How to Hire a CFO or Finance Leader for a Growing Business

Hiring a senior finance leader is one of the most consequential decisions a growing business will make. Get it right and you gain a genuine co-pilot: someone who can tell you not just where the business has been, but where it is going and what to do about it. Get it wrong and you end up with an expensive reporting function that gives you confidence when you should be worried, and worry when you should be moving.

Most founders and CEOs know they need a strong finance person. Fewer are clear on what that actually means for their stage of business, or how to tell a great candidate from one who looks great on paper. This guide is an attempt to close that gap.

What a CFO actually does at different stages

The title "CFO" means radically different things depending on where a company sits in its journey. At a Series A startup, the CFO might be doing everything from running payroll to building the first financial model for investors. At a PE-backed business preparing for exit, they are running a programme of financial due diligence while managing banking relationships and leading a team of fifteen. These are almost entirely different jobs.

At the early stage, the finance function is largely about getting the basics right: accurate accounts, reliable cash flow visibility, and a financial model that actually connects to operational reality. The person doing this work needs to be hands-on, comfortable with ambiguity, and genuinely interested in the commercial side of the business, not just the numbers.

As the business grows, the finance leader's role shifts. They spend less time in the detail and more time translating numbers into decisions: which markets to prioritise, how to structure pricing, when to raise capital, and what the unit economics say about the business model. By the time a company is at £20m or more in revenue with multiple business lines, the CFO should be spending most of their time as a genuine strategic partner to the CEO, not as the person reconciling the month-end P&L.

The best CFOs are not primarily finance people. They are business people who happen to understand finance very well.

Understanding this evolution is crucial before you write a job description or talk to a single candidate. If you hire someone whose instinct is to control and report, but what you need is someone who can challenge, model, and enable, you will not get what you need no matter how strong their technical credentials are.

Controller, Head of Finance, or CFO: which do you need?

This is the question most businesses skip, and it causes enormous problems. The three titles represent genuinely different roles, different skill sets, and different seniority levels. Hiring a CFO when you need a Controller means overpaying for someone who will be bored and underused. Hiring a Controller when you need a CFO means having a very tidy set of books and no strategic guidance whatsoever.

A Financial Controller is responsible for the integrity of the financial records. They own the month-end close, the management accounts, the audit, the statutory filings, and the financial controls framework. This is a critically important role, but it is fundamentally about accuracy and process, not strategy. Controllers are essential; they are not CFOs.

A Head of Finance sits between the two. They typically manage a small team, have a broader commercial remit than a Controller, and may take on some strategic finance work such as budgeting, forecasting, and investor reporting. For many businesses at the £3m to £15m revenue stage, this is exactly the right hire: someone senior enough to own the finance function, but not so senior that they are underutilised.

A CFO is a board-level or near-board-level hire. They are responsible not just for the finance function but for using financial insight to drive the direction of the business. A genuine CFO should be in the room when major strategic decisions are being made, not informed about them afterwards. They should have a view on M&A, capital structure, commercial strategy, and risk management at the business level, not just the accounting level.

The honest question to ask yourself before hiring: what is it that I actually need this person to do for the business? If the answer is primarily about getting the books right and managing the audit, you need a Controller. If the answer involves growth strategy, investor relations, or major financial decisions, you need a CFO.

The number keeper vs the business partner

Within any seniority level, there is a spectrum. At one end you have the steward: someone whose primary concern is accuracy, compliance, and risk avoidance. At the other end you have the business partner: someone who is genuinely curious about the commercial decisions the business is making, and who uses financial insight to shape those decisions rather than just report on them.

Both types have value. A steward is exactly what you want managing the accounts payable function. A business partner is what you want in the CFO seat. The problem is that many candidates who operate at the steward end of the spectrum present themselves, often sincerely, as business partners. They talk about "working closely with the business" and "being commercially minded," but in practice they produce reports and wait to be asked questions rather than generating insight and bringing it to the table unprompted.

The distinction shows up most clearly in how candidates talk about their past work. A steward will describe what they produced: the board pack, the cash flow model, the budget process. A business partner will describe what changed as a result of something they spotted or recommended: the pricing decision that improved margin by four points, the acquisition they advised against based on unit economics, the covenant they renegotiated before it became a problem.

One framework that helps: ask yourself whether the candidate is describing their inputs or their outcomes. Inputs are the work. Outcomes are the impact. You want someone who consistently thinks in terms of outcomes.

What to look for beyond the technical credentials

The technical baseline matters. For a CFO role at a serious business, you would typically expect a professional accounting qualification (ACA, ACCA, CIMA, or equivalent), experience in a comparable business context, and a track record of operating at the level the role requires. But the technical credentials are a filter, not a selector. They tell you who is eligible, not who is right.

Beyond the basics, here is what actually differentiates great finance leaders:

• Commercial curiosity. Do they understand the business model deeply, or do they understand the financial representation of the business model? These are different things. The best finance leaders are genuinely interested in why the business works, not just in recording what happened.
• Communication at every level. Finance leaders who can only talk to other finance people are limited. The best ones can take a complex financial concept and make it clear to a salesperson, a board member, and a bank. Watch how they explain things in the interview itself.
• Comfort with imperfect information. In a growing business, you rarely have perfect data. Great finance leaders can make good decisions with incomplete information, rather than waiting for the perfect model before they will commit to a view.
• Willingness to push back. A CFO who only tells you what you want to hear is not a CFO; they are an expensive nodder. You need someone who will tell you clearly when the numbers say the plan does not work, and who has the confidence to hold that view under pressure.
• Experience at scale on both sides. Ideally, you want someone who has worked in a business at your current stage and at your target stage. Someone who has only ever worked in large corporate finance will struggle with the ambiguity and resource constraints of a growing company. Someone who has only worked in small businesses may not have built the skills you will need in eighteen months.

What the best CFO interviews actually test for

Most CFO interviews are too narrow. They check technical knowledge, run through career history, and maybe ask a case study question about a previous transaction. What they miss is the thing that actually matters: how does this person think when the stakes are high and the information is incomplete?

A few interview approaches that work well:

The "what would you do first" question. Present the candidate with a short description of your business: revenue, EBITDA, team size, current finance function, and key challenges. Then ask them what they would spend the first thirty days doing and why. This question reveals their instincts about what matters, their ability to prioritise, and whether they are thinking about your business or reciting a generic onboarding framework.

The "tell me about a decision you influenced" question. Ask for a specific example of a major business decision where their financial analysis or advice changed the outcome. Push for detail: what was the decision, what was the initial direction, what did they find, and what actually happened? Vague answers are a red flag. Great finance leaders can tell these stories precisely, because they care about the impact they have.

The "what would you disagree with us on" question. Share something about your business strategy or financial position and ask them where they would push back if they were in the role. This tests intellectual confidence, preparation, and whether they are genuinely engaging with your business or just trying to say the right things to get the offer.

The numbers review. For senior finance hires, consider sharing a simplified version of your management accounts or model and asking them to walk you through what they see. You are not testing whether they can read a P&L. You are testing what they notice, what questions they ask, and whether they think like a CFO or like a Controller.

Red flags you should not ignore

Finance is a function where the wrong hire can hide for a long time before the damage becomes visible. By the time the problem is obvious, it is usually expensive to fix. Here are the warning signs to take seriously:

• They describe processes, not outcomes. If every answer to "what have you achieved?" is about a process they improved or a system they implemented, rather than a commercial outcome they influenced, you are likely looking at a steward, not a business partner.
• They have never operated at your scale. Someone whose entire career has been in FTSE-listed businesses will often struggle in a company with a lean team, no shared services, and a board that changes its mind. The skills are genuinely different.
• They are uncomfortable with ambiguity. Used occasionally, phrases like "we would need to model that properly before I could say" are fine. Used constantly, they signal someone who cannot function without perfect information, which is almost never available in a growing business.
• They cannot name specific numbers from their previous roles. A finance leader who cannot tell you the revenue, EBITDA margin, or cash conversion of the businesses they have worked in is not commercially engaged enough. These numbers should be at the fingertips of anyone who genuinely owned a finance function.
• Their references all emphasise technical skills. Technical skill is a given. If every referee talks about what a great accountant someone is but says little about their commercial impact or their ability to work with the wider business, that is telling you something important.

How to assess strategic thinking in a risk-focused role

This is the hardest part of hiring a finance leader, because the nature of the job is to manage risk, and yet the best ones have a genuinely different relationship with risk than the average accountant. They are not reckless; they understand risk precisely enough to know when taking it is the right call, and when it is not.

The way to assess this is to look for evidence of decisions they enabled, not just decisions they prevented. It is easy to find finance leaders who can tell you about a deal they killed, a contract they stopped, or a cost they cut. These are important skills. But the most valuable finance leaders can also tell you about the investment they made the case for, the market they helped the business enter, or the pricing change they pushed through because the margin analysis said it was the right move.

Ask directly: "Tell me about a time you argued for something commercially rather than against it." If they struggle to answer, or if every commercial story they tell is about protecting the business rather than growing it, you may have a very good Controller in front of you rather than the CFO you need.

Strategic thinking also shows up in time horizon. Ask them how they think about the trade-off between short-term financial performance and long-term investment. Their answer will tell you whether they are optimising for this year's P&L or for the value of the business in five years. Both mindsets have their place; you need to know which one you are buying.

What happens when you hire the wrong finance leader

The consequences of a bad finance hire at a senior level are disproportionately large. In the best case, you waste twelve to eighteen months and a significant salary before you realise the fit is wrong. In the worst case, the damage is structural: a finance function built around the wrong priorities, financial reporting that obscures rather than illuminates, and a board that has been given false confidence about the business's trajectory.

We have seen businesses that hired a CFO when they needed a Controller: the CFO was bored, disengaged, and left within a year, and the company had to restart the search with less money and less time. We have seen the opposite too: businesses that hired a Controller when they needed a CFO, scaled without any strategic financial input, made a series of poor capital allocation decisions, and ended up in a much weaker position than their trading performance justified.

The safest investment you can make in this hire is time and clarity up front. Be honest about what stage you are at, what you actually need, and what kind of person will thrive in your specific context. A CFO who was brilliant at a PE-backed logistics business may be entirely wrong for a fast-growing SaaS company, even if the title and salary are identical. The work is different. The skills required are different. The fit matters enormously.

If you are not sure what you need, talk to someone who has placed finance leaders across multiple contexts before you start the search. The conversation will save you more time than it takes.

Frequently Asked Questions

When should a growing business hire a CFO?

Most businesses benefit from a dedicated finance leader once they reach around £5-10m in revenue, are preparing for investment or acquisition, or when the founder is spending significant time on financial decisions rather than the business. Before that point, a strong Financial Controller or Head of Finance is often the more appropriate hire.

What is the difference between a CFO and a Financial Controller?

A Financial Controller focuses on accuracy: producing reliable accounts, managing the month-end close, and maintaining financial controls. A CFO focuses on strategy: using the numbers to influence decisions about growth, capital allocation, risk, and the long-term direction of the business. Many companies need the Controller first, and the CFO later.

What are the biggest red flags when hiring a finance leader?

Watch out for candidates who can only talk about process and reporting rather than commercial outcomes; who have never operated in a business smaller or faster-moving than their current role; who are vague about specific decisions they influenced; or who show discomfort with ambiguity. A great CFO should be able to tell you clearly what they changed and why it mattered.

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