asked.

  • Read the complete diff and compare its behavior with the requirement.
  • Verify unfamiliar APIs and dependencies against authoritative sources for the version you use.
  • Test boundary cases and failures. Then check authorization, the handling of secrets and other data, and every external call.
  • Review generated tests independently, because they may repeat the implementation's mistake.

The submitter owns every line. Set review depth from the change's impact and reversibility, not from how quickly or confidently the code appeared.

Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

Why there's no diagram: “”

The interactive diagram is below the answer - jump to diagram ↓ · Below it, the related concept . Jump to it ↓

Related concept

Tailored explanation · switch back to · ·
What should the new diagram focus on?
How well did you know this?
AI:

03

What is the "prompt-and-pray" anti-pattern, and what does a healthier workflow look like?

Beginner ·

Answer it yourself first - out loud, or typed below.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Last attempt -

Your answer

Re-explain

Prompt-and-pray means sending a vague request, accepting a large result, and hoping it works. It skips controlling the scope and gathering evidence.

A healthier workflow looks like this:

  1. Define the goal and the acceptance criteria. Add the relevant context, constraints, and non-goals.
  2. Ask for a plan when the work is nontrivial, then correct faulty assumptions.
  3. Make one small, reviewable batch and inspect its complete diff.
  4. Run focused checks before continuing, and require approval for risky commands.
  5. Refine the specification or context when results are wrong.

The assistant drafts and explains work. The engineer controls direction, permissions, and the evidence required for acceptance.

Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

Why there's no diagram: “”

The interactive diagram is below the answer - jump to diagram ↓ · Below it, the related concept . Jump to it ↓

Related concept

Tailored explanation · switch back to · ·
What should the new diagram focus on?
How well did you know this?
AI:

04

How can test-driven development act as guardrails when you delegate coding to an AI agent?

Visual

Beginner ·

Answer it yourself first - out loud, or typed below.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Last attempt -

Your answer

Re-explain
Visual

Test-driven development gives an agent an executable contract and a short feedback loop, making delegated work narrower and easier to inspect.

  1. Review a test that expresses one required behavior and confirm it fails for the right reason.
  2. Ask for the smallest implementation that makes the test pass.
  3. Protect tests from unapproved edits so the agent cannot weaken the contract.
  4. Add boundaries, invalid inputs, and failure paths, then rerun focused checks.
  5. Inspect the implementation and repeat with the next behavior.

A green suite proves only the specified cases, so human review and broader verification still matter.

Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

Why there's no diagram: “”

The interactive diagram is below the answer - jump to diagram ↓ · Below it, the related concept . Jump to it ↓

Related concept

Tailored explanation · switch back to · ·
What should the new diagram focus on?
How well did you know this?
AI:

05

What are the most common pitfalls of letting an AI generate your test suite?

Visual

Beginner ·

Answer it yourself first - out loud, or typed below.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Last attempt -

Your answer

Re-explain
Visual

Generated tests often mirror the implementation instead of the requirement, so a polished suite and high coverage can still provide weak protection.

  • Shared mistake: Code and assertions can encode the same wrong interpretation.
  • Weak signal: Tautologies, excessive mocks, and snapshots may never detect realistic faults.
  • Missing risk: Boundaries, invalid input, permissions, and failure paths are easy to omit.
  • False confidence: Tests may pass even after the behavior they claim to protect is broken.

Start expected outcomes from an independent specification. Review assertions, add integration coverage at important boundaries, and use mutation testing where its cost is justified.

Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

Why there's no diagram: “”

The interactive diagram is below the answer - jump to diagram ↓ · Below it, the related concept . Jump to it ↓

Related concept

Tailored explanation · switch back to · ·
What should the new diagram focus on?
How well did you know this?
AI:

06

What is a hallucinated API, and how do you catch one before it causes damage?

Beginner ·

Answer it yourself first - out loud, or typed below.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Last attempt -

Your answer

Re-explain

A hallucinated API is an invented method, option, or endpoint whose plausible name makes it look real. Models invent whole packages the same way.

  • Let the compiler, type checker, or language server flag unknown symbols.
  • In dynamic code, run a focused experiment instead of trusting an explanation.
  • Check unfamiliar calls in the official documentation for the version the project installs.
  • Review a package's registry entry, publisher, and source before installing it. Invented names are a supply-chain risk, because an attacker can publish a real package under one.
  • Keep new dependencies behind human approval.

When sources conflict, trust the executable project and authoritative documentation over the model's confidence.

Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

Why there's no diagram: “”

The interactive diagram is below the answer - jump to diagram ↓ · Below it, the related concept . Jump to it ↓

Related concept

Tailored explanation · switch back to · ·
What should the new diagram focus on?
How well did you know this?
AI:

07

How does rubber-duck debugging change when the duck can talk back?

Beginner ·

Answer it yourself first - out loud, or typed below.

How should your speech become text?

Listening… your words appear above as you speak - tap Stop when you're done.

Recording · cr - tap Stop & transcribe when you're done.

Transcribing with AI…

Voice:

Keep going - a few more words and AI can grade it.

Last attempt -

Your answer

Re-explain

A talking rubber duck can question your assumptions, propose competing hypotheses, and suggest experiments. A silent duck only forces you to explain the bug aloud.

Start with observed facts, expected behavior, and one testable hypothesis. Ask the assistant what evidence would distinguish that idea from the alternatives, then run the smallest useful experiment.

Guard against anchoring on a fluent story. Share only relevant, redacted logs, and verify claims in code, documentation, or runtime output. The assistant widens the search for causes, but direct observation decides which explanation survives.

Rewriting in plainer words…

This answer doesn't lend itself to a diagram - it reads best . No credits were charged.

Why there's no diagram: “”

The interactive diagram is below the answer - jump to diagram ↓ · Below it, the related concept . Jump to it ↓

Related concept

Tailored explanation · switch back to · ·
What should the new diagram focus on?
How well did you know this?
AI:

08

What is an "AI slop" pull request, and why do maintainers consider it harmful?

Part of Pro
09

Should engineers disclose when a change was substantially AI-generated? What are the emerging norms?

Part of Pro
10

What are the benefits and risks of using AI to generate documentation?

Part of Pro
11

What is vibe coding, and when is it acceptable on an engineering team?

Part of Pro
Intermediate 20
12

Pull request volume doubled after your team adopted coding agents. How should review norms change?

Part of Pro
13

What does "plausible-but-wrong" code look like in practice, and why do experienced reviewers miss it?

Part of Pro Visual
14

Why do AI models tend to over-engineer, and how do you counter it?

Part of Pro
15

How does property-based thinking improve testing of AI-generated code?

Part of Pro Visual
16

What is mutation testing, and why is it especially valuable for auditing AI-written test suites?

Part of Pro Visual
17

How do you use an AI assistant effectively for log and stack-trace analysis?

Part of Pro
18

Describe hypothesis-driven debugging with a model in the loop.

Part of Pro Visual
19

When should a large-scale change be done with a codemod versus an agent, and how do the two combine?

Part of Pro Visual
20

How do you structure incremental verification for an AI-assisted migration across a large codebase?

Part of Pro
21

What does it mean to write documentation for AI consumption, and what belongs in it?

Part of Pro
22

AI makes docs cheap to produce but they still go stale. How do you keep documentation fresh?

Part of Pro
23

How do you evaluate whether AI-generated code is consistent with your codebase's idioms, and why does it matter?

Part of Pro
24

What security issues are characteristic of AI-generated code, and how should security review adapt?

Part of Pro
25

What should a company's AI usage policy for engineering actually cover?

Part of Pro
26

What licensing and IP risks come with AI-generated code, and how do teams manage them?

Part of Pro
27

How would you evaluate and select an AI coding tool or vendor for an engineering organization?

Part of Pro
28

Why do traditional velocity metrics become misleading once AI generates much of the code?

Part of Pro Visual
29

What is spec-first development, and why has it become more prominent in AI-assisted engineering?

Part of Pro
30

What is your strategy for learning an unfamiliar stack or codebase with AI without ending up with shallow knowledge?

Part of Pro
31

What do interviewers actually probe when they ask about your AI-assisted workflow, and what distinguishes a strong answer?

Part of Pro
Expert 18
32

Design a review gate system for AI-generated changes in an organization shipping hundreds of PRs a week.

Part of Pro Visual
33

AI assistants are linked to rising code duplication and churn. How do you measure and control tech-debt accumulation?

Part of Pro
34

Which engineering metrics remain meaningful in an AI-heavy workflow, and how do you instrument them honestly?

Part of Pro
35

How does an experienced engineer avoid skill atrophy while working heavily with AI?

Part of Pro
36

How should teams onboard and develop junior engineers when AI handles most traditional junior tasks?

Part of Pro
37

Explain the test oracle problem in the context of AI-generated tests, and how to mitigate it.

Part of Pro Visual
38

In an AI-heavy organization, which architecture decisions must humans own, and how do you operationalize that boundary?

Part of Pro
39

When agents can generate far more code than humans can review, how do you manage the verification bottleneck?

Part of Pro
40

What techniques make a very large AI-generated refactor diff actually reviewable?

Part of Pro Visual
41

How would you build and maintain a taxonomy of AI-typical defects for your review process?

Part of Pro
42

Should prompts, agent configurations, and evaluation harnesses be treated as engineering artifacts? What does that mean in practice?

Part of Pro
43

How do you calibrate how much to trust AI output for a given task, rather than applying uniform skepticism?

Part of Pro
44

Design an organization-wide rollout of AI engineering practices for a 500-engineer company that balances velocity gains against risk.

Part of Pro
45

Generation is now cheap and verification is the bottleneck. How should the software development lifecycle be re-architected around that inversion?

Part of Pro
46

Under sustained high AI churn, how do you preserve long-term codebase health and human comprehension over multiple years?

Part of Pro
47

AI can now complete most take-home assignments and coding screens. How would you redesign engineering hiring to get real signal?

Part of Pro
48

How do you design an engineering metrics system that resists Goodhart's law specifically in an AI-amplified environment?

Part of Pro
49

Looking ahead, which engineering skills should teams still develop deeply versus deliberately delegate to AI, and how do you decide?

Part of Pro

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