Opterra Competitors

Holcim Australia is a member of the Holcim group, the world's leading sustainable construction materials and solutions company committed to building progress for people and the planet. Headquartered in Zug, Switzerland, Holcim has more than 45,000 employees in 43 attractive markets - across Europe, Asia Pacific, Latin America, Middle East & Africa. Holcim offers high-valued end-to-end Building Materials and Building Solutions, from foundation and flooring to roofing and walling - powered by premium brands including, ECOPact® low-carbon concrete. Holcim Australia aims to be the most respected and successfully operated company in our industry, creating value for all of our stakeholders. As a subsidiary of one of the world's leading construction materials companies, our vision is to perfect progress as we provide the foundations for society's future. Achieving our mission involves a commitment to: -Innovative and environmentally sustainable solutions for our customers -Employees with a passion for performance -An open and collaborative corporate culture -A forward-looking organisation -A culture that promotes sustainable development -Long-term financial performance In Australia, Holcim employs approximately 3,000 people across 300 sites. We are leaders in Aggregates, Concrete and Pre-cast concrete products in Australia. Holcim Australia is officially certified as a Top Employer 2026 by the Top Employers Institute, recognising our commitment to creating a world-class workplace where people thrive. Follow us to learn more about our latest innovations and how we are contributing to our communities. Looking for a new career? #BuildProgressWithUs visit: https://www.holcim.com.au/careers

We deliver essential and sustainable water services for the benefit of the community. We put customers front of mind and contribute to liveable cities. We provide drinking water, recycled water, wastewater services and some stormwater services to more than four million people in Sydney, Illawarra and the Blue Mountains. Drinking water is sourced from a network of dams managed by Water NSW, then treated and delivered to customers' homes and businesses by Sydney Water. We are Australia's largest water utility with over 3,200 staff and an area of operations covering 12,700 square kilometres. We, a statutory State owned corporation wholly owned by the New South Wales Government, have three equal, principal objectives: - to protect public health - to protect the environment - to be a successful business.

Boral is the largest vertically-integrated construction materials company in Australia. Our network includes prized quarry and cement infrastructure, bitumen, construction materials recycling, asphalt, and concrete batching operations. We employ about 9,000 employees and contractors across our operations that span more than 360 sites nationwide. For 80 years, we’ve been building something great in Australia - rarely a day goes by that you wouldn’t pass one of our sites or trucks, enter a building, use a road, bridge, tunnel, footpath, or other critical infrastructure that our people and products have helped enable.