In chronological order of when they started at ah3


Arch. DI Johannes Kislinger

Johannes is the founder and CEO of ah3 Architekten ZT GmbH. He studied architecture at the Vienna University of Technology and as a guest student at the Academy of Fine Arts in Vienna under Prof. Timo Penttilä. As a "Local Government Architect" he was profiled in Papua New Guinea for his specialisation in sustainable construction and developed his own construction program. Christopher Alexander, who he later met in Berkeley / California, had a great influence on his work.

Johannes is a member and founder of many initiatives with an emphasis on a holistic approach to planning and design. He supervises research projects and regularly acts as a consultant and judge at various architectural competitions.

He has been the CEO of ah3 Architekten ZT GmbH in Horn/Lower Austria for over 25 years and he also teaches at the University of Applied Sciences Vienna (Green Building) and is on the board of the umbrella organisation Innovative Gebäude © (Innovative Buildings).

"The common thread linking these ever since is my many valuable practical experiences, meetings and exchanges with important people and my conviction in building in a cost-effective and resource-conserving manner."

DI Thomas Lang

Studying architecture at the Vienna University of Technology

He is legendary for being extremely fast, and for his concentration, high precision and persistence when working - he is one of our wild cards, not just in competitions.

Mag. Susanne Berthold MA

Degree in History and French and postgraduate Masters qualification in Public Communication from the University of Vienna.

Words and languages are her passion: public relations, media design, event management, internal communication, training, sponsorship - she is our positive-thinking idealist, with responsibility and quality always in her sights.

Ulrike Tretzmüller

Precision and care distinguish Ulrike - she manages our studio and creates a clean, cultivated environment in which we simply enjoy working.

DI Armin Tahirovic

Fachhochschule Campus Wien, University of Applied Sciences, Architecture Green Building

Armin is passionate about environmentally conscious architecture. He completed his training while pursuing his career as a commercial artist. Comprehensively prepared, he develops precise and highly optimised solutions.

Mehran Mahsalari MA

University Shiraz Iran, nostrificated

Persistent, determined and a joyful worker, Mehran as a construction technician in our team working on technical solutions.

Alaa Al Kutabi BSc.

University Damaskus, Syria, nostrificated

Alaa just started working with us. We are pleased to welcome our new colleague.