About Tree-Nation
Tree-Nation is the world's largest reforestation platform, connecting citizens and companies with verified planting projects across the globe. Since 2006, over 800,000 users and 30,000+ companies have planted more than 45 million trees through our platform, across 40+ active reforestation projects worldwide.
We combine technology and environmental impact to make reforestation simple, transparent, and scalable. Our goal is to plant 1 trillion trees by 2050 — and we are building the platform, the automation, and the systems to get there.

The Team — What We Are Made Of
Our team spans many nationalities, backgrounds, and disciplines. What we share is a mindset: we take ownership because we care about what we're building, we don't back down from hard problems, and we trust each other to lead, make decisions, and ask for help when needed.
We are investing heavily in automation and AI to scale our impact. The company provides access to the latest LLMs, and we strongly encourage everyone to innovate.
We're based in Barcelona and work primarily from the office,



because the energy of working side by side matters to us.

About This Position

We are looking for a senior product builder to join Tree-Nation's tech team.
This is not a classic PM role. There is no CPO layer above you, no product team around you, and no process handed to you. You will work directly with the CEO and the engineering team to turn business vision into clear, coherent, build-ready product features — and you will own that function end to end.
The profile we're looking for sits at the intersection of three things: product ownership, technical depth, and business judgment. All three are non-negotiable. You need to think like a product owner — flows, specs, UX, priorities, quality. You need to think like an engineer — data models, service boundaries, backend logic, implementation trade-offs. And you need to think like a businessperson — commercial impact, revenue logic, what's worth buildi

📌 Senior Product Builder (Barcelona)
🏢 Tree-Nation
📍 Barcelona