Our team


Bart Hartman
Bart Hartman, Chairman and Chief Entrepreneur

Bart Hartman is the founder of NOTS Impact Enterprises. He started his career as a consultant with McKinsey & Company and then worked as an entrepreneur, transforming and building about 15 businesses, including a successful over-the-counter medical products company. Bart holds an MBA from INSEAD.

Email: bart.hartman@nots.nl

Sjouke de Vries
Sjouke de Vries, Chief Operating Officer

Seasoned executive with a 19+ years international career and broad business experience in consumer goods and lighting. Proven track record in starting and profitably growing business in frontier markets. 

Email: sjouke.devries@nots.nl

Nanette Farwerck-Bergwerf
Nanette Farwerck-Bergwerf, Project Manager Funding

Nanette is an experienced Financial Sales & Marketing professional, having worked in the international corporate area for global banks. She has been active in the global Impact Investing community for the last 10 years both in FX, payments and hedging services of exotic currencies as well as Marketing & Sales of Impact Investment projects to Impact Investors. 

Email: nanette.farwerck@nots.nl

Bas Maassen
Bas Maassen, Sparring Partner of Chairman

Bas worked for 5 years in management consultancy, 12 years in banking, 13 years in private equity and now for 4 years as entrepreneur and (non-executive) board member at various companies and NGO’s. In relation to Africa, Bas is chairman of the supervisory board of Amref Flying Doctors and board member of DOB equity (Dutch impact investor in East Africa). Bas has a masters degree in econometrics.

Email: bas.maassen@nots.nl

NOTS Rwanda

Solange Mutezintare
Solange Mutezintare, Acting Country Manager - Rwanda

Solange is an accomplished program developer and manager with 12 years of experience in strategic, financial and administration management. Prior to joining NOTS Solar Lamps Ltd., Solange served as the Education Development Center Inc. (EDC) Deputy Chief of Party for a $ 25 million large-scale literacy and numeracy USAID funded project. 

Email: solange.mutezintare@notsrwanda.com

Ritha Muhorakeye
Ritha Muhorakeye, Finance and Administrative Officer - Rwanda

Ritha, prior to joining NOTS Solar Lamps Ltd., was the Finance and Administrative officer for 5 years for a USAID funded project. In this role she oversaw the financial and administrative operations of the project. She holds a bachelor's degree in accounting from Kigali Independent University.  

Email:  ritha.muhorakeye@notsrwanda.com

Board members

John van der Ent
John van der Ent

John is consultant and interim manager. His previous positions included CEO of V&D, Etam Group and of Dexcom Holdings N.V. and Chairman of the Board of Postkantoren BV.

Eric Rahusen
Eric Rahusen

Has had a 27 year career in Investment and commercial  Banking in the Netherlands. He currently holds a number of advisory position with Dutch family offices and Dutch foundations. He is the co-owner of “Saar aan Huis” a company which renders care services for the elderly.  

Saskia van Walsum
Saskia van Walsum

Saskia is founder of Riverdance Counsel Company which serves CEO's, top management and entrepreneurs in profit and non-profit with Coaching, Counseling & Change programs. Saskia is also Director, Shareholder and Founder of Concordia Fund, an independent "closed end" private equity fund. Previous positions were, amongst others, Global Director Human Resources with Heineken and CEO of Mona Dairy company (part of Royal Friesland Campina). 

Paul Bijleveld
Paul Bijleveld

Paul is a Managing Director at Aké Partners, a corporate advisory firm active in sub-Saharan Africa with local representation in Lagos, Nairobi, Abidjan and Johannesburg. He has 25 years of investment banking experience with Morgan Stanley, Barclays, UBS and ABN Amro and was head of African Investment Banking for Barclays/Absa Capital in Johannesburg.