Senior Engineering Personnel

David Duff

Principal Geotechnical Engineer

BE (Hons), MEngSc, FIEAust, CPEng, NER, RPEQ

David has over 20 years of experience working in geotechnical consultancies in Australia. He has extensive experience in investigation, design and construction of major infrastructure and transport projects as well…

David Willows

Principal Geotechnical Engineer

BE (Civil) Hons, MIEAust, CPEng, NER, A.CIRCEA

David is a Principal Geotechnical Engineer with a background in the assessment of civil engineering failures and damaged structures. David’s role involves specialist consulting services, such as landslide risk management,…

Thomas Dale

Senior Geotechnical Engineer

BEng (Civil) Hons MIEAust

Tom has over 8 years of experience in geotechnical engineering after making the transition from several years as a consulting civil and structural engineer. Tom’s role as the geotechnical operations…

Sahar Mamouri

Senior Geotechnical Engineer

BE Civil, MEngSc, CPEng, NER

Sahar is a Senior Geotechnical Engineer and has over 13 years of experience in the fields of geotechnical and civil engineering and has completed hundreds of geotechnical investigation reports for…

Denny Jacob

Senior Geotechnical Engineer

BEng (Civil) ME (Geotech) MIEAust CPEng NER

Denny has over 6 years of experience working in the United States of America, Middle East and Australia on a wide range of geotechnical and civil engineering projects. These include…

Shiv Gangele

Senior Engineering Geologist

B. Sc, M.Tech Applied Engineering Geology

Shiv has over 15 years of experience in the geotechnical field both in Australia and Overseas with a vast experience in geotechnical investigations and construction phase services on many RMS,…

Lubos Melicharek

Senior Geotechnical Engineer

BE (Mining), MIEAust, CPEng, NER

Lubos has over 20 years of experience within the geotechnical field throughout Sydney and NSW. in Australia.  He has vast and wide acquired knowledge of field investigations, drilling, coring, sampling,…

Shaun van Kal

Senior Engineering Geologist


Shaun is a Chartered Geologist (Geological Society of London) with over 12 years’ experience in the fields of engineering geology, geotechnics and geotechnical investigations. Shaun has a diverse range of…