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Australian Leadership Team


Mark Alfred Headshot

Mark Alfred - General Manager

Mark is a sales and operations professional with a proven track record for delivering results in dynamic and challenging environments.

With a focus on coaching people to succeed, and change management, Mark supports and drives continuous improvement initiatives to exceed expectations and achieve financial and key performance targets.


Tim de Groot Headshot

Tim de Groot - Customer Success Manager

Real customer success comes from the heart and a desire to help and support your customers to achieve their desired outcomes. It is through Tim’s extensive experience and huge passion in customer relationship and business management that he leads this important function for simPRO Australia.

Customer success is a major focus for simPRO. Tim and his team are responsible for providing help and support to all our customers across Australia, with the goal to continually deliver value to our customers through each and every interaction with us.


Kevin Vellnagel Headshot

Kevin Vellnagel - Sales Manager

Kevin is responsible for building strategic plans and go-to-market models. He plays a major role in developing strong working relationships with key stakeholders and works with simPRO clients across multiple industries.

Kevin uses his expertise and knowledge to coach and develop a national sales team.


Tim Ziehl Headshot

Tim Ziehl - Implementation Manager

Responsible for managing a dynamic team of implementation experts, Tim builds tailored training packages for simPRO clients to ensure their unique needs and workflows are met.

He looks for innovative ways to streamline processes to help customers achieve the most out of their businesses.


Hayley Roberts Headshot

Hayley Roberts - Administration Manager

Hayley is responsible for day-to-day operations, promoting simPRO’s high standards of customer service.

Hayley supports her team with the planning and implementation of administrative systems and procedures related to sales, training, simTRAC and accounts.