gb
Glanvet Barretto

Glanvet Barretto
MSc
speaks: English, Hindi, Marathi, German

convex ZT GmbH, Graz
Structural engineer

tb
Tanja Bauer

Julian Ebeling
speaks: German, English

convex ZT GmbH, Graz
Civil engineer

sb
Srdjana Borkovic

Srdjana Borkovic
MSc
speaks: Serbian, German, English

convex ZT GmbH, Graz
Architect

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Ana-Maria Caballo

Ana-Maria Caballo
MSc
speaks: Spanish, German, English

convex ZT GmbH, Graz
Engineer

lc_neu
Lukas Cernosta

Lukas Cernosta
Dipl.-Ing.
speaks: Czech, English

Lukas Cernosta e.U., Bříza
Civil engineer

id
Ilker Demir

Ilker Demir
Dipl.-Ing.
speaks: Turkish, German, English

convex ZT GmbH, Wien
Civil engineer

ad
Anes Dzinic

Anes Dzinic
speaks: German, Bosnian, English

convex ZT GmbH, Graz
Civil engineer
responsible for 3D-print and drone flight

 

 

 

 

 

je_sw
Julian Ebeling

Julian Ebeling
speaks: German, English

convex ZT GmbH, Graz
Civil engineer

ke
Konrad Edegger

Konrad Edegger
Dipl.-Ing. (FH)
speaks: German, English

convex ZT GmbH, Graz
Division Manager special issues
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.

ee
Ertan Ertekin

Ertan Ertekin
BSc
speaks: German, English, Turkish, Russian

convex ZT GmbH, Kuopio
Site supervisor

mf
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.

tf
Tom Friedner

Tom Friedner
speaks: Hebrew, German, English

convex ZT GmbH, Graz
Civil engineer
starting with 02.2024 on educational leave for 12 months

sg
Salman Gandarov

Salman Gandarov
BSc
speaks: Spanish, Adyghe, Russian, English

convex ZT GmbH, Graz
Civil engineer

rg_square
Robert Gaspar

Robert Gaspar
Ing.
speaks: German, English

convex ZT GmbH, Graz
Civil engineer

sk
Sandra Heiligenbrunner

Sandra Heiligenbrunner
Dipl.-Ing.
speaks: German, English

convex ZT GmbH
Authorised officer
Division Manager building construction
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.

th
Thomas Heinz

Thomas Heinz
Ing.
speaks: German, English

Stahlbauplanung Heinz, Kreuzlingen
Civil engineer

ahi
Anita Hiden

Anita Hiden
speaks: German, English

convex ZT GmbH, Graz
Office Management

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Viktoria Hofer

Viktoria Hofer
Ing.
speaks: German, English

convex ZT GmbH, Graz
Engineer
responsible for team- and project photography

 

 

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Andrea Hofer

Andrea Hofer
Dipl.-Ing.
speaks: German, English

convex ZT GmbH, Graz
Architect

ei_ro
Marina-Edvina Iosu

Marina-Edvina Iosu
Dipl.-Ing.
speaks: Romanian, English

convex consulting engineers s.r.l., Cluj-Napoca
Engineer

mka
Muhannad Kassem

Muhannad Kassem
BSc
speaks: Arabic, German, English

convex ZT GmbH, Graz
Civil engineer

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Emrah Kemaloglu

Emrah Kemaloglu
Dipl.-Ing.
speaks: Turkish, German, English

Emrah Cagatay Kemaloglu e.U., Wien
Civil engineer

bk_tr
BaÅŸak Keser

Başak Keser
MSc in Environmental Engineering
speaks: Turkish, English

convex Ltd. Åžti., Istanbul
Senior specialist sales & business development

 

 

mk
Martina Klinger

Martina Klinger
speaks: German

convex ZT GmbH, Graz
Office Management

 

 

 

 

 

jk
Juraj Kmetko

Juraj Kmet'ko
Ing.
speaks: Slovakian, English

convex ZT GmbH, Bratislava
Engineer

sk_neu_small
Sucheta Kolhatkar

Sucheta Kolhatkar
Technician
speaks: Marathi, Hindi, Japanese, English, German

convex ZT GmbH, Graz
Civil engineer

nn
Natalie Kraxner

Natalie Kraxner
Ing.
speaks: German, English

convex ZT GmbH, Graz
Project Manager
currently on parental leave

 

 

 

 

 

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Claudia Lackner

Claudia Lackner
Ing.
speaks: German, English

convex ZT GmbH, Graz
Engineer

tl_2023.10.16
Thomas Laggner

Thomas Laggner
Dipl.-Ing. Dr.techn.
speaks: German, English

convex ZT GmbH, Graz
Managing Director

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. He is division manager since 2023 and managing director since 2024.

jl
Jürgen Lohmann

Juergen Lohmann
Ing.
speaks: German, English

convex ZT GmbH, Graz
Division Manager construction design
responsible for IT

Jürgen Lohmann graduated from the HTBLA Ortweinplatz in Graz. He is division manager for construction design since 2016.

lm
Liebhard Mattuschka

Liebhard Mattuschka
MSc
speaks: German, English

clone:it GmbH, Graz
Civil engineer

am
Ana Muzic

Ana Muzic
MSc
speaks: Croatian, English, Italian, German

convex ZT GmbH, Graz
Division Manager structural engineering

Ana Muzic studied civil engineering at the University of Rijeka, Croatia and at the Graz University of Technology, Austria. She is division manager for structural engineering at convex ZT GmbH since 2023.

wn
Wolfgang Nesitka

Wolfgang Nesitka
FH-Prof. Dipl.-Ing. Dr.techn.
Legally certified expert
speaks: German, English

convex ZT GmbH, Graz
Consultant

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. Wolfgang transferred his shares in convex ZT GmbH to Thomas Laggner in 2024 due to age reasons. He is still at the disposal of convex ZT GmbH as a consultant and expert.

en_neu
Erwin Neumeyer

Erwin Neumeyer
Ing.
speaks: German, English

Erwin Neumeyer, Gloggnitz
Site Superviser

an
Armend Nura

Armend Nura
Dipl.-Ing.
speaks: German, English, Albanian

convex ZT GmbH, Graz
Structural engineer

ro
Rajashree Omprakash

Rajashree Omprakash
MSc
speaks: Hindi, German, English

convex ZT GmbH, Graz
Civil engineer
currently on parental leave

noe_sw
Nazdar Özen

Nazdar Özen
BSc
speaks: Turkish, German, English

convex ZT GmbH, Graz
Civil engineer

iö_tr
Ilayda Özköse

Ilayda Özköse
speaks: Turkish, English

convex Ltd. Åžti., Istanbul
Office Manager

rp
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.

kr
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.

ts_tr
Yahya Saral

Yahya Saral
Dipl.-Ing.
speaks: Turkish, English

convex Ltd. Åžti., Istanbul
Survey engineer

js
Jakob Schadner

Jakob Schadner
BSc
speaks: German, English

convex ZT GmbH, Graz
Architect

ms
Marinko Sekulic

Marinko Sekulic
Ing.
speaks: German, Bosnian, English

HE house of engineering OG, Graz
Electrical engineer

ms_tr
Murat Sezer

Murat Sezer
Technician
speaks: Turkish, English

convex Ltd. Åžti., Istanbul
Site supervisor

 

 

 

 

 

ss_tr
Süleyman Sezer

Süleyman Sezer
Dipl.-Ing.
speaks: Turkisch, English

convex Ltd. Åžti., Istanbul
Civil engineer

izs_neu
Izudin Sisic

Izudin Sisic
Ing., BSc
speaks: Bosnian, German, English

convex ZT GmbH, Graz
Division Manager BIM
responsible for VR- and AR-applications

Izudin Sisic studied civil engineering at the Graz University of Technology, Austria. He is division manager for BIM at convex ZT GmbH since 2023.

ps
Pontus Skoog

Pontus Skoog
MSc
speaks: Swedish, German, English

Skoog e.U., Graz
Mechanical engineer

rs_square
Roland Stickler

Roland Stickler
Dipl.-Ing.
speaks: German, English

convex ZT GmbH, Vienna
Contract manager

us_tr
Ugur Sümengen

Ugur Sümengen
Dipl.-Ing.
speaks: Turkish, English

SCI Mühendislik, Istanbul
Civil engineer

ys_tr
Tacettin Sümer

Tacettin Sümer
Dipl.-Ing.
speaks: Turkish, English

convex Ltd. Åžti., Istanbul
Civil engineer

ts
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 GmbH 1981 in Graz, Austria. Since 2006, he is partner of convex ZT GmbH.

jt
Jennifer Thorer

Jennifer Thorer
speaks: German, English

convex ZT GmbH, Graz
Engineer
currently on parental leave

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Fabian Till

Fabian Till
Dipl.-Ing.
speaks: German, English

convex ZT GmbH, Graz
Civil engineer
responsable for 360° photography

eu
Elisabeth Uhl

Elisabeth Uhl
Ing.
speaks: German, English

convex ZT GmbH, Graz
Engineer

 

 

 

 

 

tu
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.

lgv_ro
Laszlo Gergely-Varga

Laszlo Gergely-Varga
Dipl.-Ing.
speaks: Romanian, Hungarian, German, English

convex consulting engineers s.r.l., Cluj-Napoca
Authorised Officer

sv_sw
(Deutsch) Stanimir Vasilev

Stanimir Vasilev
Electrical engineer (BSc), Civil engineer (MSc)
speaks: Bulgarian, English, German

convex ZT GmbH
Site manager

vv
Veronika Vasileva

Veronika Vasileva
MSc
speaks: Bulgarian, English, German, Russian

convex ZT GmbH, Sophia
Architect & Civil engineer

av_sw
(Deutsch) Adem Visne

Adem Visne
Dipl.-Ing.
speaks: Turkish, Bosnian, German, English

convex ZT GmbH, Graz
Contract manager

pw
Paul Wegerer

Paul Wegerer
MSc
speaks: German, English

clone:it GmbH, Graz
Civil engineer

mw_small
Maximilian Weiland

Maximilian Weiland
BSc
speaks: German, English

convex ZT GmbH, Graz
Civil engineer

Könntest Du mir das Doppelkinn entfernen und das Gesicht etwas schmälern?! Wenn möglich hätte ich das Foot auch gerne einmal in Farbe und mit Hintergrund
Bernd Weyringer

Bernd Weyringer
Ing.
speaks: German, English

Weyringer e.U., Graz
Civil engineer

mg_tr
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.