John Castner

Business Director: Americas

John has over a decade’s experience in EH&S, having been responsible for setting up and growing the USA office of CMO, a leading product in this space. While he might not be able to run the 5 000 m in 14:14, like he could when he was interstate college champion way back when, John is still highly energetic and enjoying the challenge of building the IsoMetrix North American team to become our largest office.

Paul de Kock

Director: Product Strategy

The original visionary in the company, Paul saw the need for an integrated management system. In 1996, he built the first version of the software, an EMS designed around ISO14000, in Microsoft Access. Paul has been the driving force behind the evolution of IsoMetrix from an EMS tool to a SHEQ system to the current comprehensive suite of GRC solutions. Most at home in the bushveld or at the back of a canoe, Paul has a BSc (Hons) Environmental Science from the University of Natal. He was identified in 2013 by Endeavor as a High Impact Entrepreneur.

Benoit Froment

Projects Director: North America

Benoit has over a decade’s experience in implementing Enterprise solutions for the extractive industry. Prior to joining IsoMetrix, Benoit gained a strong international experience working for the United Nations Development Program. Fluent in Spanish, English and his native French, Benoit is a highly experienced project manager and business analyst. This coupled with his deep subject matter expertise in land management and socioeconomic development has made him the natural person to run our multi-national social management projects with our larger customers. When it comes to attention to detail, Benoit is in a league of his own.

Lucille Hallowes

Director: Operations

Armed with a doctorate in hydrology from the University of Natal, Lucille has been with IsoMetrix since its inception. A perfectionist’s perfectionist, Lucille can be credited with pushing our development team to develop software agile enough to give our customers what they want. She is also responsible for ensuring our processes around project, support services and quality assurance are well defined and closely adhered to.

Liza Isenberg

Executive Head: Programme Manager

Liza is organized, calm and energetic, with a very high sense of responsibility – the perfect qualities for her busy role in managing the Business Analyst, System Consultant, Test Analyst and Training teams. With IsoMetrix since July 2013, Liza is responsible for the improvement of the quality processes required to achieve results, efficient use of capacity of pooled resources, and ensuring quality standards are set and met for system build.

Cecilia Jofre

Director: Sales

Fluent in four languages, Cecilia joined IsoMetrix in April 2016. With over 20 years’ experience in GRC – gained during a long and successful career in the Corporate world (Arthur Andersen, IBM, Standard Bank) – and a co-founder of CGF Research Institute, Cecilia has a deep passion for and understanding of corporate governance and sustainability. She has a Masters in Administration Science from the University of Buenos Aires, is a Master scuba diver and dances a mean salsa.

Dennis Marketos

Managing Director

It’s always good to have a Chartered Accountant running the business. Dennis was one of the founders of IsoMetrix in 2003, and acted as a non-executive director until 2013 when he joined full time as IsoMetrix’s Managing Director. A graduate of the University of Cape Town, Dennis has been in the IT industry since 1998 and has co-founded several IT companies, including Bluekey, the largest SAP Business One partner in Africa. Dennis brings a deep understanding of what makes an IT businesses successful and has ensured the company has a solid foundation on which to base our future growth. Dennis was identified in 2013 by Endeavor as a High Impact Entrepreneur.

Paul Marketos


Paul was a co-founder of IsoMetrix in 2003. He has a degree in Computer Science as well as a Master’s degree in English Literature from the University of Cape Town. Paul started out as a programmer but over the past 17 years has focused on solution selling and business development. Happy to embrace change and things out of the ordinary, Paul once spent seven months driving a Bedford truck across Africa, and a year in a caravan touring Australia with his wife and three kids. He was identified in 2013 by Endeavor as a High Impact Entrepreneur.

Conrad Moller

Managing Director: Australia

Conrad started at IsoMetrix in 2008 and quickly developed into an all-rounder, getting involved in implementations, training, sales and account management. This experience set him up perfectly for his bold move to Australia where he set up the IsoMetrix office in Perth in 2013. Conrad is highly determined and holds customer happiness as his highest concern. He also has a fairly decent golf handicap.

Zander Rautenbach

Director: Technology

Zander, the company’s chief software architect, is the architect behind the latest, hyper-agile version of IsoMetrix. A technology genius, Zander is constantly innovating to ensure our software stays ahead of the competition. Zander joined IsoMetrix in 2008 and holds a Certificate in Scientific Computing from the International School for Scientific Computing.


Rigby Stott

Director: North America

Prior to joining IsoMetrix in 2010, Rigby has been a serial entrepreneur, helping to build a number of IT businesses over a career of more than 15 years. He has a bachelor’s degree in Development Economics. Rigby is a Director of IsoMetrix in North America and is a Subject Matter Expert in HSE, Enterprise Risk, Compliance and Social Sustainability. Not someone you would call quiet or unassuming, Rigby’s strong drive and dedication to customer satisfaction have been instrumental in a number of multi-national customers trusting IsoMetrix.

Margie Wells

Project Director

Highly energized and always looking for ways to improve systems and processes, Margie ensures that our methodologies meet world-class standards and align with the agility of the software. Margie holds a B.Compt. Hons from UNISA and is a registered Chartered Accountant. She initially joined the company as Financial Director in 2012, before directing her energies at the burgeoning task of ensuring success in our project implementations.

Steve Humphris

Sales Director: APAC

Steve has been working in the HSE/GRC enterprise software solution space for over 10 years, during which time he co-founded and sold a leading product. Steve has a bachelor of Arts (Psych) degree and a postgraduate in Marketing, where he completed a research thesis on Environmental Marketing. Steve once spent two years traveling to every wild tiger habitat in the world hoping to catch a glimpse of the animal he helps to protect from extinction. These days Steve spends his time searching for HSE software opportunities for IsoMetrix throughout the Asia Pacific Region. Steve is inspired to take the lessons he learnt from founding his original HSE software company to help build IsoMetrix Australia into the region’s most compelling and successful HSE / GRC enterprise solution

Robin Bolton

Executive Head: Sustainability

Robin has been in the environmental, social and sustainability field since 2000 as a consultant with a main focus on the mining, oil and gas and infrastructure sectors as well as with financial institutes

His key experience is in integrated management systems, water efficiencies, environmental authorizations, environmental monitoring, ESG, auditing and feasibility studies, international lending requirements, mine closure, environmental and social risks and the environmental and social license to operate.

He has taken on the role of a sustainability specialist within IsoMetrix with the designation of Executive Head Sustainability