Since 2004, Jens held multiple teaching positions. He was Assistant Professor at TU Berlin supervising 1st and 2nd year design studios 2004-2006, and a Unit Master at the AA Berlin Laboratory of the Architectural Association at the Aedes Network Campus ANCB in 2009. In 2009 he also conducted a design studio within the Master  programme Stage Design and Scenography at TU Berlin. As a Guest Professor at BTU Cottbus, he was head of the chair "Bauen im Bestand / Contextual Design" between 2010 and 2012, teaching both, Bachelors and Masters degree students. He led the English language postgraduate Architectural Design Programme ‘Architektur.Studium.Generale’ carried out by 10 universities across Europe and Israel, as a professor at BTU Cottbus for almost two years between 2013 -2014. Recently he has been teaching at the intersection of architectural design and heritage preservation, co-developing The Garage Manifesto at BTU Cottbus in 2016/17, Studio Bagan, a cooperation between BTU Cottbus and YTU Yangon in 2018 (in Myanmar) and 2021 (Online), and in 2022 3(0).000 Garagen, a survey and design workshop with the European Capital of Culture 2025 Chemnitz and Hochschule München.

In 2023, he was appointed Professor for Design, Building Typologies and Architectural Theories (Entwerfen, Gebäudelehre und Architekturtheorie) at the University of Applied Sciences Erfurt / Fachhochschule Erfurt.

As a guest critic, Jens has been invited to design studios of Donatella Fioretti, Regine Leibinger, Jan Kampshoff, Eike Roswag-Klinge, and Jörg Stollmann at TU Berlin - to the AA Berlin Laboratory of the Architectural Association at UdK Berlin (Marianne Mueller, Olaf Kneer) - the Northeastern University Boston Abroad Berlin (Bettina Kraus) -  Beuth Hochschule Berlin (Bernd Bess) - DIA Dessau / Hochschule Anhalt (Roger Bundschuh) - Hochschule Münster (Marianne Mueller) - Hochschule Potsdam (Heike Hanada) - Universität Kassel (Philipp Oswalt / Luise Rellensmann) - INDA Chulalongkorn Bangkok (Leonid Slonimskiy) - The Belazel Academy of Arts and Design Jerusalem Summer Studio Berlin at UdK Berlin (Zvi Efrat) - HEAD Genève (Leonid Slonimskiy, Online) - Hochschule München (Björn Martenson, Online) - TU Braunschweig (Dan Schürch)