DES GmbH is an engineering office specializing in building technology, with locations in Rostock, Berlin, Hamburg, Munich, and Zurich. Established in 1991, the company is committed to excellence in engineering and technical building equipment (TGA). As one of the first digital TGA planning offices, DES emphasizes sustainability in all technical processes, including paperless operations and environmentally conscious employee mobility. The company utilizes innovative technologies such as Mixed Reality and 3D planning in conjunction with the BIM method to create aesthetically valuable buildings. DES fosters a collaborative and interdisciplinary work environment, focusing on a balance between work and personal life, and offers maximum flexibility in working hours. The company values a constructive approach to mistakes and encourages open communication through regular feedback sessions, aiming to redefine TGA planning for a sustainable future.