Look into the future

    convex ZT GmbH is an owner-operated, interdisciplinary design office in the field of construction. Our team consists of civil engineers, architects, mechanical and electrical engineers at our locations in Graz/Austria, Istanbul/Turkey, Cluj-Napoca/Romania and Plovdiv/Bulgaria. For 40 years, we have been developing economical and sustainable solutions for construction projects in the fields of industrial construction, paper mills, thermal, biomass, hydroelectric and wind power plants, hospitals, culture and education, housing and offices, bridge construction, noise protection and renovation of historical buildings.

    We manage your construction project from its beginning to its end: we prepare feasibility studies, basic designs, cost estimates, building and commercial permit documentations, tender designs, bid comparisons and award recommendations, execution and workshop designs, we coordinate design works, supervise construction works and prepare acceptance certificates. Members of our team teach at the University of Applied Sciences FH Joanneum and work with accredited certification companies. We initiate research projects and carry them out together with technical universities, universities of applied sciences and private research institutes.

    We take care of your construction project from its beginning to its end: we create feasibility studies, basic designs, cost estimates, permit and tender designs as well as detail and workshop designs, we manage the project and supervise the construction site. With our new way of work, we offer our employees a contemporary working environment even in a full home office. With our daily online coffee breaks and our workplace health promotion tailored to the home office, we create a pleasant and inspiring working environment.

    We are a completely paperless and fully digital design office. We design everything in 3D and visualise our designs not only on screen, but also in VR (virtual reality) and AR (augmented reality). With our AR glasses, we bring the foreseen design into the field of vision of all project participants on site, thus accelerating decision-making processes. With our 3D printer, we print out the designed project to scale, making it tangible for everyone. We fly over our construction sites with our drone and create 2D and 3D photo plans, which help us to compare what has been built with what has been designed. We follow digital developments and, as early adopters, challenge ourselves using the latest technologies available on the market.


    We are a multinational and multilingual team. Our diversity leads to more ideas, perspectives and proposed solutions. Our interculturally sensitive team is very willing to perceive and respect other opinions and perspectives.



    The Styrian health prize "fit im job" is awarded once a year by the Styrian Chamber of Commerce (WKO) to companies that implement innovative measures to promote their employees' health and fitness. 2020, convex was awarded the entry-level promotion.



    Our world is growing together into a village through digital connectivity. Builders have always been on the move, and are now more so than ever. Over the last 15 years we have designed, managed and supervised industrial and power plant projects in more than 45 countries. We love this challenge...



    We meet in our online chatrooms. We make our coffee breaks online. We visit our offices virtually. We prepare digital twins of our construction projects. We use 3D-print, VR (virtual reality) and AR (augmented reality) during design and supervision. Our QM-System acc. to ISO 9001:2015 named ASK CONVEXA is online.


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