São Paulo · Brazil

I've spent 30 years building communities. The next one is the biggest yet.

Co-Founder & COO of the Carrot Foundation — turning reuse and recycling into climate finance. Before that: the X-Games in Brazil, an Olympic comeback, an award-winning film, three best-sellers, and a lifetime in the pool with Brazil's water polo team.

Marcelo Doria in a light blue shirt, with plants in the background
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The Thread

One skill, many stages

Every business I ever built was the same business: bringing people together around something they love, and making that community bigger than the sum of its parts.

I learned it in the pool — water polo is a sport where nobody scores alone. I applied it to advertising, where brands are communities of belief. To nightlife, where a dance floor is a community of one night. To books, film and sports, where a club's history is a community's autobiography. To the X-Games, home of one of the largest youth tribes on the planet.

And now to the largest community I've ever attempted: the people — from global brands to the person who hauls the recycling truck — who together give our natural resources a second life.

The Story

Seven chapters, one arc

1992 · The garage

Two guys and a garage

My first company sold advertising space on buildings and public squares in São Paulo. My partner thought I was crazy when I wanted more. I crossed town to convince a creative duo that together we could be an agency. That became NAV Comunicação — 12 people, R$5M a year in billings, serving Daewoo, Mitsubishi and Lego through a partnership with the Young & Rubicam group.

1997 · Florestta

The nightclub that taught me everything

Florestta was São Paulo's landmark club — the first in Brazil to fly in international DJs. Ten partners, every mistake in the book, and one trip to London that changed how I think: Ministry of Sound wasn't a club, it was a content company wearing a club as a facade. I've been looking for the model behind the business ever since. When tragedy struck the club and it went down, I stayed until every debt I could resolve was resolved. That taught me more than the success did.

2001 · Geração Conteúdo

Stories worth publishing

Coleção Camisa 13 asked Brazil's greatest writers — Washington Olivetto, Mario Prata, Nelson Motta, Luis Fernando Verissimo, Ruy Castro — to write the stories of the 13 biggest football clubs. Three became national best-sellers. One became the film O Casamento de Romeu e Julieta. And as a producer, O Cheiro do Ralo won Best Film at both the Rio International Film Festival and Mostra de São Paulo.

2003 · BSB

Show business, sport business

At BSB, as partner and President, I got to prove they're the same thing. We won a 40-city global bid to bring ESPN's X-Games to Brazil — 7 arenas in Foz do Iguaçu, a 2,000-person team, R$40M budget, 200+ countries watching, R$50M+ for the host city in four days. The biggest event in Brazil's history outside the World Cup and the Olympics. We also helped restructure Brazilian basketball: the national team returned to the Olympics after 15 years, and I closed R$100M+ in contracts with Globo, Nike, Bradesco and Eletrobras along the way.

2013 · Multifans

The data years

Football clubs kept asking us how to build membership programs, and I saw the real asset was the data. Multifans built fan-data intelligence until the pandemic froze sports content — and by then I had already found a bigger game.

2020 · Solidos

The market technology forgot

At the X-Games I had brought in Ian McKee as our sustainability advisor. He told me something I couldn't stop thinking about: every industry had been transformed by technology — except the management of our natural resources, where every solution was still analog, and none of the math added up to the climate targets. I went to Brasília, sat with every player in the chain, brought in our first investor, and we founded Solidos.

Today · Carrot

The layer above

Solidos built the traceability software; then we made the harder, better call — stop operating the platform and build the layer above all platforms. That's the Carrot Network: digital infrastructure that certifies reuse and recycling on-chain and turns that data into climate finance. The IP now lives in an independent Swiss foundation, where I lead business and operations.

Now

What I'm building

Carrot Foundation

Co-Founder & COO · Business and Operations

Fundraising, institutional partnerships, positioning. As a founding team we've built a network that connects accredited organizations across the whole value chain — global brands, sanitation utilities, composters, certifiers — and has certified the recovery of 75,000+ tonnes of materials across 500+ organizations in the value chain: 51,000+ blockchain-verified certificates and 10,000+ tCO₂e in methane-avoidance carbon credits.

Team milestones: BOLD programme partnership · methodology aligned with UNFCCC AMS-III.F · third-party audits by Bureau Veritas · Earthshot Prize nominee 2024 & 2025 · Climate Curve Methane Prize Finalist 2026.

Instituto Ecozinha

Executive Director

Brazil's first zero-waste restaurant network: 86 establishments in Brasília proving, month after month, that 93% of what we call trash can go back to productive use — in a country that recycles 4%.

AMPA Water Polo

Co-Founder & Board Member

The São Paulo masters association I play for and help steer. Its social project, Bom de Polo, Bom de Escola, teaches water polo and citizenship to 400 public-school kids in Jaguaré and Paraisópolis — the rule I grew up with: you earn your place in the water by showing up at school.

Visit AMPA
Track Record

Verifiable, every line

X-Games 2013largest event in Brazil outside World Cup & Olympics
London 2012Brazilian basketball back in the Olympics after 15 years
R$100M+sponsorship contracts closed — Globo, Nike, Bradesco, Eletrobras
Best FilmRio Int'l Film Festival & Mostra SP — O Cheiro do Ralo
3× best-sellerColeção Camisa 13
75,000+ tmaterials recovered & certified on the Carrot Network
86 restaurantsInstituto Ecozinha zero-waste network
Marcelo at an event, wearing a conference badge
Beyond Work

The pool

I played water polo for Brazil — and I still train. Water is where I think.

Brazilian champion
South American champion
Pan American runner-up
World Masters — Gothenburg 2010
World Masters — Budapest 2017

I live in São Paulo with my wife, two kids and a dog. I make friends easily and businesses out of friendships — in that order.

Contact

Let's talk.

If you're building something at the intersection of climate, technology and community — or just want to argue about water polo — write me.