Our Team

Our team collectively has over 50 years of geotechnical and engineering experience across a number of market sectors and are already managing over 10'000's sensors. Viorel's team is trusted in the construction, infrastructure, maintenance and engineering services industry in Australia and New Zealand - we deliver smarter data every day to allow asset owners and maintenance teams to make better decisions.



To empower our customers and clients by giving them better data to make better decisions.

At Viotel, we believe knowledge is power. By providing mining, transport and infrastructure businesses with world-class monitoring technology, we provide critical data that informs critical decisions. From minimising risks to recognising opportunities, we put the power in your hands.


  • To be an organisation where exceptional people thrive by doing meaningful things.

  • To be our customers' and clients' partner of choice.

  • To become a world leader in the Industrial Internet of Things, enabling industry into a connected future

Our Values

We are Contemporary -   we demonstrate this through thought leadership, perspective,
relevance and authenticity.

We are Different -   we are prepared to challenge the norm, we are innovative and courageous,
and we are prepared for disruption.

We are Thoughtful - we think before we act, and in so doing are honest, fair, ethical and

  • we do the right thing, always
  • for us, business is about more than just profits, we believe in people
  • we go the extra mile, for our clients, employees, partners and the community

Meet Our Experienced Team

Dan O’Toole - Chairman

Dan O'Toole - Viotel

Dan brings with him years of experience as a Director and Chief Executive Officer. Dan is a global business leader, engineer and mining consultant and has built a successful business operating in Asia-Pacific, North & South America, and Africa.

Linkedin: Dan O'Toole 

Dr Richard Lynch - Director

Richard is an accomplished scientist with over 19 years experience in technology development and applications in the resource sector. An expert in remote monitoring for seismology applications. Richard has business management experience in South America, North America, Africa and Australia.

LinkedIn: Richard Lynch

Ralf Muller - CEO and Director

Ralf Muller - Viotel

Ralf is an experienced tech start-up entrepreneur and has worked in the New Zealand angel investment and science commercialisation field for many years.

LinkedIn: Ralf Muller  

Bob Gregg - Executive Director

Bob Gregg

Bob's experience in business spans senior executive and technical roles over 30 years. His experience encompasses a broad range of industries, namely: mining and resources, transport infrastructure, energy and the built environment.

LinkedIn: Bob Gregg 

Craig McCloskey - CFO


Craig joins our team this month and is an accomplished finance professional who has successfully led finance teams for over 15 years, locally and internationally.

LinkedIn: Craig McCloskey

Karl Crittenden - COO

karl Crittenden

Karl brings to Viotel experience building business in the IoT space for geotechnical, structural and environmental monitoring with a strong focus on the civil infrastructure and mining industries. Karl’s career includes senior positions at Endress+Hauser and Schlumberger Australia. He has an MBA from the University of Western Australia and a Bachelor of Engineering, Honours, in Mechanical Engineering from the University of Sydney.

LinkedIn:  Karl Crittenden

Tom Horn - Project Engineer

Tom Horn

A mechatronics engineer by education; Tom brings a diverse range of electrical, mechanical and control systems knowledge from his years consulting in the high-risk amusement park industry, aviation ground equipment and mining industries. His dual Mechatronics and Robotics major has given him a unique perspective on safety and automation.

LinkedIn: Tom Horn

Alan Lucas - Senior Scientist

Alan Lucas

Dr Alan Lucas is Viotel's senior scientist and holds a PhD in  Physics from the University of Auckland. His speciality is seismology and complex vibration analysis in geotechnical and geothermal events.

LinkedIn: Alan Lucas

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