Project Members

Last modified on January 10, 2026 • 3 min read • 483 words
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These members are currently involved with Project Didymus.

Stieneke Roelofsen  

Stieneke (b. 1998) finished her Bachelor of Theology at the Christian University of Applied Sciences in Ede (The Netherlands). During her studies she was chair of the student council, advising the board on making the university an inclusive place for all students. After completing her bachelor’s degree, Stieneke began working for the Dutch government. Stieneke is currently pursuing a premaster at the Protestant Theological University (PThU) with the goal of enrolling in the master’s program for pastors and spiritual counselors, reflecting her dedication to supporting others in both spiritual and practical ways.

Maarten The MA  

Maarten (b. 1994) studied theology at the Christian University of Applied Sciences in Ede. After finishing his bachelor’s degree, he continued his studies at the Baptist Seminary and the Vrije Universiteit Amsterdam. Specializing in Baptistic and Evangelical leadership, he earned his master’s degree in theology and religious studies. Currently, Maarten serves as a full-time pastor at the Kruiskerk, a Baptist congregation in Dordrecht.

Leonard de Ruiter MSc  

Leonard (b. 1993) studied Child and Adolescent Psychology at Leiden University. He is currently studying at the Theological University of Apeldoorn. Due to a strong affinity with IT, he has developed as a software developer and is employed part time at SEVENP  . He has contributed to various open-source projects, such as the NVDA screen reader  and the liblouis  braille translator. In addition, he has contributed to an eight-dot braille standard  for the Dutch language area within the Dutch Braille Authority.

Dr. Marco Rotman  

Marco (b. 1970) studied theology at the Evangelical Theological Faculty (Leuven), specializing in New Testament. In 2019 he received his PhD from the Vrije Universiteit (VU), Amsterdam. He has been working at the Christian University of Applied Sciences in Ede (the Netherlands) as a New Testament lecturer since 2004, and is leading a research group on the Jewish character of the New Testament and Jewish-Christian relations since 2025. By tutoring several students with a visual impairment in their exegetical work, he witnessed first hand the challenges these students encounter in Biblical Studies. Marco is affiliated with the Amsterdam New Testament Colloquium (VU) and is a member of the Society of Biblical Literature, the Studiosorum Novi Testamenti Conventus and the Dutch Association of Jewish Studies.

Dr. Vincent van Altena  

Vincent (b. 1977) is senior researcher at Kadaster, the Netherlands and co-chair of the International Cartographic Association’s Working Group on Inclusive Cartography. He holds a bachelor’s degree in theology (CHE), an MSc in geographical information science (VU), and a PhD in spatial-temporal interpretation of early Christian literature (Delft University of Technology). He is affiliated with the Amsterdam New Testament Research Colloquium (VU), and a member of the Studiosorum Novi Testamenti Conventus. At Kadaster, Vincent has led the Dutch initiative on tactile mapping (2023-2025). He is co-editor of the book Tactile Mapping: Cartography for people with Visual Impairments, Redlands, CA: Esri Press (2025).