The first marketer your startup actually needs
Most seed and Series A B2B startups either execute without strategy or strategize without execution. I embed as your fractional founding marketer, and builds the marketing system from zero.
What is a Founding Marketer?
A Founding Marketer is the first real marketing hire at an early-stage B2B startup. Unlike a fractional CMO who provides strategic leadership at scale, or a generalist who executes within an existing system, a Founding Marketer builds the system itself. ICP definition, channel prioritisation, martech stack, messaging architecture, first experiments. Seedli offers this as a fractional engagement: two to three days per week, embedded in your team, minimum three months.
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THE PROBLEM
You hired an agency. They delivered a brand deck and a channel strategy. Six months later, you’re still running experiments yourself, still unsure who your real ICP is, still waiting for the system to start working. It didn’t fail because the strategy was wrong. It failed because no one was responsible for making it run.
Or you went the other way: a generalist to execute. They ran the ads, managed the social, kept things moving. But they had no framework for what to prioritise, no view of the full funnel, no ability to build something that would survive them. You have activity without direction.
The problem is not the people you hired. It is the role you were hiring for. There is a gap between “marketing consultant” and “full-time CMO” that most seed-stage companies fall into and stay in for longer than they should. That gap has a name: the founding marketer.
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THE WORK
I embed as your first real marketing hire, not to advise from the outside, not to manage a team you don't have yet, but to build the GTM foundation. ICP definition, channel prioritisation, martech stack, first experiments, tracking infrastructure. The deliverable is not a deck. It is a system that runs after I leave.
Engagements are fractional: two to three days a week. Enough to be present in the work, not so much that you are paying for a full-time salary without full-time output.
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RESULTS FROM THE WORK
€1B private consulting group • 10K employees
Mantu
I built the social media function from scratch: 0 to 5-person team, 73 dead channels audited and rationalized, LinkedIn grown from 10K to 118K. Survived 3 CDOs in 2 years without missing a beat.
U.S Nonprofit • 10+ employees
Women as One
Built Women as One’s full marketing function from zero: hired the first in-house marketer, managed 8 vendors across 6 specialties. The system ran when I wasn’t in the room.
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QUESTIONS
Frequently asked
What is a founding marketer for a startup?
A founding marketer is the first strategic and executional marketing hire at an early-stage startup. This person builds the GTM foundation from zero: ICP definition, positioning, messaging architecture, channel selection, marTech stack, and first experiments. They are not a fractional CMO (too senior for this stage) and not a marketing manager (too junior to build the system). The role appears on job boards under several titles: founding marketer, founding growth marketer, first marketing hire. The function is the same: build the GTM system before it exists. I offer this role on a fractional basis for seed and Series A B2B companies.
How is a founding marketer different from a fractional CMO?
A fractional CMO provides strategic leadership and is most useful once a marketing function already exists. A founding marketer builds that function before it exists. At seed stage, the work is not managing or directing, it is building ICP definitions, setting up the marTech stack, running first experiments, and creating the SOPs that a future team will operate. These are different roles at different stages.
When should a B2B startup hire a founding marketer?
When the founder is doing marketing themselves, or has a junior hire with no framework to work from. When there are product-market fit signals but no functioning GTM system. When the company has tried agency work or project-based consultants and still does not have a working pipeline. Typically at seed or early Series A stage.
What does a founding marketer deliver in 90 days?
A working GTM foundation: a documented ICP with firmographic and behavioural criteria, one to two prioritised channels, a minimal martech stack (CRM, attribution, capture, analytics), a messaging architecture built from customer interviews, and the first ten experiments with a decision framework for what to keep or cut.
How much does fractional founding marketer work cost?
My fractional engagements are structured as two to three days per week, minimum three months. Project-based engagements are available for defined scope: GTM audit, ICP definition sprint, or messaging architecture. Pricing is shared on a discovery call.
