Partner

Pieter van Dijke

Pieter has a decade experience in strategy and sustainability. He started his career in 2015 at Royal Tropical Institute in Amsterdam as Chief of Staff. Subsequently, he moved to Australia, where he spent 3 years with Kearney working with a variety of teams across topics such as restructuring, digital transformation, finance & operations, predominantly in CMT.

After moving back to Amsterdam, and spending a half year sabbatical as a beer brewer, he joined the international sustainability consultant Holtara. Pieter played a crucial role in scaling the advisory arm of Holtara with a primary focus on helping companies and investors to develop and implement sustainability strategies.

He holds a MSc in Economics from Utrecht University and an MSc in International Relations from the University of Amsterdam.

Partner

Marieke Boudeling

Marieke has 8+ years of experience as a sustainability advisor. She started in 2017 with Spring Associates, where she specialised in developing and implementing sustainability strategies for private investors and their portfolio companies. Marieke has a proven track record in building sustainable businesses, including two years in New York, where she launched the advisory business for Holtara. She has successfully led advisory teams at Holtara and served as Deputy Head of Northern Europe.

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Recognised as a leader in her field, she was named one of the Top 50 Women in Sustainable Finance in 2024.

She holds a Research Master’s in Multidisciplinary Economics from Utrecht University, specialising in game theory.

Partner

Sebastiaan Greeven

Sebastiaan has 10+ years of advisory experience in strategy and sustainability. He started his career in 2015 at IDEA Consult in Brussels, advising the European Commission on green economy, renewable energy, and technological innovation.

In 2017, he joined the strategy consulting boutique Spring Associates in Amsterdam, which later evolved into Holtara. At Holtara, Sebastiaan played a key role in scaling the company from 15 to 150 employees and co-founded the platform venture ESG Advantage.

He holds a BSc and MSc (both cum laude) in Complex Systems Engineering and Management from Delft University of Technology.

Manager

Gert-Jan van de Poll

Gert-Jan van de Poll combines 7+ years of advisory experience with a focus on turning sustainability ambitions into measurable results. He started his career in 2018 as a financial consultant, supporting management teams on valuations, financing and growth strategies for impact-driven companies. 

Before joining Dune Partners, he worked at Holtara from 2021, advising investors as well as private and listed companies. He supported clients on areas including sustainability strategy, carbon measurement and reduction, and CSRD reporting, while also developing practical solutions that enabled companies to measure, report and improve their sustainability performance. 

He holds MSc degrees in Economics and Finance (cum laude) from the University of Groningen.

Associate

Kristo De Groodt

Kristo has 6 years of advisory experience in strategy and sustainability. He started in 2017 at EY in Toronto as management consultant focused on strategy, analytics and workshop facilitation. 
 

In 2021, he moved to Amsterdam and built out expertise in sustainability advisory. At Holtara, he guided investors and entrepreneurs in their sustainability efforts, with a particular focus on impact investing; company-level strategic value creation; and carbon measurement & reduction. Alongside his hands-on experience, he is accredited by the CFA in Impact Investing.

He holds a Master’s in Business Economics from KU Leuven and a Bachelor of Commerce from the University of Toronto (both magna cum laude). He also holds CFA's Impact Investing Certification

Consultant

Romée de Wilde

Romée de Wilde has 4 years of consulting experience, including three years in sustainability advisory. At her previous employer, MJ Hudson / Holtara, she focused on supporting private market clients, particularly mid-market private equity firms, on developing and implementing portfolio decarbonisation strategies and creating additional value through introducing ESG-related initiatives.

Having grown up in Singapore and Malaysia, and with experience interning in Indonesia and studying in Hong Kong, Romée brings a strong international perspective to her work. Romée recently obtained the CFA Institute Certificate in Impact Investing and is actively involved in several female impact and sustainability communities.

She holds an MSc in Strategic Management (cum laude) from Erasmus University Rotterdam.

Consultant

Joost Kist

Joost Kist brings four years of professional experience in sustainable corporate finance and sustainability advisory. He began his career at Sustainable Capital Group, where he worked on financial advisory projects with a strong emphasis on sustainability-driven value creation.

Before joining Dune Partners, Joost worked at Holtara, supporting private market clients, particularly mid-market private equity firms, in developing sustainability strategies, driving company-level value creation, ensuring regulatory compliance, and streamlining ESG initiatives across diverse portfolio companies. In addition to his practical experience, he holds a CFA accreditation in Impact Investing.

Joost earned an MSc in International Financial Management and a BSc in International Business from the University of Groningen.