Martin O'Leary Startup Marketing

Who’s Behind Uncharted?

Hey, I’m Martin your resident Growth Engineer.

Nice to meet you 🍻

I’ve spent two decades as the engineer-inside-marketing inside startups, launching fintechs, scaling digital banks, and reverse-engineering what actually drives traction.

I’ve worked on:

💰 Built Ireland’s first digital bank to $5 B in deposits before “fintech” was a word.
📈 Scaled two startups past $25M and one past $50M
🔍 Turned “growth problems” into fixes in product, positioning, or market fit.

Why Uncharted exists

Most startup advice is recycled or oversimplified. I share the playbooks I wish someone handed me on day one.

What I actually do

I dissect how startups grow (and why they stall), blending code with copy to build AI-powered GTM systems a solo marketer can run.

Not just marketing but psychology, positioning, and the brutal realities of growth.

👉 Subscribe to Uncharted and get startup growth without the fairytales.

P.S. 👉 Want to chat? DM me on X or connect on LinkedIn.

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Subscribe to Uncharted | Startup growth without the fairytales

Every Tuesday, 5K+ founders and marketers get Uncharted. My unfiltered take on what actually builds startups. Not the fairytales. The real playbook.

People

Growth Engineer inside fintech. Took Ireland’s 1st digital bank to $5 B, pushed 3 startups past $25-50 M. I share the bruises so you skip the burn. Plus the occasional meme.