Helping organisations thrive in complexity
Fortius Consulting partners with organisations to strengthen leadership, team performance, governance and decision-making — bringing together expertise in leadership development, high performance, strategic risk and business enablement.
Led by Marieke and Jason D’Cruz, Fortius Consulting brings complementary expertise across leadership development, elite sport, top-tier consulting, strategic risk and governance.
Our work supports organisations to build the capability, confidence and conditions required to lead well, make better decisions and deliver sustainable performance in complex environments.
Our approach
We focus on the conditions that enable leaders, teams and organisations to perform — especially in complexity, pressure and change.
See the system clearly
Performance challenges are rarely about capability alone. They emerge from the interaction between people, context and system - shaped by priorities, incentives, culture, governance and ways of working. We help leaders step back to see these dynamics clearly, so they can make better decisions, manage risk effectively and focus effort where it will have the greatest impact.
Develop adaptive leaders
In complex environments, leadership is not a set of skills — it is a practice. Leaders are required to make progress on challenges where there are no clear answers and multiple stakeholders hold competing priorities. Our work builds this adaptive capacity — strengthening the maturity, judgement and presence required to lead in real conditions, not ideal ones.
Build the capacity to lead under pressure
Sustainable performance in complex environments requires leaders who can regulate themselves, stay present, and make sound decisions under pressure. In high-demand, uncertain environments, a leader’s internal state shapes how they think, respond and lead others.
We integrate insights from leadership development, psychology and physiology to help leaders recognise these patterns and work with them — so they can remain clear, grounded and effective when it matters most.
The result is work that is grounded, practical and tailored — designed to strengthen leadership, governance and decision-making, while building the capacity to sustain performance as conditions evolve.
Our services
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Supporting leaders to grow the capacity required to perform in complexity.
Our work focuses on developing the awareness, judgement and adaptability leaders need to navigate ambiguity, make sound decisions under pressure, and inspire and mobilise others.
This includes:
1:1 and small group coaching
Leadership program and development journey design
Workshop facilitation
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Turning groups of capable individuals into aligned, high-performing teams.
We work with teams to strengthen how they operate — improving clarity, trust and accountability, while enabling productive challenge and better decision-making.
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Helping organisations strengthen governance, navigate change and build practical risk capability that enables confident decision-making and sustainable growth.
Areas of focus include:
Strategic risk and governance uplift
CPS 220 and CPS 230 implementation
Executive and Board advisory
Transformation and change enablement
Risk culture and capability development
Embedded and interim leadership support
Our approach is pragmatic, people-focused and designed to support better conversations, stronger business outcomes and more confident decision-making.
Who we are
Marieke D’Cruz is a leadership development practitioner, coach and researcher focused on how leaders build the capacity to perform in complex, high-pressure environments.
Her work brings together experience from elite sport, top-tier consulting and leadership research. As an Olympian and world champion swimmer, she developed a deep understanding of sustained performance under pressure. She later worked with organisations on strategy, transformation and performance through her experience at McKinsey & Company.
Today, Marieke partners with organisations to develop adaptive leaders and effective teams — strengthening decision-making, team dynamics and the conditions required for growth and performance. She is also undertaking PhD research exploring the intersection of leadership development, adult development and nervous system regulation — with a focus on how leaders grow the capacity to navigate complexity and make better decisions.
Marieke lives in Brisbane with her young family, and every now and then still enjoys a few laps at her local swimming pool.
Jason D’Cruz partners with leaders and teams to navigate complexity, strengthen governance and make better-informed decisions.
With experience across banking, insurance and superannuation, Jason brings a practical, collaborative and commercially grounded approach to strategic risk and business enablement. He believes risk works best when it helps people see different perspectives, ask better questions and move forward with greater clarity and confidence.
Jason has held senior strategic risk and governance roles with PwC, AMP and Commonwealth Bank, supporting organisations through transformation, regulatory change and growth.
Calm, curious and people-focused by nature, Jason enjoys great food, discovering new cuisines, coaching and being coached, a frustrating relationship with golf, and most importantly, being a dad. He also likes to remind people he married the better swimmer.
