Our team

Our global team consists of the most experienced engineers & specialists in the mining industry - pioneers who spent nearly two decades learning from our mistakes. 


Executive Management

"There's no time like now to do things"

Geoffrey Madderson

CEO & Founder of Stark Resources


Over 15 years international experience in the Mining Industry. Has held positions in South Africa, Germany & London in Business Development, Sales and Executive Management and a Co-Founder of STARK. 

"We may build plants, but the true goal is to build people"

Jaco Prinsloo



Twenty one years working experience including detailed mechanical machine design and construction, business development and implementation experience, Petro-chemical, and mineral processing. 

"In consistency lies the victory."

Nico van Niekerk



Presenting 30 years’ experience in leading Industry Technology and Enterprise Technology Infrastructure projects. 

"Research the problem, make a plan and execute it."

Dian Heinrich Page

MD Stark Consulting Pr.Sci.Nat / M.Eng Geo Tech


Ten years of exploration and mining experience, with broad exposure to modern exploration and mining procedures in areas of mineral resource management of projects. 

"Stay curious."

Gunnar Kläschen

Head of Value Proposition Dipl Kfm


Eighteen years experience of marketing and sales in different B2B business areas for mostly international companies.  


Annelize Fouche at Stark

"Make the plant of the future happen today."

Annelize Fouchee



Ten years of mineral processing and equipment design experience, with comprehensive understanding of integration and optimisation of mineral beneficiation and bulk materials handling equipment.

Eleanore Forner at Stark Resources

"Seek out new technologies. Decarbonize where you can. Always Optimize."

Eleanore Luise Forner

Head of Energy Pr.Chem.Eng / B.Eng Hons


Fourteen years experience as a process/project engineer, with a multi-industry career, starting in nuclear (Uranium and fluorochemicals), to mining and hydrometallurgy across various metals.

"Every challenge presents an opportunity to think creatively and critically."

Dr Zac Phillips

Head of Energy Finance PhD Pr.Chem.Eng


In excess of twenty-seven years’ experience in energy and finance, working for companies such as BP, Chevron, Merrill Lynch and ING Barings, where he undertook finance or finance related roles. 

"A project is late one day at a time- Act Now!"

Rynard Brits

Mineral Resource Manager MSc Engineering Management


Ten years’ experience in hard rock OC mining and quarrying, underground stope mapping, conducting geological field studies, desktop studies and exploration. 

"Talent is good. Practice is better. Passion is best."

Jeantelle Rust

Senior Process Engineer Pr.Met Eng / M. Eng Chem Eng


Twelve years’ working experience in the mineral processing industry, entailing plant operation and management, studies, flowsheet development, plant design and execution. 

"Your mountain is waiting, so get on your way" - Dr. Seuss

James Henry Ferreira

Senior Process Engineer


Five years’ working experience in hard rock mining, quarrying and minerals processing industry, entailing mining and plant operations. 

"Don't be afraid to make a mistake, keep learning and have fun!"

Shelby Helser

Communications Associate


Extensive experience in research and writing. Proficient in strategic and intercultural communication with a deep knowledge of international relations. 


“The capacity to learn is a gift; The ability to learn is a skill; The willingness to learn is a choice.” - Brian Herbert

Jean-Pierre Smith

Director Stark Technologies B.Eng Mech Eng


Mechanical Engineer with vast experience in the mining and diamond sorting sector. Technical expertise is predominantly in the form of Project Management and Project Planning.

"If it was easy everyone would do it."

Hennie Du Plessis

Head of Product Development


32 years local and international experience in Radio Frequency (RF) Electronics in a wide variety of products.

"Think outside the box for new solutions."

Lourens De Villiers

Principal Mechanical Engineer B.Eng Mech Eng


Fifteen years of experience in engineering design, analysis, product development and fabrication.

“Make it simple, but significant.”

Reinald Liebenberg

Mechanical Design Engineer B.Eng Mech Eng


Three years of experience in mechanical design and development of prototype products with exposure to multiple fields.

"Technology is best when it brings people together."

Ryan Opperman

Mechanical Engineer B.Eng Mech Eng


Qualified Mechanical Design Engineer with experience in the mining and diamond sorting sector.


"The best way to begin is just to start."

Willem Viljoen

Senior Project Engineer B.Tech Mech Eng


Nine years of mineral processing experience, with extensive experience in bulk material handling processes and sensor based sorting.  

Mauritz Van Der Heever at Stark Resources

"Never accept failure, but learn from your mistakes."

Mauritz Van Der Heever

Project Coordinator


Ten years of experience in mining and metal industry with an extensive background in construction and project management in Africa. 

“If opportunity doesn’t knock, build a door.” – Milton Berle

Franko Terblanche

Mechanical Project Engineer


6 years of experience as a mechanical project engineer across 3 sectors. Namely Steel, modular process plants and Modular diamond sorting plants.

“A goal without a plan is just a wish"

Eduan De Langen

Electrical Engineer


Six years of electrical engineering experience in a heavy industrial environment, with comprehensive exposure to the mining and mineral processing.  

“By failing to plan you are only planning to fail.”

Wesley Dean Slabbert

Project Planner


Coming from modest beginnings as a fitter & turner apprentice with Otmar Machine Tools and growing within the engineering industry. 

"Our future success is directly proportional to our ability to understand, adopt and integrate new technology into our work."

Raymond Fourie

Process Engineer B.Eng Chem Eng


Four years working experience in the mining and minerals processing industry, entailing research and development management and design execution.

“Problems are for people who don’t seek solutions.”

Eugene Collins

Process Engineer B.Eng Chem Eng


4 years of experience in the mining and mineral processing environment with specific regard to beneficiation unit operations. 

"Continuous improvement is better than delayed perfection."

Nathan Williams

Junior Process Engineer B.Eng Chem Eng with Honours


Recently graduated Process Engineer with a keen interest and capability geared towards the fields of mineral processing, metallurgical engineering, and real-time data capturing.

“Do the best you can until you know better. Then when you know better, do better.” -Maya Angelou

Claudia Rose Hannweg

Junior Mechanical Engineer B.Eng


Completed Grade 12 in 2015 at St Mary’s DSG in Pretoria. Highlights of schooling include being awarded a scholarship in high school.

Finance & Admninistration

"If you can imagine it, you can achieve it. If you can dream it, you can become it." -William Arthur Ward

Marius Engelbrecht

Finance Manager


More than 15 years’ experience in Finance and Human Resource Management, specializing in Tax and is an active member with the South African Institute of Taxation.

"If someone offers you an amazing opportunity and you’re not sure you can do it, say yes – then learn how to do it later."

Amanda Prinsloo



20 Years of HR/Payroll experience, administrative experience in employing Cross Border (DRC, Burkina Faso, Ghana, Guinea) as well as in South Africa. 

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Locations worldwide

United Kingdom

Stark Ltd
Sovereign House,
Port Causeway
United Kingdom, CH62 4TP


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