Marten Lohstroh is a Co-founder and CEO at Xronos. Colleagues describe him as "I have known Marten since he started the BSc Computer Science program at the University of Amsterdam. During his studies and the time he acted as a lab assistant, he really impressed me. Besides being a very bright student who can easily grasp complex matters, he is a highly-skilled computer scientist with a very professional working attitude. Moreover, he is a confident, well-spoken person who knows what he wants. All in all, without any doubt, I would recommend Marten for any job!" and "Marten has assisted me for several years in a course that was aimed at all c.s. bachelor students. I have come to know Marten as a very precise and skillful worker. The course also implied a vast amount of administration, of which I have seen practically nothing due to Martens very efficient work. Most of the administration was computerized by Marten, from which the organization reaped great benefit. The courses ran rather smoothly and for this course, Marten was somewhat like oxygen. You hardly notice it, but you dearly miss it when it is not there."