The Ocean Cleanup develops technologies to extract, prevent, and intercept plastic pollution. The Ocean Cleanup’s goal is to fuel the world’s fight against oceanic plastic pollution by initiating the largest cleanup in history.

Project Timeline

Our Team

At The Ocean Cleanup we work with a team of approximately 100 committed people, performing research in the fields of engineering, physical oceanography, ecology, finance, maritime law, processing and recycling.

Boyan Slat

CEO and founder

Boyan Slat (1994) is a Dutch entepreneur and inventor who creates technologies to tackle global issues of sustainability. He is the founder and CEO of The Ocean Cleanup, where he is responsible for overall strategy and cleanup technology development.

Boyan Slat has been recognized as one of the 20 Most Promising Young Entrepreneurs Worldwide (Intel EYE50), and was crowned 2014 Champion of the Earth, the United Nations' highest environmental accolade. In 2015, HM King Harald of Norway awarded Boyan the maritime industry's Young Entrepreneur Award.

Hans Streng


Hans Streng (1954) studied Electronics at Eindhoven University of Technology and earned an MBA from the University of Rochester. Hans occupied numerous leading positions at Phillips, The Industree, NXP and Geotate. As CEO of Epyon he steered the company from a start-up into a successful enterprise, which attracted a takeover by ABB. Hans joined The Ocean Cleanup as COO, overseeing all daily operations.

Michael Hartnack


Michael Hartnack (1972) has 20 years experience as ethical venture capital investor and financially-focused business (strategy) consultant.  He is a qualified Chartered Accountant. Michael began his career at KPMG (1995 - 2007) where he specialised in advising high growth  businesses (or their investors) in the context of mergers and acquisitions. For the last decade he has worked almost exclusively with (and is passionate about) high-potential businesses which deliver environmental or social returns. Michael is also a founding shareholder of a pioneering UK medical devices start-up. As CFO he is responsible for the foundation’s sound financials and in charge of all financial flows.

Lourens Boot

Lead Engineer

Lourens Boot (1974) studied civil and offshore engineering at Delft University of Technology. After completing his studies, Lourens has worked for 12 years in the large oil and gas corporate business. He was stationed on several locations in Asia and Africa, managing projects for Schlumberger and Shell. After a break Lourens decided to direct his focus to clean technology. At The Ocean Cleanup his role is to lead the engineering team in designing, testing and building the system that will capture and retrieve plastics from the ocean.

Julia Reisser

Lead Oceanographer

Julia Reisser (1984) leads the oceanographic team and the ocean plastic research expeditions. She is responsible for increasing the knowledge on mass and distribution of plastics across the world’s oceans. Initially starting her academic career in Brazil, she then moved across the world to do her PhD in Oceanography at the University of Western Australia. Her research focuses on understanding how ocean physical processes influence plastic pollution and marine life. Julia has led many research expeditions in the Atlantic, Pacific, Indian and Southern Oceans, resulting in 15 publications on plastic pollution and biology topics to date.


Boyan Slat
Founder & President

Ir. Frans Ratelband MSc

Femke Hoes


Boyan Slat

Michael Hartnack


Femke Hoes
Office Director

Robert Chesal
Head of Communications

Julia Reisser MSc
Lead Oceanographer

Rick Martini
Pilot Project Manager

Eline Spek
Expedition Manager

Lourens Boot
Interim Lead Engineer

Stella Diamant
Mega Expedition Coordinator

Francesco Ferrari
Lab Coordinatorr

Ianthe Dickhoff
Communications Manager

Merel Bas
Communications Assistant

Sneh Sameer

Lys-Anne Sirks
Expedition Assistant

Dieke van der Gugten
Mechanical Engineer, Special Projects

Jan-Willem Damsteeg
Systems & Control Engineer,
Special Projects

Sjoerd Drenkelford
Mechanical Engineer,
Special Projects

Bruno Sainte-Rose
Lead Computational Modeler

Hanneke Binnendijk
Assistant to the Office Director


Hester van der Laan
Intern Pilot Projects


Sounding board

Leonid Pavlov
Computational Studies Advisor

Michiel Kruijff
System Engineering Advisor

Joost Niepoth
MarCom Advisor

Marketing and Communications

Sophie de Voogd
Demo model Designer

Andrea van den Berg
Demo model Designer

Elmar ten Kate
Demo model Designer

Lennart Opdam
Demo model Designer

Linde Rappard
Demo model Designer

Yiu Fung Chow
Demo model Designer

Jorne de Vries
Demo Model Designer

Matt del Biondi
Graphic Designer

Tom Pougin
Graphic Designer

Jonas Hermann
Graphic Designer

Lucas Körner
Graphic Designer

Robin Bugdahn
Graphic Designer

Bea Nagy

Dana Nentjes

Anne van Campenhout

Hans van Piggelen

Lenneke Karlas

Kees van Bezouw
Email Communications

Manissa Ruffles
Speaking Coordinator

Sabrina A. Roy
Social media Coordinator

Jolien Jonker
Documentary Intern

Research and Development


Steven Mitchell
Expedition Advisor

Nitin Prasad
App developer

Harm Pieters
App Developer

Eva Seignette
App Developer

Daniel Baker
App Developer

Bart Sturm
App Developer

Dan Pinder
Interim Vessel Recruitment Coordinator

Andreas Saavedra
Vessel Recruiter

Ella van Gool
Vessel Recruiter

Aude Pacini
Vessel Recruiter

Mario Merkus
Trawl Developer

Jan Maarten de Gruijter
Trawl Developer

Wouter de Vos
Trawl Developer

Mirjam van der Mheen
Trawl Developer

Claartje Ketelaars
Trawl Developer

Arnaud Graeffly
Composite expert

Martin Rijn

Denny Blokland
Packaging Designer Trawls 

Brody Lee
General Assistance to the R&D Dept 

Dario Grassini
Mega Expedition Assistant

Audrey Legat
Mega Expedition assistant

Heidi Hong
Mega Expedition Assistant


David Cerda Salzmann
Technical manager special projects

Jeremy Nijk
General Assistance to the R&D dept

Wim Poel
General Assistance to the R&D dept

Bart Kaase
General Assistance to the R&D dept 

Martin Bakker
Assistant Special projects

Aristotle Boaitey
GIS work 

Dmytro Tereshchenko
Volunteer Architect

Marton Mazzag
Volunteer Architect


Herm Bussemaker
Naval Architect

Sergio Castellanos

Pilot Projects

Ioannis Katseris
Costing Engineer

Bettina Boschen
Lead Maritime Law Researcher

Maritime Law

Process Engineering

Norbert Fraunholcz
Lead Process Engineer

Rosmary Brandalise
Process Engineer

Kauê Pelegrini
Process Engineer

Diego Piazza
Process Engineer

Computational Modeling 

Simone Manuputty 
3D CAD Support 


Hanneke Stolk

Sonja van Eersel
Financial Assistant



Monique van de Graaf
Legal Counsel

Anna van Duin
Legal Counsel

Anouk Stevelmans
Legal Counsel

Martijn Stuart
Legal Counsel


Josje Erkelens
HR Management

Sanne Lemmens
HR Manager

Tjeerd Hoes
HR Advisor

Saskia Nijhof
Secretary support


Steven Bink
IT Coordinator

Rempko de Bie
IT Support

Maarten Eekels
SharePoint Consultant

Andres Schulz
Salesforce Consultant


Mary Adner

Kim Rybarczyk

Alison Frost


Colomba Grolleau
Translator French

Jaime López
Translator Spanish

Patricia Schiavone
Translator Spanish

Pauline Horng BSc
Translator Traditional Chinese

Norbert Eggermont
Translator German

Tina Conrad
Translator German

Anne-Marie Vermunt
Translator English

Aya Sadahiro

General Assiantance

Sandra Quirijns
General Assistance

Astrid Groot
General Assistance

Bara Halikova
General Assistance

Etienne Schweistries
General Assistance

Wieke Dingler
General Assistance

Ema Halikova
General Assistance

Gabrielle van Steenstraten
General Assistance

Rene van Arend
General Assistance

Yoli Wheeler
General Assistance

Martijn Rodenburg
General assistance