Job Description

Job description
Job Opportunity: Senior Groundwater Numerical Modeller
Location: Johannesburg, Gauteng, South Africa
Job Type: Permanent | Industry: Mining & Environmental Consulting
A leading environmental consultancy is seeking a Senior Groundwater Numerical Modeller to join their Johannesburg-based team. This is an excellent opportunity for an experienced hydrogeologist to play a key role in technically challenging projects that support sustainable resource management across Africa and beyond.
As a Senior Modeller, you'll be responsible for the design, development, and interpretation of numerical groundwater models, with a focus on supporting mining-related assessments, environmental impact studies, and water use licensing. You'll work closely with a team of multidisciplinary specialists and provide technical leadership, mentoring, and strategic input on a range of water-related projects.
Key Responsibilities:

• Develop conceptual models and numerical simulations of groundwater flow and quality using tools such as MODFLOW, MT3D, or FeFLOW.
• Conduct groundwater impact assessments, supply studies, and contamination investigations.
• Collect and interpret hydrogeological data including geophysics, hydraulic testing, and hydrogeochemistry.
• Lead or contribute to project planning, budgeting, reporting, and client liaison.
• Integrate work into environmental impact assessments (EIAs) and support regulatory submissions.
• Provide mentorship and training to junior staff, and collaborate across technical teams.

Requirements:

• BSc (Hons) in Hydrogeology or a related field with Geology as a major; further qualifications in Chemistry or Mathematics advantageous.
• Minimum 10 years' experience in numerical groundwater modelling.
• Strong understanding of groundwater flow and contaminant transport modelling.
• Experience in well design, hydrogeochemical analysis, and hydraulic test interpretation.
• Registered with a relevant professional body.
• Valid driver's license and willingness to travel across Africa and internationally.

Why Apply?

• Work on complex, high-impact projects across multiple geographies.
• Join a globally active, sustainability-driven organisation.
• Competitive salary, performance bonuses, and potential for equity participation.
• Opportunities for professional development and growth.

Interested?
If you're a technical expert ready to make a meaningful contribution to sustainable water management, we'd love to hear from you.
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