I compress a product team into one person.
AI & Technical Product Manager: product, design, growth and code. I've proven it building from scratch, alone, and leading teams at the scale of millions of users.
- Product
- Design
- Growth
- Build with AI
- Leadership
- Founder
Facts, not adjectives.
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Millions of users protected by the anti-fraud machine learning I led as PM.
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LockLove, from idea to Google Play: my own concept, on a paid subscription.
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€20M+ managed in performance at Adevinta and 21 Buttons, with ROI as religion.
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fabrica Studio (opens in a new tab): projects from scratch: product, design, code, business plan and go-to-market.
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Co-founder, CMO & COO of Nexus Clips, with funding rounds raised.
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4–8 people led, in corporations and in startups.
I've played every position on the team.
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Product
From idea to backlog and from backlog to production. At scale (Adevinta) and from zero (Nexus, LockLove).
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Design
Branding, UI/UX in Figma and a pixel-perfect obsession. This website is the proof.
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Growth
I've automated my own work and my team's since before it was called growth engineering.
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Build with AI
I don't code blind: I bring the judgment to catch bugs, shortcuts and bad decisions. The result runs in production.
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Leadership
The real job: clarify, prioritize and unblock.
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Founder
Building from nothing: validate the idea, form the team and go raise the money.
An app that lives on your lock screen.
The messages that matter don't ping you: they wait. So I built an app that sends no notifications at all.
Twenty years, no gaps.
- 2025–today
Product Builder
fabrica Studio: MVPs and custom product for clients.
- 2021–2025
CMO & COO · Co-founder
Nexus Clips: from the first MVP to funding rounds.
- 2019–2021
Head of Growth
Agora: product, marketing, data and partnerships in a single role.
- 2018–2019
Performance Director
21 Buttons: leading performance, influencers and SEO across 8+ countries at Barcelona's fashion startup.
- 2016–2018
Performance Marketing Manager
Milanuncios (Adevinta): paid, app marketing and CRM (Braze) for Spain's leading classifieds marketplace.
- 2014–2016
PM · Quality & Fraud
Adevinta (Segundamano · Coches.net): anti-fraud machine learning that protected millions without slowing growth.
- 2010–2013
Platform Operations
Fotocasa: XML integrations, QA and the desk everything passed through.
- 2008–2010
Manager & Designer
Anuntis: classifieds, the school of detail.
Understanding how something works isn't enough for me: I have to build it. The first time I went big, it was a stratospheric balloon.
2012 · Signal lost 
It rose to the stratosphere and never came back. I'd build it again tomorrow.
And I still listen to the sky: if you follow a flight over Barcelona on FlightRadar24 (opens in a new tab), part of that signal comes from my antenna.
If you need someone who turns ideas into product, let's talk.
Product roles, building with AI, or leadership. On a team, for the long run.
randy@esperben.com
