In 2012 Jelmer became lecturer of law at the Amsterdam University of Applied Sciences. He was selected as the best lecturer by students for two years in a row. In 2018 Jelmer joined the DreamApply team to support education institutions with their internationalization and digital transformation by modernizing their Student Admission Systems. Since then he has worked closely with more than 50 universities, reviewing their procedures and advising on possible improvements, leading to more than 300% growth in international student admissions.