Hiring Engineers in the Age of AI

AI Hiring Challenges: How to Tell Real Engineers From Polished Answers

Hiring engineers has always been difficult, but the rise of AI tools like ChatGPT has changed the game completely.
Candidates can now generate clean, structured answers in seconds. Many sound impressive in interviews, yet struggle when they face real production challenges.

Why AI Makes Hiring Harder

AI tools make it easier for candidates to prepare and polish their answers. That is not bad by itself, but it creates new problems for hiring managers.

  1. Polished answers, shallow reasoning.
    A candidate might produce elegant code or a solid architectural diagram but still lack the ability to reason about trade-offs, debugging, or long-term maintainability.
  2. Predictable responses.
    AI-trained candidates often use similar phrases, patterns, and buzzwords. Their answers feel rehearsed instead of thoughtful.
  3. Weak connection to real-world work.
    Real engineering involves ambiguity, failure, and trade-offs. Traditional interview questions rarely test for that.
  4. Hidden evaluation risks.
    Automated tools and AI helpers can also increase bias or give unfair advantages if the process is not designed carefully.

The core issue is simple: we start rewarding confidence instead of competence. That is why hiring now requires a completely different lens.

Our Philosophy: Test the Process, Not the Polish

We do not forbid AI use during interviews. Instead, we observe how candidates use it.
Strong engineers treat AI as an assistant, not a crutch. They read, analyze, and improve its output.
Weak engineers copy what it gives them and hope for the best.

Here is what we look for:

  • Do they pause to think before answering?
  • Can they explain why a certain approach works?
  • Do they adapt when the situation changes?
  • Are they comfortable admitting uncertainty?

Real engineers reason in context. They use AI intelligently, but they never outsource their judgment.

How We Ask Better Questions

To separate real thinkers from memorized responses, we design questions that add friction and mimic real work. Here are some examples.

1. Add realistic constraints

“A zero-day vulnerability forces you to rotate JWT signing keys immediately. Thousands of users still have active sessions. How do you deploy new keys, keep users online, and revoke the compromised ones?”

This question tests reasoning about migration, backward compatibility, and operational safety.

2. Force trade-off thinking

“You said you want zero downtime, but you also need to change the database schema. How would you handle that?”

The goal is not a perfect answer. The goal is to see how the candidate balances performance, risk, and practicality.

3. Test temporal reasoning

“Walk me through the first 15 minutes after you detect an incident. What do you check first? What comes next?”

Good engineers think sequentially and prioritize. Weak ones describe theory without a timeline.

4. Explore edge cases

“Your autosave feature causes double submissions under load. How would you profile and fix it without breaking audit logs?”

This shows who can handle messy production scenarios.

5. Change conditions mid-question

Introduce new information or constraints halfway through the discussion. The right candidates adjust immediately. The wrong ones freeze.

What We Watch Beyond the Words

Even with good questions, the real signal often comes from small behavioral cues.

Red flags:

  • Answers that sound too polished or full of buzzwords
  • Instant replies that leave no thinking time
  • Eyes fixed on one spot, as if reading from another screen
  • No self-correction when new data appears

Green flags:

  • Natural pauses before speaking
  • Use of real examples, metrics, or logs
  • Clarifying questions when something is unclear
  • Visible reasoning or small course corrections mid-answer

We look for thinking patterns, not perfect scripts.

Keep Interviews Close to Real Work

A common mistake in hiring is designing interviews that have nothing to do with the actual job.
Our engineers face scaling issues, debugging sessions, and trade-off decisions every day. So our interviews should test for the same.

Here is what helps:

  • Define the real skills you care about: latency, scalability, reliability, maintainability.
  • Use real data: logs, metrics, small debugging tasks, or system design diagrams.
  • Avoid random puzzles or riddles unless they reflect actual work.
  • Train interviewers to look for reasoning, not just correct syntax or code output.

When interviews feel like real engineering, both sides win.

Balancing Speed and Depth

We know that hiring needs to move fast. But depth should never disappear.
Here is how we balance both:

  • Smarter pre-screens. Short, focused tasks that test explanation, not perfection.
  • Parallel rounds. Run technical and culture interviews in the same week to save time.
  • Structured debriefs. After each interview, evaluators compare notes on reasoning and adaptability, not just final results.
  • Involve active engineers. People who write code daily can better judge how someone will perform in real projects.

This way we maintain quality while keeping the process efficient.

The Cost of Ignoring This

When companies keep hiring for polish instead of substance, problems appear fast.

  • Fragile systems that work in demos but fail in production
  • High technical debt and low morale among stronger engineers
  • Talent churn, as true builders get frustrated by shallow peers
  • A reputation for poor hiring that spreads among candidates

Hiring mistakes compound over time. Fixing them early is much cheaper than fixing code later.

Our Final Advice

At Coding Partners, our hiring philosophy is simple. We want engineers who can reason, adapt, and own their work.
AI can help them write faster, but it cannot replace their judgment.

If you are a tech leader, ask yourself:

  • Are your interview questions revealing real reasoning or just repetition?
  • Do you test how people think under uncertainty?
  • Are you rewarding polish, or insight?

True engineering strength shows up not in perfect answers, but in how people think when things break.

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Vitalii Lutskyi
Operating Partner