Senior Geotechnical Engineer / Senior Engineering Geologist I WA

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We are seeking an Engineering Geologist/Geotechnical Engineer to support and lead components of ground investigations and geotechnical deliverables across civil, Defence, and infrastructure projects in Western Australia. This is a hands-on role suited to someone who is technically capable, field-experienced, and ready to take ownership of defined packages and work closely with senior staff.

Key responsibilities

• Plan and deliver ground investigations end-to-end, including scoping, methodology selection, scheduling, and coordination with drillers and specialist subcontractors.
• Undertake and/or supervise fieldwork (e.g., logging, sampling, in-situ testing oversight, QA of investigations) and ensure safe, compliant site execution.
• Complete engineering geology/geotechnical interpretation and reporting, including:
• Factual GI reports (logs, test schedules, QA summaries)
• Ground model development and parameter selection
• Geotechnical assessment inputs for design and construction (as required)
• Coordinate Laboratory testing programs and validate results for completeness and suitability.
• Apply strong quality and process discipline: checking, traceable calculations/assumptions, clear deliverable structure, and consistent record keeping.
• Contribute to multidisciplinary coordination with civil/structures/services teams (constructability, earthworks, pavements, drainage interfaces).
• Support client and stakeholder engagement, including briefings on findings, risks, and recommendations.

What we’re looking for

• 3–5 years post-graduate experience as an Engineering Geologist / Geotechnical Engineer.
• Minimum 2 years of ground investigation fieldwork experience (planning, supervision, logging/sampling, QA and safety).
• Strong preference for Western Australian experience, including familiarity with WA geotechnical investigation practices (local ground conditions, common investigation methods, and typical client/authority expectations).
• Sound technical writing skills and ability to produce clear, defensible deliverables.
• Proactive, organised, and detail-oriented with a genuine focus on quality.
• Exposure to Defence or high-assurance environments is advantageous (but not essential).

Why you’ll love working with us

This role provides the opportunity to lead across a broad range of geotechnical projects, apply your strong field experience, and grow your technical, project and consulting abilities over time. You’ll be part of a collaborative team that values practical thinking, technical curiosity, and professional development.

We offer a supportive and collaborative working environment, with access to mentoring, ongoing learning, and opportunities to grow your career. Our teams value flexibility, wellbeing, and work-life balance, and we encourage our people to bring their ideas, curiosity, and authentic selves to work every day.

Ready to push the limits of what’s possible?

We welcome and invite applications from individuals of all backgrounds. If you require any adjustments during the hiring process, please let us know.

Applications are reviewed as they come in, and the role may close earlier than expected, so if this opportunity sounds like you, we encourage you to apply as soon as possible.

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AECOM acknowledges the Traditional Owners and Custodians of the lands on which we, our clients and our communities live and work around Australia. We pay our respects to their cultures and to their Elders — past, present, and emerging. We are committed to connecting to Country in our work through meaningful engagement with First Nations peoples and businesses. Find out more about our Australian Reconciliation Action Plan here: Our vision for Reconciliation.

AECOM acknowledges the Traditional Owners and Custodians of the lands on which we, our clients and our communities live and work around Australia. We pay our respects to their cultures and to their Elders — past, present, and emerging. We are committed to connecting to Country in our work through meaningful engagement with First Nations peoples and businesses.  Find out more about our Australian Reconciliation Action Plan here: https://aecom.com/au/our-vision-for-reconciliation/.

About AECOM

AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy and the environment, our public- and private-sector clients trust us to solve their most complex challenges. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical and digital expertise, a culture of equity, diversity and inclusion, and a commitment to environmental, social and governance priorities. AECOM is a Fortune 500 firm and its Professional Services business had revenue of $16.1 billion in fiscal year 2025. See how we are delivering sustainable legacies for generations to come at aecom.com and @AECOM.

Freedom to Grow in a World of Opportunity 

You will have the flexibility you need to do your best work with hybrid work options. Whether you’re working from an AECOM office, remote location or at a client site, you will be working in a dynamic environment where your integrity, entrepreneurial spirit and pioneering mindset are championed.

You will help us foster a culture of equity, diversity and inclusion – a safe and respectful workplace, where we invite everyone to bring their whole selves to work using their unique talents, backgrounds and expertise to create transformational outcomes for our clients.

AECOM provides a wide array of compensation and benefits programs to meet the diverse needs of our employees and their families. We also provide a robust global well-being program. We’re the world’s trusted global infrastructure firm, and we’re in this together – your growth and success are ours too.

Join us, and you’ll get all the benefits of being a part of a global, publicly traded firm – access to industry-leading technology and thinking and transformational work with big impact and work flexibility. As an Equal Opportunity Employer, we believe in each person’s potential, and we’ll help you reach yours.