Glanvet Barretto
Glanvet Barretto
MSc
speaks: English, Hindi, Marathi, German
convex ZT GmbH, Graz
Structural engineer
Srdjana Borkovic
Srdjana Borkovic
MSc
speaks: Bosnian, German, English
convex ZT GmbH, Graz
Architect
Ana-Maria Caballo
Ana-Maria Caballo
MSc
speaks: Spanish, German, English
convex ZT GmbH, Graz
Engineer
Lukas Cernosta
Lukas Cernosta
Dipl.-Ing.
speaks: Czech, English
Lukas Cernosta e.U., BÅ™Ãza
Civil engineer
Ilker Demir
Ilker Demir
Dipl.-Ing.
speaks: Turkish, German, English
convex ZT GmbH, Wien
Civil engineer
Anes Dzinic
Anes Dzinic
speaks: German, Bosnian, English
convex ZT GmbH, Graz
Civil engineer
responsible for 3D-print and drone flight
Konrad Edegger
Konrad Edegger
Dipl.-Ing. (FH)
speaks: German, English
convex ZT GmbH, Graz
Division Manager
responsible for training and education
Konrad Edegger studied construction design and management at the FH Joanneum Graz. He is division manager for special issues since 2016.
Ertan Ertekin
Ertan Ertekin
BSc
speaks: German, English, Turkish, Russian
convex ZT GmbH, Kuopio
Site supervisor
Madjid Fazeli
Madjid Fazeli
Dipl.-Ing.
speaks: Persian, German
Madjid Fazeli e.U., Graz
Civil engineer
Madjid Fazeli studied civil engineering at the Graz University of Technology. He is co-founder of the engineering practice Fazeli-Wolfesberger Ingenieure GesBR. Madjid Fazeli joined convex ZT GmbH working self-employed in 2014.
Tom Friedner
Tom Friedner
speaks: Hebrew, German, English
convex ZT GmbH, Graz
Civil engineer
Salman Gandarov
Salman Gandarov
BSc
speaks: Spanish, Adyghe, Russian, English
convex ZT GmbH, Graz
Civil engineer
Robert Gaspar
Robert Gaspar
Ing.
speaks: German, English
convex ZT GmbH, Graz
Civil engineer
Sandra Heiligenbrunner
Sandra Heiligenbrunner
Dipl.-Ing.
speaks: German, English
convex ZT GmbH
Authorised officer
Division Manager
responsible for Human Ressources
Sandra Heiligenbrunner completed an apprenticeship in technical drafting, and studied civil engineering at the FH Campus Vienna and after that at the FH Joanneum Graz. She is division manager for building construction since 2016 and authorised officer since 2017.
Thomas Heinz
Thomas Heinz
Ing.
speaks: German, English
Stahlbauplanung Heinz, Kreuzlingen
Civil engineer
Anita Hiden
Anita Hiden
speaks: German, English
convex ZT GmbH, Graz
Office Management
Viktoria Hofer
Viktoria Hofer
Ing.
speaks: German, English
convex ZT GmbH, Graz
Engineer
responsible for team- and project photography
Andrea Hofer
Andrea Hofer
Dipl.-Ing.
speaks: German, English
convex ZT GmbH, Graz
Architect
Marina-Edvina Iosu
Marina-Edvina Iosu
Dipl.-Ing.
speaks: Romanian, English
convex consulting engineers s.r.l., Cluj-Napoca
Engineer
Muhannad Kassem
Muhannad Kassem
BSc
speaks: Arabic, German, English
convex ZT GmbH, Graz
Civil engineer
Emrah Kemaloglu
Emrah Kemaloglu
Dipl.-Ing.
speaks: Turkish, German, English
Emrah Cagatay Kemaloglu e.U., Wien
Civil engineer
BaÅŸak Keser
Başak Keser
MSc in Environmental Engineering
speaks: Turkish, English
convex Ltd. Åžti., Istanbul
Senior specialist sales & business development
Martina Klinger
Martina Klinger
speaks: German
convex ZT GmbH, Graz
Office Management
Juraj Kmetko
Juraj Kmet'ko
Ing.
speaks: Slovakian, English
convex ZT GmbH, Bratislava
Engineer
Sucheta Kolhatkar
Sucheta Kolhatkar
Technician
speaks: Marathi, Hindi, Japanese, English, German
convex ZT GmbH, Graz
Civil engineer
Natalie Kraxner
Natalie Kraxner
Ing.
speaks: German, English
convex ZT GmbH, Graz
Project Manager
currently on parental leave
Claudia Lackner
Claudia Lackner
Ing.
speaks: German, English
convex ZT GmbH, Graz
Engineer
Thomas Laggner
Thomas Laggner
Dipl.-Ing. Dr.techn.
speaks: German, English
convex ZT GmbH, Graz
Project Manager
Thomas Laggner studied civil engineering at the Graz University of Technology, and made halso is PhD there. Thomas Laggner is teaching Reinforced Concrete Construction at the FH Joanneum Graz since 2022.
Jürgen Lohmann
Juergen Lohmann
Ing.
speaks: German, English
convex ZT GmbH, Graz
Division Manager
responsible for IT
Jürgen Lohmann graduated from the HTBLA Ortweinplatz in Graz. He is division manager for construction design since 2016.
Liebhard Mattuschka
Liebhard Mattuschka
MSc
speaks: German, English
clone:it GmbH, Graz
Civil engineer
Ana Muzic
Ana Muzic
MSc
speaks: Croatian, English, Italian, German
convex ZT GmbH, Graz
Structural engineer
Wolfgang Nesitka
Wolfgang Nesitka
FH-Prof. Dipl.-Ing. Dr.techn.
Legally certified expert
speaks: German, English
convex ZT GmbH, Graz
Partner
Wolfgang Nesitka studied civil engineering at the Graz University of Technology, and made his PhD at the same institution. He was Technical Director at the construction Company Ed. Ast & Co. in Graz, and in the following, Head of the Study Course "Construction Design and Economics" at the FH Joanneum University of Applied Sciences in Graz. He is founding partner of convex ZT GmbH.
Erwin Neumeyer
Erwin Neumeyer
Ing.
speaks: German, English
Erwin Neumeyer, Gloggnitz
Site Superviser
Armend Nura
Armend Nura
Dipl.-Ing.
speaks: German, English, Albanian
convex ZT GmbH, Graz
Structural engineer
Rajashree Omprakash
Rajashree Omprakash
MSc
speaks: Hindi, German, English
convex ZT GmbH, Graz
Civil engineer
currently on parental leave
Ilayda Özköse
Ilayda Özköse
speaks: Turkish, English
convex Ltd. Åžti., Istanbul
Office Manager
Roland Paier
Roland Paier
Dipl.-Ing.
speaks: German, English
DIROPA IT GmbH
IT Manager
Roland Paier studied Business Informatics and is Microsoft Partner (Datacenter and Midmarket Solution Provider). Since 2004 he has been in charge of the IT infrastructure of convex ZT GmbH.
Katja Ratschiller
Katja Ratschiller
speaks: German, English
NYXAS OG
Website Designer
Katja Ratschiller is web designer. Since 2008 she is in charge of the website of convex_AT, convex_TR and convex_RO.
Yahya Saral
Yahya Saral
Dipl.-Ing.
speaks: Turkish, English
convex Ltd. Åžti., Istanbul
Survey engineer
Jakob Schadner
Jakob Schadner
BSc
speaks: German, English
convex ZT GmbH, Graz
Architect
Marinko Sekulic
Marinko Sekulic
Ing.
speaks: German, Bosnian, English
HE house of engineering OG, Graz
Electrical engineer
Murat Sezer
Murat Sezer
Technician
speaks: Turkish, English
convex Ltd. Åžti., Istanbul
Site supervisor
Süleyman Sezer
Süleyman Sezer
Dipl.-Ing.
speaks: Turkisch, English
convex Ltd. Åžti., Istanbul
Civil engineer
Izudin Sisic
Izudin Sisic
Ing.
speaks: Bosnian, German, English
convex ZT GmbH, Graz
Engineer
responsible for VR- and AR-applications
Pontus Skoog
Pontus Skoog
MSc
speaks: Swedish, German, English
Skoog e.U., Graz
Mechanical engineer
Bernd Spatzenegger
Bernd Spatzenegger
Dipl.-Ing.
speaks: German, English
p-m-consult e.U., Purkersdorf
Mechanical engineer
Roland Stickler
Roland Stickler
Dipl.-Ing.
speaks: German, English
convex ZT GmbH, Vienna
Contract manager
Ugur Sümengen
Ugur Sümengen
Dipl.-Ing.
speaks: Turkish, English
SCI Mühendislik, Istanbul
Civil engineer
Tacettin Sümer
Tacettin Sümer
Dipl.-Ing.
speaks: Turkish, English
convex Ltd. Åžti., Istanbul
Civil engineer
Tassilo Szyszkowitz
Tassilo Szyszkowitz
Dipl.-Ing. Dr.techn.
speaks: German, English
convex ZT GmbH, Graz
Partner
Tassilo Szyszkowitz studied civil engineering at the Graz University of Technology, and made his PhD at the same institution. He co-founded the engineering practice Graber-Szyszkowitz ZT GmbHÂ 1981 in Graz, Austria. Since 2006, he is partner of convex ZT GmbH.
Jennifer Thorer
Jennifer Thorer
speaks: German, English
convex ZT GmbH, Graz
Engineer
currently on parental leave
Fabian Till
Fabian Till
Dipl.-Ing.
speaks: German, English
convex ZT GmbH, Graz
Civil engineer
responsable for 360° photography
Elisabeth Uhl
Elisabeth Uhl
Ing.
speaks: German, English
convex ZT GmbH, Graz
Engineer
Timur Uzunoglu
Timur Uzunoglu
Dipl.-Ing. Dr.techn. MICE CEng
speaks: German, Turkish, English, French
convex ZT GmbH, Graz
Managing Director
responsible for quality assurance
convex consulting engineers s.r.l., Bucharest
Director
Timur Uzunoglu studied civil engineering at the Vienna University of Technology, and made his PhD at the Graz University of Technology. In 2004, he founded convex ZT GmbH. Timur Uzunoglu is teaching Industrial Construction at the FH Joanneum Graz since 2005. He represents the British "Institution of Civil Engineers" in Austria.
Laszlo Gergely-Varga
Laszlo Gergely-Varga
Dipl.-Ing.
speaks: Romanian, Hungarian, German, English
convex consulting engineers s.r.l., Cluj-Napoca
Authorised Officer
Veronika Vasileva
Veronika Vasileva
BSc
speaks: Bulgarian, English, German, Russian
convex ZT GmbH, Sophia
Architect
Paul Wegerer
Paul Wegerer
MSc
speaks: German, English
clone:it GmbH, Graz
Civil engineer
Maximilian Weiland
Maximilian Weiland
BSc
speaks: German, English
convex ZT GmbH, Graz
Civil engineer
Bernd Weyringer
Bernd Weyringer
Ing.
speaks: German, English
Weyringer e.U., Graz
Civil engineer
Murat Gökce
Murat Gökçe
Dipl.-Ing.
speaks: Turkish, German, English
convex Ltd. Åžti., Istanbul
Managing Director
Murat Gökçe studied civil engineering at the Istanbul University of Technology and in the following, at the Vienna University of Technology. After fifteen years of management experience in various international companies, he joined the convex group in 2006 as founding partner of convex Ltd. Şti.
Stephan Zwanzger
Stephan Zwanzger
speaks: German, English
convex ZT GmbH, Graz
Engineer