Retzer Competitors

At STRABAG around 89,000 people working on progress at more than 2,400 locations worldwide. Uniqueness and individual strengths characterise both our projects and each of us as individuals. Whether its building construction, civil engineering, road construction, underground engineering, bridge building, tunnelling, construction material production, project development or building management – we are always one step ahead so that we can become the most innovative and sustainable construction technology company in Europe. Diversity, inclusion and equal opportunities are integral to this, who we are as a company and how we work. Together we work as partners to complete projects successfully and grow with new challenges. Together we achieve great things. Let’s progress!

Driving innovation for excellence – that’s what PORR stands for for more than 150 years. With around 21,000 employees and a production output of around EUR 6.8 bn (as at 31.12.2025), it is one of the leading construction companies in Europe. As a full-service provider, PORR offers holistic construction solutions from planning and construction to operation, covering the entire construction value chain in building construction, civil engineering and infrastructure construction. PORR focuses on its home markets Austria, Germany, Switzerland, Poland, the Czech Republic, Slovakia and Romania. On selected international project markets such as Norway, the UK, Italy, the Benelux countries and Qatar, PORR contributes its expertise together with local partners, particularly in tunnel construction, railway construction and specialist civil engineering. The PORR share is listed on the Vienna Stock Exchange.

wienerberger is one of the leading providers of innovative, ecological solutions for the entire building envelope, in the fields of new build and renovation, as well as infrastructure in water and energy management. With more than 20,000 employees worldwide, wienerberger's solutions enable energy-efficient, healthy, climate-friendly and affordable living. Since 1819, we have been improving people's lives. With over 200 production sites in 28 countries, wienerberger is the world’s largest producer of bricks and the market leader in clay roof tiles in Europe as well as concrete pavers in Eastern Europe. In pipe systems, the company is one of the leading suppliers in Europe and a leading supplier of facade products in North America. At the beginning of 2024, wienerberger successfully completed the acquisition of Terreal, becoming the leading European provider of innovative all-in roofing and solar solutions, as well as solutions for the entire building envelope in Europe and North America. Innovation, Operational Excellence, as well as M&A and Portfolio Optimization are the most important pillars of wienerberger’s sustainable growth. In our core markets, Europe and North America, we are continuously expanding our main segments: new construction, renovation, and infrastructure. Total revenues in 2024 € 4.5 billion Operating EBITDA € 760 million More on Career at wienerberger: https://www.wienerberger.com/en/career.html Privacy Policy of Wienerberger AG: https://www.wienerberger.com/en/info/privacy-policy.html Imprint of Wienerberger AG: https://www.wienerberger.com/en/info/Imprint.html