Our team includes experts from the agricultural sector as well as people with good knowledge in the field of technology and finance.

Placeholder for HeaderHeader

Meet the Grassa team:

in-depth agricultural knowledge...

Founder / advisor

Prof. Johan Sanders

Emiritus Hoogleraar Wageningen UR: Biobased research
Sanovations, Bio circular concepts
Research Director AVEBE

Placeholder for Johan SandersJohan Sanders

Managing Director

Rieks Smook

Wageningen UR: Agriculture college
International Business Development/Funding
Concept development

Placeholder for Rieks SmookRieks Smook

Commercial director

Bob Lambrechts

Wageningen UR: Animal Science
Feed development at Friesland Campina
Provimi on Pig(let)s, Ruminants and Chickens

Placeholder for Bob LambrechtsBob Lambrechts

Senior process engineering

Tom van der Walle

Wageningen UR: Agricultural Engineering
Technology specialist RF Campina
Lead process engineer Mead Johnson

Placeholder for Tom van der WalleTom van der Walle

combined with technical expertise...

Operational Director

Arjan de Ruijter

MTS process technics / HBO Business
Built multiple factories, set up operations

Placeholder for Arjan de RuijterArjan de Ruijter

R&D Director / Founder

Bram Koopmans

MSc Process technology
Water technology
International experience (Mexico)

Placeholder for Bram KoopmansBram Koopmans

Project Manager

Ben Rooijackers

Circularity expert
Project manager Bio Treat Centre
General Manager Mestac

Placeholder for Ben RooijackersBen Rooijackers

Refining machinery expert

Bart Docters van Leeuwen

Machine building expert at Hydro
Expert in refining machinery, machine building, machine design and machine innovation

Placeholder for Bart Doctersvan LeeuwenBart Doctersvan Leeuwen

Facility operator

Magdalena Bielecka

Operator in several agri and process industries

Placeholder for MagdaMagda

supplemented with financial, communicative and administrative power.

Financial Director

Hans de Vries

MSc economy, MBA, Register Controller
Financial management/director
25 year experience (British Steel, DSM, RWE)

Placeholder for Hans de VriesHans de Vries

Marketing Manager

Daisy Ripmeester-Lommen

Communication specialist & event management
10+ years experience
Business communication & marketing communication

Placeholder for Daisy RipmeesterDaisy Ripmeester

Administrative Support

Annette Bruining

Administrative support and bookkeeping

Placeholder for Annette BruinsAnnette Bruins