Sergei Terzaghi
Andy O'Sullivan and Associates
principal
Sergei Terzaghi
Sergei Terzaghi graduated in 1985 from the University of Canterbury in New Zealand with a Bachelor of Engineering (Hons) in civil engineering. He started his career with Murray-North Partners in Auckland. This firm was acquired initially by Woodward-Clyde Consultants in 1993, which in turn was acquired by URS in 1998.
Sergei joined Sinclair Knight Merz in Auckland in 2000 and transferred to SKM, Sydney in 2005. He moved to Arup Sydney in 2009 which included two years based in Los Angeles, USA.
He more recently joined Andy O’Sullivan and Associates in 2024 starting the Australian arm. In the course of his career to date, he has been involved in many projects of note globally, though particularly throughout the Asia-Pacific region, and across many areas of engineering. He provided the technical expertise for the successful introduction of Deep Soil Mix Technology into New Zealand and now Trench Mix Technology in Australia.
