Providing integrated engineering and construction services for
stronger communities
OUR GROUP
MAPSTONE GEOTECHNICAL SERVICES
PROTEST CMT
PTG
CONSULTING
PRECISION GEOTECHNICAL SERVICES
Mapstone Geotechnical Services is a premier provider of contract drilling services throughout Australia. Guided by two industry experts, our team excels in geotechnical and environmental drilling.
We are proud to be among the few contract drillers in Australia offering Dam investigation services.
Protest leads the industry in providing comprehensive Construction Materials Testing (CMT) services, operating through a network of NATA-accredited laboratories strategically situated across Australia. Our dedicated team delivers innovative, cost-effective solutions, catering to a diverse range of sectors including infrastructure, commercial, residential, mining, and defence projects.
With a suite of highly skilled engineers and technicians, PTG Consulting provides clients with the benefit of diverse and extensive experience, unparalleled engineering expertise, and customised forward-thinking solutions. With specialist in the civil, structural, geotechnical, environmental and acoustics space, we offer our clients a one-stop engineering service.
Precision Geotechnical Testing is a recognised leader in the specialised geotechnical testing space. Our reputation for precision, integrity, and on-time project delivery sets us apart from the competition. We are committed to building long-lasting relationships based on trust, reliability, and exceptional service with our partners around Australia.
ADVISORY & EXECUTIVE TEAM
LIAM
KELLY
CEO
Liam’s deep strategic approach has enabled PTG Group to continue to grow, transform and blossom into one of the most innovative Consulting Engineering Firms in Australia. Liam understands what it takes to run a multi-faceted and dynamic engineering firm, driving continual growth across all engineering services and construction materials testing (CMT) services.
Prior to forming the business in 2015 Liam was a soil technician for Douglas Partners and Cardno Bowler and has learned the ins and outs of the Industry gaining a depth of technical knowledge from the group.
Thrown in the deep end, Liam learnt at a young age what it takes to lead from the front encompassing the qualities of a successful manager, ensuring he has a vision and knowing how to communicate and execute.
NIGEL
ALVARES
CFO
With over 15 years of experience in both public and private accounting, Nigel brings a wealth of knowledge and expertise to our organisation. His forward-thinking approach and proven track record in financial reporting, strategic planning and auditing make him a perfect fit for our team.
Nigel is a calm, strong leader who excels in building relationships across all organisational levels. His exceptional mediation and negotiation skills have been instrumental in managing shareholder and board member relationships. With extensive experience in the IT, Professional Services, Manufacturing, and Construction industries, Nigel's diverse background will be invaluable as we continue to grow and evolve.
Understanding the context of PTG Group's journey, Nigel is well-prepared to anticipate the next few years of corporate development.
Nigel's qualifications include an MBA from Deakin University, a Chartered Accountant designation from the Institute of Chartered Accountants ANZ, and a Bachelor of Commerce from the University of Auckland.
RHONDA
McSWEENEY
ADVISORY MEMBER
With over 20 years of experience in the Corporate Sector, Rhonda has held high-ranking roles in industries including Construction & Maintenance, Energy & Resources, Oil & Gas, Telecommunications, Global Retailer/Wholesaler (ASX50), and Healthcare/Manufacturing.Her experience ranges from COO to leadership in Merger & Acquisitions, Sales & Marketing, Commercial & Contracts, Operations and Logistics, Property & Infrastructure, and Corporate Services. She has also chaired an Advisory Board and served on the Board of a State Peak Sporting body.
Rhonda brings a wealth of knowledge in areas such as strategic planning, revenue growth, acquisition programs, and business reform, working with ASX, Private Equity, and Government entities.
The addition of Rhonda aligns with PTG's goals to expand its expertise and grow its business exponentially over the next three years.
PETER
BARKER
ADVISORY MEMBER
Peter is currently a Non-Executive Director of Workpac Group, Metarock Ltd and Independent Cement Group.In his executive career he spent in excess of 30 years with multinational corporations in Australia, Asia, Europe, and the USA. This included 14 years’ experience as Chief Financial Officer for large ASX listed entities including Computershare Ltd and Cardno Ltd. Peter’s extensive experience in mergers, acquisitions and company transformation aligns with Protest’s ambitious growth strategy. Peter holds a Bachelor of Commerce, an MBA, is a Graduate of the Wharton Advanced Management Program, a Fellow of CPA Australia, and a Graduate of the Australian Institute of Company Directors.
ABOUT US
PTG Group is a modern network of Australian companies revolutionising the construction and professional services sector with an integrated and innovative approach to shaping the future.
Founded in 2015 as Protest Geotechnical, PTG Group has grown into a national provider of geotechnical, construction materials testing, and engineering services. We support projects across transport, infrastructure, mining, renewables, and defence.
Our growth has been guided by a clear vision: to bring together specialist businesses that share a commitment to technical excellence, collaboration, and client success. Through carefully chosen acquisitions, we’ve expanded our capabilities and reach while preserving the strengths and heritage of each company.
Today, PTG Group continues to evolve, building a future-ready organisation that delivers trusted solutions and meaningful value to the clients and communities we serve.
250+
people and growing!
17 offices
across Australia
