About us

We are a venture-backed startup in stealth, building data infrastructure for the age of AI agents. A small, senior founding team, already working with design partners and early enterprise customers. We are in stealth now, and that will not last long. We need someone to make sure the world understands what we have built the moment we step out. We will tell you what it is in conversation, under NDA.

The role

You will be our first Head of Marketing. You build the function from scratch and own the story we tell.

This is not a role for a specialist who runs one channel well. It is for someone who has seen the whole board: positioning, product marketing, content, demand generation, events, community, brand. You know how the pieces connect, and you are happy getting your hands dirty in all of them before there is a team to delegate to.

You will define our positioning, narrative and category as we move from stealth to market, and work closely with product and the founders to turn a complex technical platform into clear customer value.

You will own product marketing at the sharpest end: the competitive map, the battle cards, and exactly why we win against every alternative. You will produce content that earns attention from technical buyers and build developer advocacy from zero, so the engineers and platform teams who touch our product become our loudest champions. You will run high-trust, high-touch programmes for enterprise buyers, from executive dinners and peer events to customer storytelling and founder-led thought leadership.

You will market the way 2026 allows: AI-native from day one. Agents and modern tools across research, content, targeting, campaigns and measurement, not as a gimmick but because that is how a small team punches far above its weight. You will design that operating model, choose the stack, pick the agencies and hire the early team.

What you bring

Experience leading marketing for a complex B2B technology product, ideally in data platforms, AI, infrastructure or developer tools.



A holistic marketer with strong judgment across the whole funnel, from first touch to expansion.

International experience. You have marketed across geographies and know that what lands in Madrid does not always land in New York or London.

Strong product-marketing instincts: you can identify the best initial use cases, spot what makes us different, and turn it into something the sales team actually uses.

A prolific content producer, fluent with AI tools for both inbound and outbound, and eager to keep building new ways of working around them.

Real comfort with technical depth. Our buyers are engineers and platform leaders, and they smell marketing fluff from a mile away. You know how to earn credibility with technical communities rather than interrupt them.

Comfortable in a true 0-to-1 environment: scrappy, hands-on, able to operate without a playbook. Experience managing a team, even a small one. Excellent written and spoken English. Comfort with the discretion stealth requires.

How we work and what we offer

We measure results and ownership, not hours, and we believe in-person time brings out our best work. Hybrid in Madrid, three office days a week together. Agents do the orchestrated work and humans stay accountable. No assholes, radical transparency on metrics, roadmap and risks, and intensity in seasons rather than permanent burnout.

Generous equity: we want early people to share properly in a major success. High-end laptop, private health insurance, 22 working days of holiday.

Compensation: a base salary at the top of the Madrid market for a first marketing leader, set by how far your experience goes beyond the bar above.

How we hire

We hire for the bar, not the gap. An intro conversation, where under NDA we share what we are building. A working session on positioning: we give you what we can share and you show us how you would tell it. A deep-dive on a launch or category you built and what you would do differently. Founder conversations on customers, trade-offs and values, then references.

Sound like you? Skip the cover letter and send us something you have made instead.

📌 Head of Marketing (Madrid)
🏢 Stealth Data AI Startup
📍 Madrid