Martin Jonker is a Docent Wiskunde at Johan de Witt Scholengroep. He possess expertise in procurement, supply chain management, contract management, purchasing, outsourcing and 5 more skills. Colleagues describe him as "I have worked with Martin for the last 5 years at CB&I, both as his manager as well as his colleague. I have come to know Martin as a strategic thinker with highly developed analytical skills. He has a big talent for generating, analysing, and interpreting data. His great Excel skills are very effective and useful in this respect. Martin has led several workshops on various topics and with varying groups. Some in smaller teams of 2-5 people, some for groups up to 60 people from different educational and cultural backgrounds. During these workshops Martin displayed his well-developed teaching skills. His enthusiasm and clear explanation resulted in a great learning experience of the workshop participants. Further Martin is a great leader and people manager. He is not only result oriented but always keeps an eye on the group dynamic and well-being of each team member. He senses when people would require personal attention and addresses this appropriately. Rutger Theunissen" and "Being formed by acquisition from other oil/gas companies, TAQA's upstream and midstream business in The Netherlands was challenged from the very beginning in Procurement and Supply Chain Management activities. Relying on his theoretic knowledge and professional experience, his passion and determination to achieve results, Martin has built a solid C&P foundation for TAQA -- effectively balancing the need for governance and control with the business unit requirements for delivery against lowest TCO. In addition to day-to-day support of critical business needs, Martin successfully drafted and implemented the local country Contracting and Procurement policies, while also being a major contributor to the development of Taqa's global policy. Martin's skills and personality suit him well. He has a great future with many successes to come. I'm certainly glad Martin is part of our team today, and hope to work with him again in the future."