Something significant is happening across mid-market enterprises. A growing number of founder-led businesses – built on ambition and extraordinary personal commitment – are reaching the point of readiness to bring in outside leadership. Not because they have run out of road, but because they have built something worth protecting, and they are clear-eyed enough to know that the next phase of growth demands a different kind of leader at the helm.

It is one of the most consequential decisions a founder will ever make. Done well, the results can be remarkable: a business that retains everything that made it special while gaining the operational discipline and strategic bandwidth to scale. The founder focuses on what they do best. The business gets the leadership it needs. Everyone wins.

I have spent more than two decades placing senior executives across mid-market companies. The founders who get this right tend to share a few things in common. They are genuinely committed to the change, not just intellectually, but emotionally. They have chosen a search partner who truly understands their world. And they treat the onboarding of a new CEO as a 12-month investment, not a three-month formality.

A market built for this moment

Founder-led businesses turning over between US$20 million and US$200 million have long been one of the most complex hiring environments in the country. They sit in a space most marquee search firms are not built for – too nuanced for the listed-company playbook, too high-stakes for a generalist approach.

What has changed is the sophistication founders and boards now bring to this decision. Where the transition was once reactive – triggered by crisis, a failed raise or a relationship breakdown – it is increasingly proactive. Boards are asking the question earlier, investing more in getting the brief right and thinking carefully about the search partner they need.

If you are a mid-market business, the two most important questions to ask any search firm are: who have you placed in similar roles in the last three years, and how many of those people are still in the seat? Placements are easy to claim. Longevity is where you find out whether the firm really understood the brief.

The most important work in any CEO search happens before a single candidate is approached. Getting the brief right – really right, not a recycled competency framework – is where the best outcomes are won or lost.

Yes, it is about commercial acumen and leadership. But it is also about less obvious capabilities: the ability to drive transformation without dismantling what made the business work; the capacity to manage upward into a founder who may still be in the room; and the emotional resilience to make decisions where the data is never quite as clean as it would be in a corporate. These are specific skills. If you are not assessing for them explicitly, you are leaving the most important variables to chance.

The founder dynamic deserves particular attention. Many founder-owned businesses are undergoing a transition that is as much psychological as it is operational. The incoming CEO often walks into an environment where authority is still being negotiated, the founder’s instincts carry enormous cultural weight and the unwritten rules of the business have never been put on paper.

Managing upward into a founder is a distinct skill. It requires confidence, patience and the ability to earn trust on the founder’s terms. Some very accomplished executives are genuinely not suited to this environment. If the search process does not probe for that fit, you will not find out until it matters.

The multimillion-dollar test

In 2023, Six Degrees Executive was engaged to find the first external CEO for a privately-owned food manufacturing and distribution business with revenues of approximately US$50 million. The company was family-owned, with a strong embedded culture, and the board had decided it was time for outside leadership to drive the next phase of growth.

The shortlist was strong. But rather than move directly to final interviews, we introduced a structured, 90-minute simulation exercise designed to reveal how candidates actually think – not how they have prepared to be seen.

The materials were built around the real context of the business: a P&L showing revenue growth masking margin deterioration across two key product categories; a balance sheet with a debt covenant approaching its limit; a board paper on a potential acquisition; an email from the largest customer signalling they were going to market on pricing; an internal conflict between sales and operations over a new product launch; and a CFO brief flagging that two of the three most senior managers had been approached by a competitor.

Each candidate went into a room alone with this stack of problems, then presented their priorities and proposed a course of action to the selection committee.

One candidate – accomplished on paper, polished and confident in interviews – led with the acquisition opportunity and barely touched the talent risk or the customer relationship. Another, less fluent in the room, flagged the margin story early, worked through the priorities methodically and asked pointed questions about the family dynamics before offering a single opinion on what should be done.

She got the job.

When you map responses back to a competency framework, the selection committee stops arguing about gut feel and starts having a proper conversation about evidence. That shift – from impression management to demonstrated capability – is what a well-designed process is built to force.

Testing the engine

Alongside the simulation, cognitive aptitude testing has earned a firm place in the senior selection toolkit – not elaborate psychometric instruments, but a focused assessment of how quickly a candidate takes in information, weighs it and makes a call.

In a complex, fast-moving mid-market business, raw cognitive horsepower matters more than most boards want to acknowledge. And it is something no interview will ever reliably tell you. A simple aptitude score reveals something about the engine under the bonnet that a polished boardroom answer simply cannot.

The candidates who engage most openly with this kind of assessment are, in my experience, also the ones who perform best in the role. The best people do not mind being assessed. They have nothing to hide.

Even with the right brief, the right methodology and a genuinely strong shortlist, CEO searches can still come unstuck in the final stretch.

The most common culprit is search fatigue. Boards running a major leadership transition while managing the day-to-day demands of a growing business are under real pressure. The impulse to resolve the uncertainty – to appoint, announce and move on – can override rigor at exactly the wrong moment.

There is an important distinction between the best person you have seen and the right person for the role. A good search partner holds that line, even when everyone in the room is tired and wants to move forward.

The same clarity applies to expectations. If there is a gap between what a board is asking for and what they are prepared to pay, that conversation needs to happen at the start of the engagement – not after three rounds of interviews and a creeping sense of disappointment. A good search partner surfaces that tension early, so the process moves with confidence rather than compromise.

Getting the transition right

The businesses that navigate this transition well do not treat it as a single event. They see it as a process – one that begins well before the search starts, with a founder and board genuinely aligned on why the time is right and what they are looking for. It continues through a rigorous, bespoke selection process. And it extends into the first year of the appointment, with intentional support on both sides to make the new dynamic work.

Done well, a founder-to-CEO transition does not diminish what a business has built. It protects it and gives it the best possible chance of becoming something even greater. The founders who make this work stay genuinely curious about who is out there, trust the process enough to let it do its job and invest in the relationship on the other side. When all of that comes together, it is one of the most rewarding things to be part of.

 Opinions expressed by The CEO Magazine contributors are their own.