Lederer & Keller Competitors

Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science® to address the entire water cycle, protect and restore the environment, and design sustainable and resilient infrastructure. Tetra Tech est un chef de file mondial dans les domaines de l'eau, de l'environnement et des infrastructures durables, offrant des services techniques et d'ingénierie de qualité supérieure pour des projets à l'échelle mondiale. Grâce à ses 25 000 employés, Tetra Tech propose des solutions optimales aux problèmes les plus complexes en utilisant la science d’abord pour répondre aux besoins en matière de cycle de l'eau, en protection et restauration de l'environnement ainsi qu’en conception d’infrastructures durables et résilientes.

Neutral, independent third party For more than 150 years, TÜV Rheinland has stood for ensuring quality, safety, and efficiency in conjunction with people, the environment, and technology. As a neutral, independent third party, we test, accompany, develop, promote and certify products, plants, processes and management systems as well as services based on legal requirements and other relevant performance benchmarks and standards. In addition, TÜV Rheinland qualifies specialists and trains people for numerous companies and areas of business and life. Using knowledge meaningfully Our greatest capital is based on over 20,000 clever minds: concentrated knowledge. It is our enormous pool of experience from which the people at TÜV Rheinland create exceptional substance and inspiration for their meaningful work. The results of their work can be discovered everywhere: in tested elevators or rides, on certified toys or technical equipment, in our advice or training. No matter where - our international teams have been setting standards in terms of safety, quality and efficiency for many years.

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!