Mark Marijnissen is a consultant at AT Osborne Netherlands, where he specializes in Infrastructure, Area Development & Environment projects. His primary responsibility is to manage projects, conduct audits, and assessments. Mark has a Master of Science degree in Construction Management & Engineering from Delft University of Technology, as well as a Bachelor of Science degree in Architecture, Urbanism and Building Sciences from the same institution. Mark is also an alumnus of Christelijk Gymnasium Sorghvliet, where he studied Gymnasium, Natuur & Techniek, Economie, Grieks.

Before starting at AT Osborne, Mark completed internships and held various positions. He worked as a graduate intern at Schiphol, where he gained valuable experience. Mark also served as an expeditor at Allseas, which gave him insight into supply chain management. Mark was the chairman of the Student & Huis Delft and treasurer of the Lustrum Skiing Trip Committee at K.S.V. Sanctus Virgilius. He was also a board member at S.V.V. Taurus.

Mark has a diverse background and a unique set of skills. He has excellent analytical and problem-solving abilities that allow him to understand complex situations quickly. He can shift smoothly between different components of a project and make connections. Mark also has excellent social skills and takes various interests into account. He is focused on collaboration and team dynamics, making him an excellent asset to any project.