[9] After graduating from a technical high school (HTL), where he passed an apprenticeship as a carpenter, bricklayer, and draftsman with distinctions,[9] he moved to Vienna in 1987 to apply to the academy of art at the Masterclass of Pritzker Prize-winning Arch.

In February 1993, Klumpner earned his master's degree in architecture from the Academy of Applied Arts in Vienna and made internships with Enrique Miralles and Carmen Pinós in Barcelona or a self-initiated exhibition and -film project, John Lautner, Architect, Los Angeles.

Later in 1995, he received a Fulbright Fellowship to study at GSAPP at Columbia University / NY, a postgraduate degree as Master of Science in Architecture and Urban-Design (MSAUD), winning the Award for Excellence in Design.

Engaging in direct discourse with Winy Maas, Saskia Sassen, and Sergio Benvenuto moderated by Kristin Feireiss at the peak of the star-architecture cult, their talk was titled, "The Cities Poor Belt: dialectics of poverty and nobility," in what architecture theorist and historian Bart Lootsma, present in the auditorium, remembers as follows: "But when architects like Thom Mayne, Wolf Prix, and Hani Rashid could not fly in on September 11th because of the grounding of all flights, you two presented us a radically alternative program for architecture, based on inclusivity, not exclusivity, and collaboration instead of individualism.

Short time teaching activities and lecturing led him to Harvard GSD, SCI-Arc, Taliesin, RIBA, A-A London, TU-Delft, Berlage, HKU, AEDES, Hafen-City University Hamburg, TU-Munich, TU-Vienna, amongst others.