our TEAM



Andrew founded Fender Geophysics in 2008 with an objective of making it the premier geophysical service provider in Australia. He aims to deliver geophysical services at the highest industry standard.

Andrew has 30 years’ experience working in mineral exploration and construction. He has expertise in many geophysical techniques specialising in induced polarisation, resistivity, and electromagnetic methods.

Andrew has extensive skills in project management, project logistics and WHSMS. He has made safety a key part of the Fender culture. He has extensive experience leading and conducting fieldwork in remote Australia as well as the Amazon, Fiji, Russia and Peru.

Andrew is a member of the ASEG and Technical Committee member for the GGSSA. He makes sure that Fender is using industry best practice in all its activities. In 2018 he received the Lindsay Memorial award for being a credible and worthy ambassador for the discipline of geophysics.



Doug brings 33 years of field survey and management experience from varying geophysical perspectives. His career experience is international having worked in South Africa, Pakistan, India, China, the Middle East, Papua New Guinea and most of Asia.

Doug is a qualified surveyor having graduated from the University of Southern Queensland with an Associate Degree in Spatial Science. His surveying background is important in making sure that data acquisition is done in the right place.

Doug’s management experience is important for the overall running of the business and management of individual projects. Before joining Fender he spent 15 years in the Middle East managing a survey company that specialised in terrestrial, mobile, and airborne LiDAR. He also has worked as an operations manager for Fugro Oman and Geoterrex-Dighem.

Damian Hennessy BSc


Damian has over 28 years of experience managing international geophysical surveys and works frequently throughout Asia, South America, and the Pacific region. He is one of Fender’s most experienced survey managers and has managed large-scale projects using all main geophysical methods including induced polarisation, electromagnetic, magnetics and gravity.
Damian has strong project management experience and specialises in delivering large, complex IP surveys with large teams of field staff often in remote locations. He is adept at managing and scoping complex projects using the diverse expertise of the Fender team. He facilitates the development of the most effective methodologies allowing each team member to contribute from their specialty. His broad experience has given him the opportunity to mentor many Fender staff to ensure the highest standards are maintain during surveying.

Golden Nhunhama MSc

Survey Manager & Senior Geophysicst

Golden Nhunhama is a survey manager and senior geophysicist at Fender Geophysics. He graduated with an Honours degree in Physics from the University of Zimbabwe and an MSc in Geophysics from National University of Science and Technology in Zimbabwe in 2006. Golden has 15 years’ experience working mainly in greenfield mineral exploration, gaining experience in different geophysical methods. He has expertise with Induced Polarisation, Refraction and Passive Seismics, Magnetics, Resistivity and Electromagnetic methods. Over the years Golden has worked for consulting and data acquisition companies including Geophysics GPR International (2006 – 2010) and Fender Geophysics (2017 – current) gaining a lot of field experience. Between 2011 – 2015 he worked for AngloGold Ashanti as the country geophysicist in both DRC and Guinea. Golden is a full member of ASEG and AIG.

Phil Brown BA

Survey Manager & Senior Geophysicst

Phil Brown is a Survey Manager and Senior Geophysicist. He has been with Fender since 2015 and has over 39 years of experience. Since starting his career with Scintrex in 1980, Phil has an extensive career in managing ground geophysical surveys as a Senior Geophysicist. Phil’s wide range of experience and both as a geophysicist and a project manager are invaluable in the field.

He has managed and surveys in China and across Asia for Scintrex and has supervised surveys in South Africa, New Guinea, South West Africa and Chile. He has broad expertise across all geophysical techniques but specialises in induced polarisation and prides himself on achieving the highest quality survey results.

He received his BA from Macquarie University in 1979, has Senior Frist and Off-Road Driving qualifications, and is a volunteer with the Rural Fire Brigade.

James Daniell BSc, MSc, PhD

Senior Geophysicst

James is a highly accomplished and qualified geophysicist. He provides innovative and effective survey solutions particularly in environmental, groundwater and infrastructure projects.

He has led land and marine-based research projects and has expertise in seismic, magnetics, resistivity, pXRF and marine-based acoustic methods. He has a strong background in geological field mapping and expertise in the analysis of sediment samples.

He spent eight years as a lecturer at James Cook University (Townsville) and 11 years as a research geoscientist at Geoscience Australia (Canberra). He has over 20 years geoscientific and environmental research experience and continues his involvement in research.

James graduated from Macquarie University with a BSc in 1997 and MSc in 2000. He completed his PhD through the University of Sydney in 2011. He has a NSW Construction White Card, Senior First Aid, HR Truck Licence, and a Radiation Safety Licence.

Alan Oertel BSc (Hons)


Alan is a highly experienced geophysicist across a wide range of methodologies including induced polarisation, downhole (IP), electromagnetics, and resistivity. He has specific expertise in downhole induced polarisation (IP) and magnetotellurics.

Alan has strong project management skills. As Operations Manager, he is responsible for coordinating all project activities; keeping all team members and stakeholders up to date; and co-ordinating with clients. He manages the logistics processes for our large IP and EM surveys, including managing staff allocations, mobilisation and travel and accommodation arrangements at remote survey sites.

Alan graduated from Adelaide University in 2013 and has maintained a strong interest in applied research. His honours thesis focussed on magnetotelluric geophysical methods and he has been coordinating our joint research projects into new geophysical methods with CSIRO.

He is a member of the ASEG and has WHS General Construction Induction (white card), and Senior First Aid.

Jean-Daniel Nicolas BSc

Geophysicist & Survey Manager

Jean-Daniel joined Fender Geophysics after graduating from Macquarie University in 2015 and is currently a geophysicist and survey manager with 6 years of field experience.

He has managed EM and ground magnetic surveys across NSW and has extensive experience managing IP surveys across Australia, Fiji and the Torres Strait. His experience in Fiji and the Torres strait involved the management of large teams comprised of the local workforce.

His qualifications include senior first aid, defensive driving and Mine site supervisor

Sahala Siahaan BSc, MSc

Geophysicist & Survey Manager

Sahala is a Geophysicist and Survey Manager and has been with Fender Geophysics since 2019. He graduated with a BSc from Bandung Institute of Technology, Indonesia in 2008 and a MSc in Earth and Environmental Science from Wollongong University in 2018.

Sahala has more than 10 years of experience in Geophysical Surveys and experience in a wide range of geophysical methods such as IP, Resistivity, Magnetics, Gravity, Seismic and GPR. Sahala has worked across Australia, Indonesia, Egypt and France from small team to large team of the geophysical crew.

He has a NSW construction white card, Senior First Aid, White Card, 4WD safety qualifications.

Sarath Patabendigedara BSc, MPhil, PhD


Sarath is a highly accomplished and qualified geoscientist with ten years of experience. He is expert in geophysical and mineral-physics data acquisition, processing and evaluation; and in interpreting the physical and chemical properties of geological materials.

He also has specialist knowledge and expertise in geothermal energy and groundwater exploration using geophysical methods. His advice is important in developing practical and effective survey methodologies.

Sarath has strong project management and problem-solving skills. He is resourceful with strong practical skills in survey planning, data processing, and project management.

His postgraduate research project was to understand electrical conductivity anomalies in the deep earth for which he obtained a doctorate from Macquarie University in 2020.

Sebastian Clar (Dipl. Geophysics)


Since graduating from Kiel University, Germany, in 1995 Sebastian has experienced a wide variety of geophysical techniques, ranging from basic ground magnetics for UXO detection to seismic oceanography based on multi-channel marine seismic data.

He has extensive experience with GPR, ground and airborne magnetics, resistivity, EM, IP, seismic, and down-hole geophysics. Various work assignments have led Sebastian from his native Germany to Spain, the United Kingdom, Denmark, and the Netherlands.

He relocated to New Zealand in 2005 and since then has worked on a range of geophysical projects as well as projects in Australia and New Caledonia. Sebastian enjoys project design and management, data processing and interpretation, report creation, field work and equipment maintenance.

His hands-on experience and his high commitment to safety make him a consistently valued contributor to Fender’s projects.

WORK WITH US: employment opportunities

Fender Geophysics is frequently looking for casual field staff on geophysics crews. The role offers great opportunity for travel as we undertake surveys all over Australia and have offices in Sydney and Airlie Beach in Queensland.

The majority of surveys are in NSW, Queensland and Victoria.

The survey locations can be remote. Field stints can be up to 4 weeks. Crew stay in a range of types of accommodation from tents in field camps to country pubs and motels or mine site accommodation.

Once on a survey all meals and accommodation are paid for. Travel to site is paid for though employment is usually ex the location of employment being Sydney or Airlie Beach preferably.

Applicants must have a current drivers licence and be comfortable driving in Australia.

Preference is given to:
• People with an interested or educated in geoscience. Geology, geophysics, geotechnical.
• People with an engineering background.
• People with an electrical or mechanical trade.
• Practical people who like to engage with a team.

NB: Despite the remote nature of the work and that it is in the field of mining and minerals exploration it is ineligible as specified for work for your second year 417 visa.

However if you have completed the specified 88 days and looking to extend your Working Holiday Visa, this could be right up your alley.