Senior Ground Water Numerical Modeller

The Construction Index Ltd; Pretoria; On-site; ZAR 800 000 - 1 000 000; Full time

Job summary

A leading environmental consultancy is seeking a Senior Groundwater Numerical Modeller in Johannesburg, Gauteng. In this role, you will design and interpret groundwater models supporting mining assessments and environmental impact studies. The ideal candidate should have a BSc (Hons) in Hydrogeology and over 10 years of numerical modelling experience. This position offers competitive salary and opportunities for professional development.

Benefits

Competitive salary

Performance bonuses

Opportunities for professional development

Qualifications

• Minimum 10 years of experience in numerical groundwater modelling.
• Strong understanding of groundwater flow and contaminant transport modelling.
• Registered with a relevant professional body.

Responsibilities

• Develop numerical simulations of groundwater flow and quality.
• Conduct groundwater impact assessments and supply studies.
• Lead project planning, budgeting, and client liaison.

Skills

Numerical groundwater modelling

Groundwater flow and contaminant transport modelling

Hydrogeological data interpretation

Project planning and budgeting

Mentoring junior staff

Education

BSc (Hons) in Hydrogeology

Further qualifications in Chemistry or Mathematics

Tools

MODFLOW

MT3D

FeFLOW

Job description

Overview

Type: Full Time
Region: International
Town / City: Gauteng
Posted: 16 / 09 /
Listed in: Environmental Services
Reference: BBBH

• 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.

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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