Fractional GTM operator or growth agency: which one your B2B SaaS needs

A growth agency sells capacity: hands on a channel, fast. A fractional GTM operator sells ownership: someone inside your team who designs the go-to-market motion, runs it, and answers for the number. Most companies that ask this question need one of the two first, and sometimes the other after. Tom Meijer, founder of Caugia (Paris), is the operator kind, and regularly works with an agency on the same number.

What a growth agency is good at

Outbound sequences, content, paid acquisition, sometimes SDR capacity as a service. An agency staffs a channel in weeks, brings tooling and playbooks it has run before, and scales up or down with the retainer. When the motion is known and the constraint is volume, that is exactly the right purchase.

The limits are structural, not a question of quality. An agency optimises the channel it is paid for, not the funnel end to end. It works from the brief it receives, so a weak brief produces busy weeks and a flat number. And its incentive is the retainer, which rewards activity you can see over decisions that shrink the scope. None of this is a reason not to hire one; it is the reason someone in your team must own the plan the agency executes.

What a fractional GTM operator does

One senior person inside the team, one to three days a week, in ninety-day blocks. The operator designs the motion and writes it down: the target list with named doors, the plays and the qualified bar, the funnel on paper with stage criteria, the weekly rhythm. Then runs it with your team and AI where it holds up, held to one number agreed before the start and reviewed every week.

The limit is equally structural. An operator is not volume. Tom Meijer does not replace your SDRs, your outbound agency or your recruiter; the team keeps the hands, and when the motion needs more hands than the team has, an agency is often the right next purchase. Caugia takes two engagements at a time.

Three questions that decide it

Do you know your motion? If you can name the segment, the entry channel, the message, the qualified bar and the owner of each funnel step, you have a motion, and an agency can add volume to it. If any of those is an opinion rather than a written rule, buy ownership first.

Who owns the number? An agency owns its channel metrics: meetings booked, leads delivered, cost per lead. Someone has to own pipeline and revenue across all channels. If that person exists and has the time, an agency reports to them. If not, the operator is that person for the duration.

Does your team keep the hands? An operator runs the motion with the people you have. If you have no SDR, no marketer and no founder time, an operator alone will design a motion nobody executes; add hands, from a hire or from an agency, on the operator’s brief.

Both, in the right order

The sequence that works: the operator first when the motion is unclear, to write it down and prove it on a small target list within ninety days; the agency second, to add volume to plays that already convert. The operator briefs the agency, sets the qualified bar it is paid on, and holds it to the same weekly number as the team. The sequence that fails: an agency hired to find the motion by trial, billed monthly while the company learns what it should have decided first.

What it costs

Agencies price on a monthly retainer, usually with a minimum term; the total for a year is easy to compute and the return depends entirely on the brief. Caugia does not publish a rate card: an engagement is scoped and priced per company, per ninety-day block, after a scoping conversation and a written scope. What is public is the form: one to three days a week, a number agreed up front, a decision on day thirty, sixty and ninety.

Who is behind Caugia

Tom Meijer, founder of Caugia and fractional GTM operator based in Paris. Dutch, a decade building GTM systems in B2B SaaS: Contentsquare from startup to a $5.6B valuation, then Greenly’s AI-first revenue architecture. He designs the motion, runs it with the team one to three days a week in ninety-day blocks, and holds it to the number agreed up front. Two engagements at a time, in English and French, on site in Paris or remote.

Questions people ask

Should a B2B SaaS company hire a fractional GTM operator or a growth agency?

Buy what you lack. If the motion is written down and the constraint is volume, a growth agency adds hands to a channel fast. If nobody can write the motion on one page, or nobody owns the number across channels, buy ownership first: a fractional GTM operator who designs the motion and runs it with your team, then an agency for volume once the plays convert. Tom Meijer at Caugia (Paris) works that way, one to three days a week, and briefs the agency on the same number.

Can a fractional GTM operator manage our existing agency?

Yes, and it is one of the most useful things an operator does. The operator writes the brief, sets the qualified bar the agency is measured on, reviews the agency’s output in the same weekly rhythm as the team, and decides on day thirty, sixty and ninety whether to scale, fix or stop the channel. The agency keeps the hands; the operator keeps the number.

Is a fractional GTM operator the same as a consultant?

No. A consultant analyses and recommends; the implementation comes back to you. An operator designs the motion and runs it inside the team, accountable to a number reviewed every week, and leaves the working documents behind: target list, plays, funnel on paper, weekly note, ninety-day plan.

Does Caugia run outbound or campaigns for us?

No. Tom Meijer does not replace your SDRs, your outbound agency or your recruiter. He designs the motion, sets the bar, runs the weekly rhythm and uses AI for research, list building, enrichment and first drafts; the calls, the demos and the relationships stay with your team. When the motion needs more hands than the team has, an agency on his brief is the usual answer.

How does an engagement with Caugia start?

With a scoping conversation, then a written scope: the motion to build or rebuild, the number it is held to, the cadence and the owners. It starts when one of the two slots is open. The first weeks of an engagement go to reading the motion with your team: where revenue is made and lost, what is missing, what is broken. Then the plan, with owners, which Tom runs with you.

Two slots · Paris · English and French

Further reading: go-to-market experts for B2B SaaS · what a fractional GTM operator is · how to design a go-to-market motion · lead-to-revenue conversion in B2B SaaS · how a fractional GTM engagement works