Who We Are
Onterris is a global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect.
Sectors
Access deep environmental expertise tailored to your industry, with solutions built for real-world conditions.
Solutions
Prepare for escalating environmental risks with expert solutions designed to perform under pressure.
Our Thinking
Explore briefs, perspectives and articles that turn insight into action. Discover thought leadership that informs decisions and drives impact. See the ideas shaping environmental solutions and guiding your next move.
Cuture & Careers
Where brilliant people come together to turn environmental science into real-world progress for communities, industry and the planet.

Carl Sueli

Vice President - Water Assessment and Treatment - Australia
Carl-Sueli

Carl Sueli is Vice President for Water Testing and Treatment Operations at Onterris in Australia, bringing more than 20 years of experience leading project delivery, operations and business performance across infrastructure and environmental services.

Carl has held senior management roles with a range of consulting and delivery organizations, where he has led complex programs spanning project management, operations and client delivery. He is a Certified Practicing Project Manager through the Australian Institute of Project Management and was recognized as the 2019 NSW Project Manager of the Year by the AIPM.

Carl brings a structured, outcome‑focused approach to leadership and is known for building high‑performing teams that deliver consistent results. He is a member of both the Australasian Land and Groundwater Association and the Council of Australia.