Fully integrated consulting and technical expertise
Providing fit-for-purpose engineering and design
Trusted to deliver projects that solve the world’s challenges
Optimizing asset performance
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Solutions for a low-carbon future
Through our people, projects and partnerships, SIANA connects businesses and communities to advance economies and employment. We create choice and opportunity on a local and global scale.
Building a better world is our purpose. We care deeply about safety and seek to drive quality and efficiency in all that we do. We behave ethically, inclusively and responsibly for a brighter future.
We support our clients in solving critical challenges. We operate throughout the project lifecycle, from conceptual design, engineering, procurement and construction to the operations and maintenance of facilities.
Clients, partners and communities trust SIANA because we are here for the long term – delivering successful projects of both scale and significance for more than a century. From the spark of an idea to a project's completion. We can assist around the globe to provide professional and technical solutions with world-class expertise.


We deliver advanced engineering solutions through detailed technical planning, feasibility studies, and optimized design execution. Our expert teams ensure accuracy, efficiency, and compliance with global standards.

We manage end-to-end procurement by sourcing high-quality materials and equipment from trusted global suppliers. Our strategic supply chain management ensures cost efficiency and timely project delivery.

We deliver high-quality FEED packages that define project scope, cost estimates, schedules, and technical baselines. This ensures early risk mitigation and smooth transition into detailed engineering and construction.

We provide long-term plant operation, preventive maintenance, and technical support services. Our solutions extend asset life, reduce downtime, and maximize operational performance.

We deliver high-performance HVAC, electrical, fire protection, and piping systems. Our MEP solutions enhance operational efficiency, safety, and regulatory compliance.

We offer end-to-end project planning, scheduling, cost control, and risk management services. Our disciplined project governance ensures smooth execution and successful delivery of complex projects.







