From the first borehole to the final report, STS Geotechnics provides the complete technical picture your project demands — geotechnical and environmental engineering by STS, drilling and field investigation by GeoSense, delivered as one coordinated scope.
STS Geotechnics delivers geotechnical site investigation, foundation engineering, and engineering geology for commercial, residential, and infrastructure projects — signed off by Chartered Professional Engineers and backed by an in-house laboratory. .
ExploreGeoSense Drilling & Engineering is STS Geotechnics' dedicated drilling and field investigation arm — supporting STS's engineering with our own fleet, crews, and AS 1726 field logging on every project. .
ExploreDelivers expert technical advice and compliance strategies to help navigate complex regulatory landscapes while minimizing ecological impact.
ExploreSTS's NATA-accredited laboratory in Wetherill Park delivers soil, rock, and materials testing to Australian Standards — the data that calibrates every field observation and underwrites every STS Geotechnics and STS Environmental report.
ExploreDelivers real-time structural health and ground stability data to ensure safety throughout the lifecycle of critical infrastructure projects. .
ExploreDelivers high-precision terrain intelligence and 3D geospatial modeling to transform how you see, measure, and manage physical sites. .
ExploreFor more than 38+ years, the company has been providing engineering consultancy and geotechnical advice to clients across residential, commercial, and infrastructure projects throughout Australia. What began as a laboratory testing service has grown into a well-established practice delivering practical, technically sound solutions supported by decades of experience.
A significant development in the company’s history was the integration of GeoSense Drilling. GeoSense was founded and managed by Mr James Zhao since its stablishment in 2016 and operated successfully for more than ten years under his management before becoming part of the STS Group. This integration created a fully coordinated service offering, combining engineering consultancy with in-house drilling and field investigation capabilities.
Throughout its history, STS has benefited from long-serving team members who have contributed across both technical and operational roles. This continuity has helped maintain consistent standards and deep industry knowledge within the business. Today, under the leadership of Mr Mrigesh as General Manager of the STS Group (STS Geotechnics and GeoSense), the company continues to deliver geotechnical, environmental, and drilling services with the stability and experience built over nearly five decades.
With strong accreditations, comprehensive insurance coverage, and a leadership team with extensive industry experience, STS remains focused on providing clients with reliable, integrated solutions backed by proven technical capability and long-term operational strength.
Trusted by developers, builders, councils, and engineers across Australia.
We are impressed with the STS’s commitment to quality and efficiency. We were particularlyimpressed with your team’s technical expertise and emphasis on safety. The recent case study you presented highlighted STS’s capabilities and the positive impact it had onconstruction projects and how your services contributed to significant cost savings.
STS Geotechnics was entrusted with the critical task of providing geotechnical advice regarding temporary batters,retention and excavation advice, footings, and providing an efficient working platform for the CFA Piling Rigs includingearthwork supervision. STS Geotechnics' team demonstrated a genuine commitment to understanding the unique requirements of ourproject. Their ability to communicate and provide practical solutions to complex geotechnical challenges wasimpressive.
We are writing to express our utmost satisfaction with the exceptional services provided by Mrigesh and his team at STS Geotechnics. Our company, Lamond Contracting, had the pleasure of collaborating with STS Geotechnics on recent projects such as Macquarie Grove Bridge and Bong Bong Common Bridge projects that required geotechnical expertise for working platforms Geotechnical Investigation and Earthworks and Pile inspections.
Recognised by leading industry bodies and trusted by major clients across Australia's construction and infrastructure sectors.
Everything you need to know before engaging a geotechnical engineer for your project.
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