Senior Ground Water Numerical Modeller

Allen & York Ltd; Gauteng; On-site; USD 40,000 - 70,000; Full time

Job summary

A leading environmental consultancy in Johannesburg seeks a Senior Groundwater Numerical Modeller to support sustainable resource management. This role offers the opportunity to engage in challenging projects while providing technical leadership and mentoring. Ideal candidates will possess significant experience in groundwater modeling and a strong educational background in hydrogeology.

Benefits

Competitive salary

Performance bonuses

Opportunities for professional development

Equity participation potential

Work on high-impact projects

Qualifications

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

Responsibilities

• Develop conceptual models and numerical simulations of groundwater flow.
• Conduct groundwater impact assessments and contamination investigations.
• Provide mentorship and training to junior staff.

Skills

Groundwater flow modelling

Contaminant transport modelling

Hydrogeochemistry

Hydraulic testing

Education

BSc (Hons) in Hydrogeology

Further qualifications in Chemistry or Mathematics

Tools

MODFLOW

MT3D

FeFLOW

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.

Allen & York - delivering Sustainable Recruitment Solutions since 1993.

About us

Allen & York have been matching purposeful people with purpose-led organisations for 30 years. We partner with our clients and candidates on roles that build an understanding of climate change, promote sustainability and create inclusive and responsible organisations, working towards a sustainable world for us all.

Committed to inclusiveness in the workplace, we aim to increase diversity across all areas and therefore welcome applications from all qualified candidates, regardless of their ethnicity, race, gender, religious beliefs, sexual orientation, age, or whether or not they have a disability.

Let us help build a better world, together.