A practical guide for founders considering a fractional COO
A fractional chief operating officer (COO) is a senior operator who takes on the COO role in a scaling business for a fraction of the time – and a fraction of the cost – of a full-time hire. A fractional COO works closely with the founder or CEO, owns the operating rhythm of the business, and is accountable for outcomes rather than just hours. They are a subject-matter expert and an executor, not a consultant handing over a deck. The work is real, the accountability is real, and the measure of success is whether the business is in a better place than when they arrived.
This guide answers the top-of-funnel question – what is a fractional COO? – and then the more useful follow-up question that most founders only get to once they’ve understood the first: when does a founder actually need one? It’s written from inside the work. I’ve been running as a fractional COO since 2018, I only take on one business as a fractional COO at a time, and the patterns below are the ones I see over and over in scaling UK and US businesses between £1m and £15m in revenue. For the wider view of the role, the fractional COO guide is the pillar for this article.
What a fractional COO actually is
The short definition: a fractional COO is a senior executive who works closely with a CEO or founder to deliver their vision for the business, holding part of a formal leadership role rather than the whole of it. The contribution is measured on value, impact and outcomes, not on days in the diary.
The longer definition – the one I think is more useful if you’re trying to decide whether to bring one in – is that a fractional COO is the glue for a scaling organisation. They hold things together. They provide the operating cadence the business needs in order to move faster without breaking. They relentlessly execute the business plan. They hold the leadership team to account. They take the work the founder shouldn’t be doing and make it somebody else’s job to do it well.
The difference between a fractional COO and a consultant sits in the accountability. A consultant tells you what to do. A fractional COO owns doing it. The difference between a fractional COO and a full-time COO sits in the time commitment, not in the quality or seniority of the work.
What does a fractional COO actually do?
Day-to-day varies by business, but there are common patterns I see almost everywhere.
Translates vision into an operating plan. The founder sets the direction. The fractional COO turns that direction into a plan with clear goals, clear owners and clear timelines – and then holds people to it. Most scale-ups don’t lack strategy. They lack the operating layer that turns strategy into week-by-week execution.
Builds and improves the operating system. From hiring processes to delivery workflows to reporting cadences, a fractional COO designs the systems that allow the business to scale without the founder being involved in every decision. This is where a lot of the long-term value sits – in the business operating system the COO installs, which keeps running after the engagement ends.
Leads the leadership team. A fractional COO usually runs the operating rhythm of the business – leadership meetings, quarterly planning, cross-functional alignment – so that the senior team starts working as a unit instead of a collection of departmental silos.
Troubleshoots what’s broken. Scaling businesses hit new problems constantly, and a fractional COO has almost always seen those problems before in previous roles with previous businesses. That pattern recognition lets them diagnose and fix things faster than somebody meeting each of them for the first time.
Owns the projects that matter. Whether it’s a technology migration, a new market launch, an organisational restructure or an M&A integration, a fractional COO takes accountability for the initiatives that move the business forward – delivering transformation at pace without pulling the founder into the weeds.
Coaches and develops the leadership team. A good fractional COO builds capability as they go. Mid-level leaders become better at their jobs. The operational maturity of the whole organisation lifts.
“Simon is a highly experienced and grounded leader who demonstrated he was capable of walking into the business and quickly making a difference. When I first met him I hadn’t fully appreciated that he is a strong business thinker, capable of taking apart a complex problem and putting it back together to solve it. I’d happily recommend him as a fractional COO and scale-up advisor for businesses in need of the guiding hand of a calm and insightful leader.”
Peter O’Brien, CEO, Hidden Creative
When does a founder actually need a fractional COO?
The founders I start fractional COO conversations with are almost never asking what is a fractional COO? – they already have a rough idea. What they’re really asking is am I the sort of founder who needs one? Here are the five patterns I see most often.
1. You’re the bottleneck
Decisions queue up waiting for you. The team won’t move without your input. You look at your week and realise almost all of the substantive thinking about the business is happening inside your head, not inside your leadership team. This is the classic founder bottleneck – and it’s usually where a fractional COO conversation starts. The fix isn’t to work harder. The fix is to install the operating layer that lets the leadership team make decisions confidently without you.
2. The business has outgrown how you run it
What got you to £3m is not going to get you to £15m. The informal coordination that worked when everyone sat in the same room breaks when you’re 40, 60, 90 people. You can feel the fragmentation – duplicated work, missed handovers, decisions getting re-litigated – but you don’t have the bandwidth to design a better way of working while the business is still running.
3. You have a leadership team that isn’t operating like one
Your senior people are good at their functions but the group isn’t adding up to more than the sum of its parts. Cross-functional problems never quite land. Meetings feel like status updates. Nobody is pushing each other. A fractional COO can make a leadership team function as a team, which is very different from making each individual perform their role.
4. You’re facing a specific transition you haven’t done before
A restructure. A product pivot. An international expansion. An acquisition or integration. The installation of a leadership team for the first time. These are moments where pattern recognition is worth an enormous amount, and where the cost of learning on the job is measured in months of business momentum.
5. You’re trying to work yourself out of the business
Some founders are preparing for an exit. Some are trying to step back from day-to-day operations so they can focus on strategy, on product, or on a new venture. Either way, the job is the same: build a business that runs without you. A fractional COO is often the best structural investment a founder can make toward founder-independence.
When a fractional COO isn’t the right call
Honesty is worth more than the fee. A fractional COO is the wrong call if any of the following apply.
You’re pre-product-market fit. Early-stage founders need to be in everything. Installing an operating layer before you’ve worked out what the business is will create process for problems you don’t have yet and slow you down.
You don’t really want to devolve decisions. A fractional COO is only as effective as the air cover the founder gives them. If what you actually want is for somebody to execute your instructions rather than to hold the operating role alongside you, hire a programme manager, not a fractional COO.
You need a full-time COO. Some businesses are beyond the point where fractional makes sense. If the business is 150+ people, if the operating cadence needs a seven-day-a-week owner, or if the leadership structure requires the COO in the exec group on a permanent basis, go full-time. A good fractional COO will tell you when you’ve reached that point and will often help you recruit their full-time replacement.
You have a discrete project, not an ongoing operational gap. If what you need is a defined piece of work – a restructure, a transformation, an M&A integration – with a clear start and finish, a consultant COO engagement is the right shape, not a fractional COO on an ongoing retainer.
Fractional COO vs full-time COO: how to think about the trade-off
A full-time COO at the seniority level most scaling businesses need will cost somewhere in the region of £150–£250k base in the UK, plus bonus, equity and on-costs. That’s roughly £200–£320k all-in annually. On top of that you’re buying a recruitment process, a notice period to hire, a notice period to fire, and the risk that the first person you hire isn’t the right one – which is a common outcome at this level of seniority in scale-ups.
A fractional COO is typically engaged on a monthly retainer that represents a fraction of that cost. You get access to somebody who has already been through the transitions you’re trying to navigate, installed for the specific period when the business needs that level of operational leadership. When the moment passes, or when the business is ready for a full-time hire, the engagement ends cleanly.
The trade-off isn’t really about cost. It’s about commitment, time in the business, and fit for the stage. Full-time makes sense once the COO role is a permanent part of the exec structure. Fractional makes sense for the phase of scaling where you need the seniority and pattern recognition now, but the business isn’t yet ready to carry the full-time role.
“Simon worked with me at ThinkTribe during a pivotal time for the business. He helped us rethink our structure, sharpen our strategy, and confidently navigate the transition from founder-led to a more scalable, leadership-driven model. His calm, insightful approach brought clarity where there was complexity and left us better equipped for the next phase of growth.”
Deri Jones, Founder and CEO, ThinkTribe
How a fractional COO engagement actually works
Every fractional COO works slightly differently. The shape of my own engagements is: I only work with one business as a fractional COO at any one time, so the business I’m in gets real focus rather than being one of five clients on a rotation. Engagements typically run for six to twelve months in the first instance, with a clear onboarding phase (understanding the business, diagnosing the operating gaps, agreeing the priorities with the founder), followed by an execution phase where the real operating work happens, followed by a handover phase where I design myself out of the role.
Through the whole thing I’m working to install the B³ framework® – the founder-plus-leadership-plus-business-operating-system model I developed from fifty-plus founder conversations and from my own twenty-six-year operator career running agencies and scaling a listed technology group from £31.5m to £83m. The goal is always the same: a business that runs without needing me in it, built on a foundation that holds after I’ve gone.
Next step. If the patterns in this guide feel familiar, the best next move is a conversation – not a sales call. I’ll listen, ask the questions that most need asking, and if I can help I’ll tell you how. If fractional COO isn’t the right call, I’ll tell you that too, and usually point you toward what is.
