A O'Sullivan & Associates (Aust) Pty Ltd is a growing geotechnical engineering consultancy known for tackling complex infrastructure challenges. We operate across Australia and New Zealand, focusing on first principles thinking and collaborative client relationships to deliver safe, economic, and practical design solutions. We are expanding our dynamic Sydney office and seeking a high-calibre leader to join our team. Our values include accountability, collaboration, seeking simplicity, and going beyond for our clients.

About the Role

This is a key leadership position reporting directly to the Director, responsible for managing and growing our capabilities in geological engineering, rock mechanics, and tunnelling. You will play a pivotal role in shaping our technical direction, mentoring our team, and delivering exceptional outcomes on significant infrastructure projects.

Key Responsibilities

· Lead and manage complex geotechnical projects, particularly in tunnelling and rock mechanics, from initial concept through to delivery.

· Provide expert technical advice internally and to clients.

· Oversee and conduct geotechnical assessments, investigations, analyses, and design calculations.

· Develop and expand the team's technical capabilities to meet market needs in Australia and New Zealand.

· Manage project resources, budgets, scope, and ensure quality and H&S standards are met.

· Lead, mentor, and develop junior and intermediate engineering staff, fostering a culture of feedback and technical excellence.

· Establish and nurture key client relationships and contribute actively to business development and strategic direction.

· Ensure adherence to technical standards, codes of ethics (Engineers Australia & Engineering New Zealand), and our Integrated Management System.

About You

· Hold relevant tertiary qualifications in Engineering, ideally with Chartered Engineer status.

· Minimum 25 years of extensive experience in ground characterisation, excavation, and support design for complex infrastructure projects (e.g., transportation, energy/hydropower, water) across various project phases.

· Proven experience managing and delivering projects in diverse geological conditions.

· Functional expert with a growing industry reputation in geotechnical engineering, particularly rock mechanics and tunnelling.

· Demonstrated ability to lead projects and technical teams, manage resources, and mentor staff.

· Strong analytical, problem-solving, and technical reporting skills.

· Excellent communication and client relationship management abilities.

· Experience working with both owners and contractors is highly desirable.

· International project experience and the ability to travel are advantageous.

· Expertise in at least one key technical area (e.g., Hard rock Tunnelling, Site Investigation, Retaining Wall Design, Slope Stability, Foundation Design, Ground Improvement, Finite element modelling).

What We Offer

· A key leadership role in a growing, specialist consultancy.

· The opportunity to work on complex, challenging, and rewarding infrastructure projects.

· A collaborative team environment focused on technical excellence and professional development.

· Direct influence on the strategic direction of our geological engineering and tunnelling services.

· Competitive remuneration package.