Underground Geotechnical Engineer

About the role

The Underground Geotechnical Engineer provides Owner‑side technical governance and assurance for underground geotechnical and ground control functions. The role ensures safe excavation design, effective ground support, and compliance with the Underground Ground Control Management Plan and international best practice.

Key responsibilities

• Collect underground geotechnical data, perform mapping, core logging and rock mass classification (Q‑system, RMR, GSI).
• Update 3D geotechnical and rock mass models to support mine design and planning.
• Gather hydrological data and maintain groundwater models.
• Conduct stability analyses for declines, headings, stopes and pillars using software such as RS2, RS3, Unwedge and the Rocscience suite.
• Design primary support, cable bolts, shotcrete/fibrecrete and evaluate cemented rockfill interaction.
• Manage underground monitoring systems (extensometers, convergence monitoring, stress cells) and provide proactive recommendations.
• Review and validate contractor geotechnical work, conduct inspections and ensure compliance with the GCMP.
• Deliver ground‑control awareness training and mentor junior engineers.

Required profile

• Owner‑side technical governance for underground geotechnical functions.
• Responsibility for safe excavation design and ground support compliance.

Required skills

• Geotechnical mapping and core logging.
• Rock mass classification (Q‑system, RMR, GSI).
• 3D geotechnical modelling.
• Hydrological data collection and groundwater modelling.
• Stability analysis using RS2, RS3, Unwedge and Rocscience software.
• Design of primary support, cable bolts and shotcrete/fibrecrete.
• Operation of underground monitoring instrumentation (extensometers, convergence monitors, stress cells).
• Technical review of contractor ground support installations.