Management

Bauke Zeinstra
CEO

Bauke Zeinstra is Chief Executive Officer at MAG45 and Senior Vice President at Solar. He joined the company in 2014, following some years as a member of the board at Technische Unie (Sonepar Netherlands) where he was responsible for procurement and M&A. He brings with him extensive international experience in building and scaling up companies and integrating them post-merger. Starting out as a senior consultant at DHV in Amersfoort, he later held senior roles as a director of procurement and industrial sales at Telfort (British Telecom), Hagemeyer and Rexel. He prides himself on creating an inspiring environment in which individuals and companies thrive. Bauke holds a Bachelor’s degree in Business Administration and a Master’s in Political Science and Government.

Carolien Poelman
CHRO

Carolien Poelman is Chief Human Resources Officer at MAG45. She joined the company in 2015 having held senior HR positions in a variety of other companies. Carolien started out as an entrepreneur, founding an outdoor training agency focusing on team building and personal effectiveness. She then moved into the telecoms industry, holding marketing, sales and HR roles with KPN in the Netherlands and Belgium. From there, she joined the Freia Group previously KPN’s training division as Business Consultant Learning for KPN, later becoming Key Account Director Learning and Development. A similar role followed at Conclusion consulting company in Utrecht before she took on the challenge of HR Management Development at Imtech. Carolien holds a Master’s degree in Industrial and Organizational Psychology.

Marc van de Ven
COO

Marc van de Ven is Chief Operating Officer at MAG45. He kicked off his career by joining MAG45 in 2006 and has advanced his career with the company ever since. Marc started as a Contract Manager, became a Project Manager – executing customer consultancy projects for Dutch and international companies – then spent nearly four years as Manager Solutions Engineering. He moved into a role as Director Fulfilment before restructuring MAG45’s procurement department in his capacity as CPO, an interim role that he shared with the company CEO. For the past seven years, he has been COO, responsible for global operations. Marc earned a Bachelor’s degree in Business Engineering and a Master’s in Industrial Engineering & Management Science.

Jos Poelman
CFO

Jos Poelman is Chief Financial Officer at MAG45. Joining the team in 2016, he had previously worked in senior finance positions in a range of sectors from manufacturing, agriculture and chemicals to healthcare. Describing himself as a “business-oriented, hands-on” finance director with a track record in driving change, Jos started his career with General Electric. He then moved to SCA as Controller Production and Distribution Centre before becoming Manager Corporate Planning & Analysis at FrieslandCampina. Further controller and senior financial roles followed at Aalberts Industries, the Vincent Van Gogh institute for mental healthcare, and Koninklijke Kentalis deaf education institution. He is Chairman of the Supervisory Board of the Duinsberg Foundation, Stichting De As and Stichting Hoeve-Zadok Fund. Jos holds a Bachelor’s degree in Agriculture Economics and a Master’s in Business Administration.

Dirk van den Hengel
CCO

Dirk van den Hengel is Chief Commercial Officer at MAG45. He is a Supply Chain Management professional with a strong track record in Key account management, business consultancy and project management. Dirk started his career in Logistics Engineering, followed by several years in Project/Programme management, where he was responsible for global, multisite business transition projects. In 2014, he became Manager Solutions Engineering where he led a large international team that made a significant contribution to MAG45’s growth. He took on the role of Director Sales and Business Solutions before being promoted to CCO. Dirk holds a Master’s degree in Industrial Engineering & Management Science from Eindhoven University of Technology.

Bart Griffijn
CPO

Bart became Chief Procurement Officer in January 2023 and is responsible for tactical sourcing, category management, and product data management. He joined MAG45 in 2010 as a Contract Manager after various internships at manufacturing companies in the logistics and supply chain management fields. He continued his career at MAG45 as a Project Manager, responsible for designing and implementing customer-specific solutions, before becoming Business Development Manager with a remit to find new customers and coordinate MAG45’s business development activities globally. In January 2020, he took on the role of managing the company’s new Sourcing Department and in 2021 he became Director Procurement. Bart holds a Master’s degree in International Business (Supply Chain Management) from Maastricht University School of Business and Economics.