About JK Group

We are an equal opportunity employer and pride ourselves on encouraging participation and staff development through training and mentoring, with an emphasis on strong succession planning. Our varied project and Client base provides for a challenging and rewarding work environment that continually tests our expertise, and offers opportunities to expand our knowledge and proficiencies.

The JK Group has a third party certified Quality Management System to comply with AS/NZS ISO 9001:2008, an Occupational Health & Safety Management System to comply with AS/NZS 4801:2001 and an Environmental Management System to comply with  AS/NZS ISO 14001:2016.

The JK Group understands the value of investing in quality employee training, including:

  • Fully accredited with Engineers Australia to train staff in order to achieve Chartered Status.
  • Offer training and participation at the Australian Contaminated Land Consultants Association (ACLCA) (NSW) (member since commencement).
  • Offer training for accreditation under the Certified Environmental Practitioner Scheme.
  • Offer a structured training program including mentoring, in-house training seminars and workshops and support to attend external training seminars or conferences.
  • Guest lecturing and presentations at some of Australia’s most reputable institutions like University of New South Wales (UNSW), Australian Catholic University (ACU) and others.

JK Geotechnics is a proud member of the Australian Geomechanics Society (AGS). Sydney Chapter committee and regularly sponsors the annual AGS symposium in Sydney.

We also believe in fostering relationships with academics, students, other consultants and Councils.  JK Geotechnics is a longstanding UNSW Industry Partner and JK Geotechnics senior staff members have presented at various structural engineering firms to advise on the geotechnical aspects of soil-structure interaction in shoring systems, presented to peak landscape architectural bodies and assisted Councils with community information exercises in relation to geotechnical aspects of coastal erosion.

Our People

Contact our Senior Staff Members for more information on the wide range of geotechnical and environmental consultancy services we can offer.

Linton Speechley

Principal Geotechnical Engineer

Linton Speechley

Principal Geotechnical Engineer

Specialising in slope stability, shoring and retention system analysis, landslide risk assessments.  Linton has wide-ranging experience on a variety of technically challenging projects in NSW and interstate and was part of the JKG peer review team for the Port Botany expansion.

Andrew Jackaman

Principal Geotechnical Engineer

Andrew Jackaman

Principal Geotechnical Engineer

Specialising in dam and levee investigations and assessments, deep basement excavations, earthworks, landslide and river bank stabilisation. Andrew’s experience extends throughout NSW and interstate. He has distinguished himself as the geotechnical lead in multi-disciplinary design teams focusing on smart, practical and cost effective solutions.

Peter Wright

Principal Geotechnical Engineer managing our Central Coast office.

Peter Wright

Principal Geotechnical Engineer managing our Central Coast office.

Peter specialises in pavement design, analysis of shoring and retention systems, with a particular interest in landslide risk assessment for residential projects and council roads.  Peter’s extensive experience consistently enables him to develop cost effective solutions for sites and projects with complex geotechnical issues.

David Treweek

Laboratory Manager and Earthworks Testing Coordinator.

David Treweek

Laboratory Manager and Earthworks Testing Coordinator.

Daniel Bliss

Principal Geotechnical Engineer

Daniel Bliss

Principal Geotechnical Engineer

Responsible for successful project management of the geotechnical investigation as part of the “Western Sydney Airport Enabling Activities”.  Daniel’s experience as the JK Group Systems Manager was invaluable in meeting the administrative requirements of the project.

Vittal Boggaram

Principal Associate Environmental Scientist/Engineer and Manager of JKE.

Vittal Boggaram

Principal Associate Environmental Scientist/Engineer and Manager of JKE.

Water and climate resilience specialist.

Brendan Page

Principal Associate Environmental Scientist and Manager of JKE.

Brendan Page

Principal Associate Environmental Scientist and Manager of JKE.

CEnvP Site Contamination Specialist.

Paul Roberts

Principal Associate Engineering Geologist

Paul Roberts

Principal Associate Engineering Geologist

Specialising in landslide risk assessments, slope stability analyses, coastal and river bank erosion assessments. Paul has moved to Queensland and is opening our Sunshine Coast office on 4 November 2019. Paul can be contacted for all your projects’ geotechnical and engineering geological requirements in south-eastern Queensland and will be fully supported by our head office in Sydney.

Woodie Theunissen

Principal Associate Geotechnical Engineer

Woodie Theunissen

Principal Associate Geotechnical Engineer

Woodie has worked on a wide variety of infrastructure, industrial, commercial and residential projects requiring a diverse range of technical capabilities.  Whilst Woodie completes a broad spectrum of work, space constraints on developable sites have required increasingly ambitious design solutions to meet the client’s expectations, whilst protecting neighbouring properties and infrastructure.  As a result, Woodie’s skill set has therefore needed to focus more on 2D and 3D analysis to achieve positive outcomes for developments.  Woodie has extensive experience working collaboratively in multi disciplinary teams to assist in developing designs that meet both the client and infrastructure owner’s requirements.

Mitchell Delaney

Senior Associate Environmental Scientist at JKE.

Mitchell Delaney

Senior Associate Environmental Scientist at JKE.

Specialist in contaminated land, landfills and aged/healthcare projects.

Todd Hore

Senior Associate Environmental Engineer at JKE.

Todd Hore

Senior Associate Environmental Engineer at JKE.

Specialist in site contamination, waste and remediation.

Adrian Hulskamp

Senior Associate Geotechnical Engineer

Adrian Hulskamp

Senior Associate Geotechnical Engineer

Adrian has a wide range of experience throughout the Sydney area and beyond, meeting the needs of a broad range of public and private sector clients. Adrian has extensive experience assessing the geotechnical stability of sites for projects in the Snowy Mountains region of NSW, in accordance with the requirements of the Kosciuszko Alpine Resorts Geotechnical Policy.

Nicholas Smith

Senior Associate Geotechnical Engineer

Nicholas Smith

Senior Associate Geotechnical Engineer

Specialising in developments near road and rail corridors.  Nick has a comprehensive understanding of the geotechnical challenges associated with developing above and adjacent to rail and road corridors in the Sydney metropolitan area. He has also been involved in a number of technically challenging land-based and foreshore developments.

Ali Parsa

Associate Geotechnical Engineer

Ali Parsa

Associate Geotechnical Engineer

Ali has a PhD in Geotechnical Engineering and is our primary geotechnical analysis engineer specialising in 2D and 3D FE analysis of all manner of technically challenging developments with a complex range of geotechnical issues.

Matthew Pearce

Associate Geotechnical Engineer

Matthew Pearce

Associate Geotechnical Engineer

Matt has been involved in the construction stages of a number of large projects including the UTS ITE Building. He was also JKG’s project manager for the viaduct section of the Metro North West Line. Matt provides geotechnical advice for all types of projects from design development through to construction.

Katrina Taylor

Associate Environmental Scientist at JKE.

Katrina Taylor

Associate Environmental Scientist at JKE.

Hazardous materials and contaminated land specialist. Licensed Asbestos Assessor.

Bruce Walker

Formerly a Principal Geotechnical Engineer and Director of JKG.

Bruce Walker

Formerly a Principal Geotechnical Engineer and Director of JKG.

Bruce is a highly respected senior member of the Sydney geotechnical community. Bruce was the Convenor of the Working Group which prepared the AGS Landslide Risk Management Guidelines first published in March 2000. Bruce now acts as an independent geotechnical consultant primarily involved in peer review and expert reports.

Paul Stubbs

Principal Engineering Geologist and former Director of JKG.

Paul Stubbs

Principal Engineering Geologist and former Director of JKG.

Paul continues to be involved in more complex and/or sensitive projects, forensic analysis of damaged structures and slope failures, projects with a high component of engineering geology, and providing expert reports.

Adrian Kingswell

Principal and Former Senior Environmental Scientist at EIS (A division of JK Group).

Adrian Kingswell

Principal and Former Senior Environmental Scientist at EIS (A division of JK Group).

Agi Zenon

Formerly a Principal Geotechnical Engineer with JKG.

Agi Zenon

Formerly a Principal Geotechnical Engineer with JKG.

Agi now acts as an independent geotechnical consultant primarily involved in select projects and expert reports associated with insurance claims and court related matters.

Contact us today to see how we can help you.