Convex ZT GmbH is an owner-operated, interdisciplinary design and engineering office in the construction sector with its head office in Graz, Austria and further locations in Istanbul (Turkey), Cluj-Napoca (Romania), Plovdiv (Bulgaria) and Briza (Czech Republic). Originating from the merger of several structural engineering practices founded in the 1980s, the company has more than 45 years of continuous experience and has delivered projects in over 45 countries. Its multinational team of more than 60 civil, structural, architectural, mechanical and electrical engineers works with a wide range of national and international standards, focusing on industrial facilities, paper mills, thermal, biomass, hydroelectric and wind power plants, hydrogen and power‑to‑X projects, hospitals, culture and education buildings, residential and office developments, bridges, noise barriers and renovation of historic buildings.
Convex ZT provides end‑to‑end services across the project lifecycle, including feasibility studies, basic and detailed design, cost estimates, permitting documentation, tender design, bid evaluation, contract preparation, construction management, site supervision, inspections and certifications, and specialised consulting. The firm coordinates complex industrial and power plant schemes for clients such as utilities, industrial operators and grid companies, and has contributed to projects including combined cycle power plants in Malta, Poland, Iraq and Germany, biomass and hydropower plants in Sweden, Albania and Georgia, and onshore converter stations for German North Sea wind connections. Its organisation includes dedicated divisions for architectural design, structural design, drafting, special issues and BIM.
The company operates as a fully digital, paperless design office, working in 3D and applying BIM, VR and AR, drone-based surveying and 3D printing to visualise and verify designs. Convex ZT collaborates closely with universities and research institutes, with staff teaching at FH Joanneum and engaging in applied research. It has helped launch related ventures such as movingpower, which works on green hydrogen projects and the moonriver.energy brand, as well as digital construction tools developed with clone:it.