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Find a growth co-founder: acquisition and experimentation

A growth co-founder differs from a traditional marketer in their method. They form hypotheses, run quick experiments across the whole user journey, from discovering the product to recommending it, measure the results and keep only what works, often on a very small budget.

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In short

To find a growth co-founder, identify the stage of your funnel that holds you back most (acquisition, activation, retention or referral), publish your project for free on EasyCofounder naming that stage and the analytics already in place, then give candidates a short series of measured experiments before you commit.

Their scope goes beyond advertising. They work on sign-up, first use, re-engagement, pricing and referral mechanics, in close collaboration with the product and engineering team, because many growth levers sit inside the product itself.

On EasyCofounder, describe your product, your first usage figures and the stage that is stuck, state the role and equity you have in mind, then talk to growth talent whose past experiments match your model, B2C, B2B or marketplace.

Growth work looks different depending on the model. In a consumer app, the focus is often on the first session, notifications and referral loops. In B2B software, it is about trial conversion, onboarding of whole teams and the moment a free account becomes a paid one. In a marketplace, a growth co-founder must balance supply and demand, city by city or category by category. Ask candidates which of these models they have actually worked on.

Be wary of profiles who only talk about tactics that worked once for another company. A good growth co-founder explains why an experiment worked, what it cost and what it taught the team, and is comfortable presenting results that did not move the numbers.

What a growth co-founder brings

  • A culture of experimentation

    A growth co-founder keeps an experiment log with hypothesis, measurement and decision, which turns intuitions into lessons shared by the whole founding team.

  • Reliable data

    Before optimising, you need to measure properly. A growth profile sets up tracking of key events and simple dashboards, while respecting the rules on cookies and personal data.

  • Growth inside the product

    Sign-up flows, time to first value, invitations and sharing are often more cost-effective than advertising, and a growth co-founder works on them with the developers.

  • Retention before acquisition

    If users leave after the first week, every new channel simply refills a leaking bucket. Strong growth partners look at retention curves before spending on acquisition.

  • Small budgets, honest tests

    Early experiments should be cheap and fast to read, with a clear success threshold decided before launch rather than after the results come in.

  • Shared ownership with product

    Growth changes often touch onboarding, pricing pages and emails, so agree how the growth co-founder and the developers plan and review these changes together.

Find your co-founder in 4 steps

  1. 1

    Create your free profile

    Describe your skills, your availability and what you bring to a founding team.

  2. 2

    Publish your project

    Say which role you are looking for (CTO, CEO, CMO…), the commitment expected and the equity on offer.

  3. 3

    Let the matching work

    Filter talent by skill and location, or get suggestions of compatible profiles from the AI matching.

  4. 4

    Talk, then meet

    Chat through the built-in messaging, test your collaboration on a first project and put your agreement in writing in a shareholders’ agreement.

Frequently asked questions

What is the difference between a growth co-founder and a marketing co-founder?

Marketing also covers brand, positioning and communication, while growth focuses on measured experimentation throughout the user journey, with a strong link to product and data.

When do I need a growth profile?

As soon as early users confirm that the product meets a need, because optimising growth for a product that retains nobody mostly speeds up churn.

How do I test a growth co-founder?

Give them access to your usage data and ask them to propose three priority experiments, run one or two over a few weeks, then review the results together and the decisions they draw from them.

Where can I find a growth co-founder?

Publish your project for free on EasyCofounder stating your model and the stage to improve, then filter growth and marketing talent by skill and availability and start the conversation through messaging.

Which questions should I ask a growth co-founder candidate?

Ask for an experiment that failed and what they learned, how they set up tracking in a previous company, and which metric they would watch first for your product.

Can a growth co-founder work part time at first?

Sometimes, while the product is still being validated. Once you have regular users, growth needs continuous attention, so agree on a date or milestone for full commitment.

Does a growth co-founder need technical skills?

Basic skills help a lot: reading data, writing simple queries, using analytics and email tools, and editing landing pages without waiting for a developer.

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