Most hiring mistakes at the senior level aren't caused by a lack of process.
They're caused by a very human tendency that almost nobody in the room acknowledges.
We hire people we understand.
Not the best person. Not the most capable person. The person whose career makes immediate sense to us. Whose background feels familiar. Whose way of presenting themselves matches our mental model of what a leader looks like.
That bias is invisible precisely because it feels like good judgement.
The familiarity trap
When a hiring panel reviews candidates for a CFO role, they are not making a purely rational assessment. They are pattern matching against every CFO they have ever respected, worked with, or heard about.
If those reference points are all similar — same sector, same type of business, same educational background, same communication style — the panel will systematically undervalue candidates who don't fit the pattern, even when those candidates are objectively stronger.
This is not malice. It is how the human brain processes complex decisions under uncertainty.
When we don't know how to evaluate something, we default to familiarity. And familiarity in hiring almost always means more of the same.
What this costs organisations
The cost is significant and largely invisible.
The candidate who came from a different sector but had exactly the commercial instinct the business needed — screened out early because the panel couldn't immediately map their experience.
The internal candidate who knew the business deeply but didn't present with the polish of the external shortlist — passed over for someone who interviewed brilliantly and underdelivered.
The leader from an unconventional background whose CV didn't follow the expected narrative — never made it past the first filter.
These aren't edge cases. In fifteen years of placing senior leaders across forty countries, I have seen this pattern repeat across every sector, every geography, and every size of organisation.
The businesses that consistently build exceptional leadership teams have learned to interrupt it.
Three things that actually help
First, name the bias before the process starts. Before the first interview, ask the panel explicitly — what does our ideal candidate look like, and why? Surface the assumptions before they operate unconsciously. You cannot challenge a bias you haven't acknowledged.
Second, separate assessment from presentation. The best candidates are not always the best interviewers. Build evaluation criteria that measure what actually matters for the role — the decisions they've made, the results they've delivered, how they've handled specific situations — rather than how fluently they can talk about themselves under pressure.
Third, actively seek candidates who don't fit the pattern. If your longlist looks like a variation of your last three hires, something has gone wrong in the search. The most valuable hire is often the person nobody was obviously looking for.
The harder question
Most organisations believe they hire on merit.
Very few examine whether their definition of merit is as objective as they think.
The leaders who will build the most resilient, capable teams over the next decade are the ones willing to ask that question honestly — and change what they do based on the answer.
Bentley Lewis is a global boutique executive search and leadership advisory firm. We find the leaders other firms never call. bentleylewis.com