GEOSS is proud to present its experienced staff members, many who are leaders in their field of expertise, who together have created a dynamic, friendly and hard working team.
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JULIAN CONRAD
EXECUTIVE MANAGEMENT
Position:
Hydrogeologist (Managing Director)
Pr. Sci. Nat.: 400159/05Qualification:
MSc Hydrogeology & GISResponsibilities:
Project Overview & ManagementExperience:
Since 1985
DALE BARROW
EXECUTIVE MANAGMENT
Position:
Hydrogeologist (Director)
Pr. Sci. Nat.: 400289/13Qualification:
MSc Hydrogeology | MBAResponsibilities:
Project Overview & ManagementExperience:
Since 2008
Abigail Oellermann
Groundwater Management and Authorisation
Position:
HydrogeologistQualification:
BSc(Hons) HydrogeologyExperience:
Since 2022
Albie Charles
GIS & Modelling
Position:
HydrogeologistQualification:
MSc GeohydrologyResponsibilities:
Geohydrological Assessments, Groundwater Management and Authorisation, and Numerical ModellingExperience:
Since 2022
Ajay Larey
Position:
HydrogeologistQualification:
BSc Environmental and Water ScienceResponsibilities:
Groundwater Exploration, Drilling, Geophysical Studies and Yield TestingExperience:
Since 2023
Aqeela Parker
Groundwater Monitoring and Management
Position:
Hydrogeologist | Groundwater Monitoring and Management BU Leader
Pr. Sci. Nat.: 141418Qualification:
MSc (Cum Laude) Environmental and Water ScienceResponsibilities:
Groundwater monitoring and managementExperience:
Since 2019
Ashleigh Lakshuman
Yield and Water Quality Testing
Position:
HydrogeologistQualification:
MSc (Cum Laude) Environmental and Water ScienceResponsibilities:
Yield and Water Quality Testing ProjectsExperience:
Since 2021
Carel Burger
Exploration and Drilling
Position:
Hydrogeologist, Hydrogeophysicist & Field Geologist | Exploration and Drilling BU Leader
Pr. Sci. Nat.: 128089Qualification:
MSc Economic GeologyResponsibilities:
Groundwater Exploration, Drilling & Geophysical StudiesExperience:
Since 2020
CHRISTIAN NELL
GIS Specialist and Monitoring
Position:
GIS Specialist and Monitoring ScientistQualification:
BSc Molecular Biology and BiotechnologyResponsibilities:
GIS and groundwater monitoringExperience:
Since 2025
DANITA HOHNE
Managed Aquifer Recharge (MAR), Drought management and Shale gas specialist
Position:
Senior Hydrogeologist
SACNASP 400445/14Qualification:
MScResponsibilities:
Geohydrological development, assessment and management.Experience:
Since 2009
Ezelna Germeshuisen-Cogho
Hydrogeologist
Position:
HydrogeologistQualification:
MSc Earth SciencesResponsibilities:
Groundwater Numerical Modelling and Assessments, Groundwater Management and Authorisation.Experience:
Since 2023
Gabrielle McDuling
Data Capture and Field Assistant
Position:
WULA AssistantQualification:
MatricResponsibilities:
WULA Administrator and Data CapturerExperience:
Since 2024
HENDRÉ HENN
GIS & DATABASE MANAGEMENT
Position:
GIS & Database AnalystQualification:
BSc – Hon GeoinformaticsResponsibilities:
GIS & CartographyExperience:
Since 2018
Jaco Pretorius
Geotechnical Engineering
Position:
Geologist and Geotechnical SpecialistQualification:
MSc Earth ScienceResponsibilities:
Geotechnical investigations, groundwater exploration, including geological mapping and geophysical surveysExperience:
Since 2026
JANA OBERHOLZER
Groundwater Monitoring
Position:
HydrogeologistQualification:
BSc (Hons) Earth ScienceResponsibilities:
Groundwater monitoring and managementExperience:
Since 2025
Janneke van der Steenhoven
Water Governance
Position:
HydrogeologistQualification:
BA Hons Geography and Environmental StudiesResponsibilities:
Groundwater Management and AuthorisationExperience:
Since 2026
Johané Theron
Water Governance BU Leader
Position:
Hydrogeologist | Water Governance BU LeaderQualification:
BSc (Hons) Hydrogeology & HydrologyResponsibilities:
Groundwater Management and Authorisation, WULA team management and administration, client and government liaisonsExperience:
Since 2018
Kaylin Erasmus
Groundwater Monitoring and Management
Position:
Hydrogeologist
Cand. Sci. Nat: 152301 | GSSA: 971752Qualification:
BSc Hons Applied GeologyResponsibilities:
Groundwater Monitoring and ManagementExperience:
Since 2021
Lincoln Jordaan
Position:
HydrogeologistQualification:
MSc (Cum Laude) GeohydrologyResponsibilities:
Groundwater monitoring, management, exploration and developmentExperience:
Since 2020
LIZANNE SMIT
Water Governance, Resource Protection and Management
Position:
Integrated Groundwater Studies BU Leader
Cand. Sci. Nat: 126348Qualification:
BSc – Hon Economic GeologyResponsibilities:
Geohydrological Assessments, Data Analysis, Groundwater Management and AuthorisationExperience:
Since 2017
Louis Jonk
Geotechnical Engineering
Position:
Geologist | Geotechnical Engineering BU LeaderQualification:
MSc (Cum Laude) GeologyResponsibilities:
Geotechnical investigations, groundwater exploration, including geological mapping and geophysical surveysExperience:
Since 2018
Lusanda Ndungu
Position:
Hydrogeologist - TechnicianResponsibilities:
On-Site Borehole Yield TestingExperience:
Since 2022
Marige Strauss
Water Resources Scientist
Position:
Water Resources ScientistQualification:
BA(Hons) Geography and Environmental StudiesResponsibilities:
Groundwater Monitoring and ManagementExperience:
Since 2021
NUNENS MATANDABUZO
YIELD & WATER QUALITY TESTING
Position:
Hydrogeologist - TechnicianResponsibilities:
On-Site Borehole Yield TestingExperience:
Since 2017
MARTIN VON FINTEL
GIS and Modelling
Position:
GIS Specialist | GIS and Modelling BU Leader
GPrGISc 1552Qualification:
BSc (Hons) GeoinformaticsResponsibilities:
GIS and groundwater monitoringExperience:
Since 2020
MARVIN NICHOLAS
Groundwater Monitoring
Position:
HydrogeologistQualification:
MSc GeologyResponsibilities:
Groundwater monitoring and managementExperience:
Since 2025
Mlamli Vundla
Groundwater Monitoring
Position:
Hydrogeological AssistantQualification:
BA Degree: Environmental ManagementResponsibilities:
Groundwater monitoring and samplingExperience:
Since 2016
Philasande Rigala
Field Assistant
Position:
Hydrogeological and Geotechnical ServicesExperience:
Since 2023
REUBEN LAZARUS
YIELD & WATER QUALITY TESTING
Position:
Hydrogeologist | Yield and Water Quality Testing BU Leader
Cand. Sci. Nat.: 120711Qualification:
MSc Environmental GeochemistryResponsibilities:
Project HydrogeologistExperience:
Since 2018
Sam Schoeman
Position:
Financial ManagerQualification:
CIMA, PGDip TaxResponsibilities:
Finance and legalExperience:
Since 2010
THOMAS VILJOEN
Groundwater Exploration
Position:
Exploration HydrogeologistQualification:
BSc(Hons) GeohydrologyResponsibilities:
Groundwater Exploration, Drilling & Geophysical StudiesExperience:
Since 2023
Shane Teek
GEOTECHNICAL & EXPLORATION STUDIES
Position:
Bursar: Civil Engineering
Pr. Sci. Nat.: 126397 | GSSA: 970413Qualification:
BSc Hon - Geology | MEng (Cum Laude) Civil (Geotech)Responsibilities:
Geotechnical studies primarilyExperience:
Since 2017
ZITA Saal
Groundwater Impact and Contamination Studies
Position:
Hydrogeologist | Impact and Contamination BU LeaderQualification:
MSc GeologyResponsibilities:
Groundwater impact and contamination studies, monitoring and management, water quality assessmentsExperience:
Since 2019
ALISON MCDULING
FINANCE AND ADMINISTRATION
Position:
Office Administrator & Staff SupportResponsibilities:
All Office Administrative Duties, Staff Support and Tender Monitoring & ManagementExperience:
Since 1988
HEILIAN BAADJIES
FINANCE AND ADMINISTRATION
Position:
Accounts ClerkQualification:
National Certificate (N6) in Public RelationsResponsibilities:
All Financial Administrative DutiesExperience:
Since 2010
Kamielah Wedel
PERSONAL ASSISTANT
Position:
Personal assistance to the Company Directors and SHE ManagerResponsibilities:
Administration for the Company Directors and all Health & Safety managementExperience:
Since 1999
MINKE VAN ZYL
Project Administrator
Position:
Project planner & managerQualification:
BA – Hon with Customary Law and Development AdministrationResponsibilities:
Project Management and QuotationsExperience:
Since 2002
RONELLE WARD
FINANCE AND ADMINISTRATION
Position:
Financial assistantQualification:
BCom Finance and AccountingResponsibilities:
Full accounting functionExperience:
Since 2010
