Marleen Vogelaar is the founder and CEO of Ziel, which is an on-demand apparel manufacturing platform and retail service that creates customer apparel collections for brands and retailers so they can successfully sell quick rotating private label collections without investing in inventory. Previously she was co-founder of Shapeways, the world's leading 3D printing service and marketplace. In 2008, she and her co-founders launched Shapeways’ upload-to-3D-print service, and she’s scaled it to the current community of buyers and sellers for 3D designs with HQ in New York City and two other factories. Prior to Shapeways, Marleen was a Strategy and M&A consultant and was in operations management in the paper industry. Marleen is a former heptathlete and spends her spare time in the outdoors as much as possible.