The most expensive mistake a company can make often looks impeccable on paper. The right degree, the right years in the right positions, the right keywords. The candidate is hired with enthusiasm, and six months later the piece still doesn't fit the puzzle.
This isn't an exception. It's a pattern. And it costs far more than most people expect.
What a bad hire actually costs
When a hire doesn't work out, the visible bill is only the tip. The recruitment process has to be run again, training is lost, and a position sits empty or half-filled for months. On top of that comes what doesn't show up in the accounts: a team that loses momentum, colleagues covering the gap, and a manager spending their energy trying to make something work that fundamentally doesn't fit.
Estimates vary, but a bad hire typically costs between half and a full year's salary once you count everything. For a middle manager, that quickly runs into six figures. That's the kind of mistake you can't afford to repeat, and certainly not to repeat on the same basis.
The CV tells you what. Not how.
A CV is typically an overview of what a person has worked on and which tasks they've handled. It doesn't tell you how they do it, and it's almost always the “how” that determines whether a hire succeeds.
Two candidates can have the same CV: the same title, the same results, the same years in the industry. But one thrives in independent, goal-driven work, while the other draws energy from close collaboration and building relationships. Put the wrong person in the wrong role and they both fail, not because of competence, but because of mismatch.
The CV doesn't capture motivation, collaboration style, or how someone handles conflict. And that's exactly where most hires go wrong.
“She just seemed like someone who fit in”
Most recruitment decisions are still made on gut feeling. A good conversation, a likeable presence, a sense of chemistry. The problem isn't that intuition is always wrong. The problem is that it can't be explained, shared, or tested.
When a gut feeling hits the mark, you don't know why. When it misses, you don't know either, and so you repeat the mistake at the next hire. Worse still: we often hire people who resemble ourselves, and end up building teams that lack precisely the strengths we don't have ourselves.
The right profile is the one that fits the role and the team
The right candidate isn't the one with the most lines on their CV. It's the one whose natural strengths, motivation, and working style match what the role requires and what the team is missing.
That requires knowing what the role actually needs. Should the position drive results through to completion, or should it hold a team together? Should it challenge assumptions, or should it persuade and sell the idea to the outside world? When you can describe a role in terms of strengths rather than only tasks, you can, for the first time, evaluate candidates on what actually determines success.
From gut feeling to a decision you can stand behind
A structured personality profile doesn't remove human judgment, it qualifies it. Instead of “I have a good feeling about this,” you can say: “the role requires drive and insight, the candidate's strengths sit exactly there, and it complements the team she's joining.”
That's a decision you can justify to yourself, to your colleagues, and to your leadership.
The perfect CV is easy to spot. The right profile requires knowing what you're looking for. Without data, you're just one more person with an opinion about who fits in.