The Uncomfortable Truth About Senior Hiring

When a senior hire doesn’t work out, boards and hiring managers instinctively look at the Resume. “Did we miss something in their experience? Was there a gap in their technical knowledge? Should the second interview have been more rigorous?”

Almost always, the answer is no.

Landmark research by Leadership IQ, tracking more than 5,000 hiring managers over three years, revealed a finding that should reshape how every business hires at the senior level:

89% of hiring failures are due to attitudinal and behavioural reasons — not technical skill.

Only 11% are due to a lack of technical ability.

Let that sink in. Nine out of every ten senior hires who fail do so because of how they showed up, not what they knew.

And yet, most executive hiring processes still spend 90% of their time evaluating the 11%.

At Alexander Executive Search, we’ve built our entire methodology around correcting this imbalance. This post explains why the skills-first mindset persists, what actually predicts long-term success, and how to build an assessment process that reflects the reality of senior leadership.

Why We Keep Hiring for Skills

The over-emphasis on technical ability is deeply understandable. It exists for four powerful reasons:

1. Skills are easy to measure

A Resume is a tidy inventory. Years of experience, technologies used, projects delivered, revenue managed, team size led — all quantifiable, all comparable.

Behaviour, by contrast, feels subjective. Without the right tools, hiring managers avoid it because it’s harder to defend in a decision meeting.

2. Skills feel objective and “safe”

When a hire fails, “they had all the right credentials” sounds like a reasonable defence. “We felt they had the right leadership style” doesn’t.

Hiring for skills is career-safe. Hiring for behaviour requires conviction.

3. Job descriptions are written by technical stakeholders

Most JDs are drafted by the departing incumbent’s manager or the HRBP. They list tasks and tools, not leadership behaviours. The interview process then mirrors the JD — and behaviour never gets a proper seat at the table.

4. Interviews reward performance, not prediction

Senior candidates are, by definition, articulate, confident and well-rehearsed. A traditional interview measures how well someone interviews — not how they will actually behave under pressure on day 87.

What Actually Predicts Executive Success

The Leadership IQ study identified five behavioural reasons new hires fail. In order of frequency:

Look at the top four. Every single one is invisible on a Resume and easily faked in a first interview.

This is why the world’s most disciplined executive hiring processes have quietly shifted from skills-verification to behavioural prediction. The question is no longer “Can they do the job?” — because at senior level, that answer is almost always yes. The question is “Will they thrive doing it, here, with us, for the next five years?”

The Four Behavioural Dimensions That Matter Most at Executive Level

In engineering, civil engineering and technology leadership, we consistently see four behavioural dimensions separate the leaders who compound value from those who quietly derail:

🧠 1. Cognitive Style Under Pressure

Does the candidate default to analysis, action, consensus or authority when the stakes rise? Match this to the actual pressure profile of your business — a scaling infrastructure firm needs a different default than a mature engineering consultancy.

🤝 2. Interpersonal Orientation

How do they read a room? Do they build alliances or issue directives? Are they generous with credit or protective of it? This determines whether they’ll unify your senior team or fragment it within six months.

🎯 3. Motivational Drivers

What actually gets them out of bed? Autonomy, mastery, status, security, purpose, wealth? Motivational mismatch is one of the fastest routes to a “quiet quit” at VP or C-suite level — and one of the least discussed.

🔄 4. Adaptability and Coachability

The number-one behavioural predictor of executive success. Senior leaders who can’t take feedback don’t grow — and neither do the teams around them. In a market defined by AI, geopolitical shifts and shifting delivery models, this trait is no longer optional.

Why the Traditional Interview Fails to Reveal Behaviour

Even well-run interview panels routinely miss behavioural red flags. Here’s why:

• Anchoring bias: The strongest Resume in the pile sets the mental benchmark before the person walks in the room.
• Similarity bias: Panels unconsciously favour candidates who resemble themselves — reinforcing existing team blind spots.
• Recency bias: The last answer of the interview disproportionately shapes the overall impression.
• Rehearsal effect: Senior candidates have delivered the “tell me about a time” story 200 times. You’re hearing a polished product, not a genuine response.
• Halo effect: One impressive achievement (a big brand, a famous project) colours the entire assessment.

None of these can be fixed by “interviewing better.” They can only be corrected by adding a structured, objective behavioural layer to the process — one that runs alongside the interview, not inside it.

The Alexander Executive Search Answer

This is exactly why our 8-point candidate assessment treats behaviour as a first-class citizen — not an afterthought.

Every candidate we present is evaluated across:

• Behavioural assessment — validated profiling of personality, drivers and work style
• Key competency responses — evidence-based examples tied to a defined success profile
• Candidate introduction — voice, tone and self-awareness in the candidate’s own words
• Consultant executive summary — sector-informed judgement on fit, risks and strengths
• Verified references — proactively obtained from people who have actually led or worked alongside the candidate

The CV is still there — but it arrives last, as a supporting document. By the time you read it, you already understand the person, their behaviour, their motivations, and how they’re likely to lead inside your business.

The result: our clients interview fewer candidates, make stronger first-time hires, and retain 96% of the leaders we place beyond 12 months — well above the industry average of roughly 70%.

That 26-point retention gap isn’t a marketing claim. It’s what happens when you stop hiring for the 11% and start hiring for the 89%.

Five Questions to Pressure-Test Your Own Hiring Process

Before your next senior hire, ask your leadership team:

1. What percentage of our interview time is spent on behaviour vs. technical ability? If it’s under 40% on behaviour, you’re statistically hiring in the danger zone.
2. Do we have a defined behavioural success profile for this role — or just a job description?
3. Are we using a validated behavioural assessment tool, or relying on gut feel?
4. Have we ever rejected a technically excellent candidate on behavioural grounds? If not, your process isn’t really screening for it.
5. When our last senior hire failed, was it because of skills — or behaviour? Be honest.

If those answers are uncomfortable, they’re pointing you exactly where the value is.

The Bottom Line

The data is unambiguous. 89% of executive hiring failures are behavioural. And yet, most hiring processes still behave as if the opposite were true.

The firms that will win the next decade of leadership hiring aren’t the ones with the biggest talent networks or the flashiest technology. They’re the ones with the discipline to assess how someone leads — not just what they’ve led.

Skills get someone hired. Behaviour determines whether they succeed.

➡️ Ready to hire leaders who actually stay and thrive? Speak to a partner at Alexander Executive Search — precision hiring for engineering, civil engineering and technology leaders worldwide.