Marcel van Poecke

Founder & Chairman

Marcel van Poecke is the Founder and Chairman of AtlasInvest. He has over 25 years of experience in the energy sector. He is Head and Managing Director of Carlyle International Energy Partners and Chairman of Oranje-Nassau Energie.

Mr van Poecke has a degree in Agricultural Business Administration from the University of Wageningen and an MBA from the William E. Simon School of Management of the University of Rochester, USA.

Irina Liner


Irina Liner is co-Founder and Director of AtlasInvest for the past fifteen years. She is also Director and Partner of the Energy Intelligence Group. Previously Mrs Liner worked in Investment Banking and Corporate Finance for various Global Institutions.

Mrs Liner has a Bachelor’s Degree (Honours) in International Relations & Commerce from the University of Toronto and an International Master of Business Administration from York University.

Joost Dröge

Managing Director, Energy Team

Joost Dröge is Managing Director of the Energy Team at AtlasInvest, advising on all energy-related investments. Through AtlasInvest, he is also working with Carlyle International Energy Partners as a Managing Director. Prior to joining AtlasInvest, he worked as Director Corporate Strategy at Petroplus.

Mr Dröge holds a degree in Chemistry from the University of Utrecht.

Didier Ryelandt


Didier Ryelandt is the CFO of AtlasInvest. Previously he held various Finance positions in Belgium and the United States for ING (Investment Banking – Brussels), Engie (VP Finance – Houston, Tx) and Exmar (CFO – Belgium and Executive VP Offshore – Houston, TX).

Mr Ryelandt holds a Master in Business Engineering from the Louvain School of Management.

Ruben Clement

Lawyer and Chief Legal Officer

Ruben Clement is Lawyer and Chief Legal Officer at AtlasInvest. Prior to joining Atlasinvest, he worked for ten years as a lawyer for a major law firm in Brussels.

Mr Clement holds a Master in Law from the University of Leuven (KUL), a LL.M in Economic Law from the University of Brussels (ULB) and a LL.M in Corporate Law from the University of Brussels (KUB).

Heleen van Poecke

Investment Manager

Heleen van Poecke joined AtlasInvest as an Investment Manager in 2019. Prior to joining AtlasInvest she worked in B2B SaaS at Collibra and private equity investing and banking at AlpInvest Partners and Greenhill & Co.

Ms van Poecke holds a BSc and MSc in Economics from Erasmus University and an MBA from Harvard Business School.

Peter van Poecke

Director, Real Estate

Peter van Poecke is Founder and Director of Beryllus Financial Management, the real estate arm of AtlasInvest. Prior to joining AtlasInvest, he practiced as a veterinary physician for ten years.

Mr van Poecke holds a Master in Veterinary Science from Utrecht University. Additionally, he holds Masters degrees in Real Estate Management and Personal Financial Planning from the University of Antwerp.

Paul van Poecke

Senior Advisor

Paul van Poecke is founder and Director of Tree Energy Solutions. Tree Energy Solutions develops sustainable integrated energy-projects and supports companies in finding and implementing sustainable energy solutions. He has 30 years experience in the energy-sector; storage, LNG and refining and has held various senior positions during his career at Petroplus, Dragon LNG, 4Gas and HES International.

Mr van Poecke holds a Bachelors degree in Forestry and Agriculture of Van Hall Larenstein University of Applied Sciences in Velp.

David Apers

Investment Associate

David Apers is Investment Associate at AtlasInvest. Prior to joining AtlasInvest he worked 7 years as a commodity buyer, consultant and investment banker structuring financing deals in the energy & infrastructure sector.

Mr Apers holds the Chartered Financial Analyst designation and a Master in Business Engineering (magna cum laude) from the KU Leuven University.

Axel De Clerck

Portfolio Analyst

Axel De Clerck is Portfolio Analyst at AtlasInvest. Prior to joining AtlasInvest in February 2021, he worked 5 years as a strategy consultant at Roland Berger across Europe and Asia.

Mr De Clerck holds a Master in Business Engineering from the Louvain School of Management and a Master in International Management from the CEMS program.

Steve Kroeker

Assistant Treasurer

Steve Kroeker is the Assistant Treasurer at AtlasInvest. Prior to joining AtlasInvest, he worked for 13 years in various Cash Management and Treasury functions at LyondellBasell.

Mr Kroeker holds an MBA from the Solvay School of Economics and Management of the University of Brussels (ULB), and a degree in Business Administration from Taylor University.

Sonia Stouti

Chief Accountant

Sonia Stouti is Chief Accountant. Prior to joining AtlasInvest 10 years ago, she held various positions as Head of Accounting for international companies.

Mrs Stouti holds a Bachelor’s Degree in Accounting & Finance from ICC (L’Institut des Carrières Commerciales de la Ville de Bruxelles).

Patrick Reynaert

Chief Accountant

Patrick Reynaert is working as a Chief Accountant at AtlasInvest. Prior to joining AtlasInvest, he worked for 25 years mainly for Bouygues (Road Construction) and for GM-Chevrolet in Belgium, as well as for BESIX Group (Large Building Construction) in Dubai, Qatar and Azerbaijan.

Mr Reynaert holds a BBA in Accounting from the Highschool-University of Brussels.

Koen Dirckx


Koen Dirckx is responsible for IT infrastructure at AtlasInvest. He has been working as an IT consultant for multiple outsourcing companies at clients including Toyota Europe, Telenet, AB Inbev & Studio 100 over a period of 15 years.

Mr Dirckx has graduated in Information Management.

Carol Tillaert

Executive Assistant

Carol Tillaert is Executive Assistant to Marcel van Poecke, Chairman of AtlasInvest. With over 20 years of experience, she has fulfilled various EA positions for o.a. McKinsey & Co, Volvo Financial Services and the Executive Committee of ING.

Mrs Tillaert has graduated in Modern Languages and Office Management.

Stéphane Grimonster

Executive Assistant

Stéphane Grimonster joined in 2010 and is Executive Assistant to Irina Liner, Director of AtlasInvest. Prior to AtlasInvest she worked at the Consular Affairs of the Embassy of Belgium in Norway and at Bank Degroof in Brussels.

Mrs Grimonster graduated in Modern Languages and Business Management.

Catherine Hubert

Office & HR Coordinator

Catherine Hubert is Office & HR Coordinator. Prior to joining AtlasInvest, she worked for 17 years at Capgemini as Event Manager and L&D Coordinator. At the start of her career, she held several positions as executive assistant (a.o. McKinsey & Co. & Pfizer).

Mrs Hubert holds a Bachelor’s Degree from ECSEDI (Executive Assistant).

Interested in joining our team?