Downer Group Executive and Leadership Team

September, 2026

Leadership Overview

Downer Group has 10 executives leading key functions including mining strategy, corporate ownership, financial oversight, operational management, energy infrastructure, human capital, legal compliance, and executive administration.

Committed to engineering excellence, Downer Group delivers critical infrastructure and asset management solutions across the minerals, power, and transport sectors to drive sustainable industrial growth.

Leadership Roles at Downer Group

  • Chief Executive Officer Mining - David Overall
  • Owner & Chief Executive Officer - Robert Downer
  • Chief Financial Officer - Malcolm Ashcroft
  • Chief Financial Officer, Mining, Energy & Industrial - Warwick McEvoy
  • Chief Operating Officer - Jacob Bonisch
  • Chief Operating Officer. Energy and Utilities - Luke Sullivan
  • President - Robert Gregg
  • Chief People Officer - Jan O'Neill
  • Executive Team Assistant - Estelle Germann
  • Group General Counsel & Company Secretary - Robert Regan
  • David Overall - Chief Executive Officer Mining

    David Overall, the Chief Executive Officer Mining at Downer Group, directs all strategic initiatives within the minerals and metals sector. Overseeing large-scale extraction projects, the Chief Executive Officer Mining ensures operational efficiency across diverse Australian sites. This leadership role involves managing complex engineering requirements while maintaining strict safety standards for all mining assets. By optimizing resource allocation, David Overall directly impacts the profitability of the mining division. The Chief Executive Officer Mining coordinates with the board to align extraction capabilities with global commodity demand. Through rigorous oversight of heavy equipment maintenance and site logistics, Overall secures long-term contracts with major resource producers. This executive leadership drives the expansion of service offerings in the minerals sector, ensuring the company remains a dominant force in the competitive landscape of industrial engineering and asset management.

    Robert Downer - Owner & Chief Executive Officer

    Robert Downer, the Owner & Chief Executive Officer at Downer Group, establishes the overarching vision for the entire engineering and construction enterprise. Guiding the long-term trajectory of the firm, the Owner & Chief Executive Officer monitors market trends across the power, transport, and water sectors. This leadership role involves fostering high-level partnerships with government entities and private stakeholders to secure major infrastructure projects. By maintaining a focus on sustainable growth, Robert Downer ensures the company remains resilient against economic fluctuations. The Owner & Chief Executive Officer evaluates capital investments to support the expansion of service capabilities throughout the Asia-Pacific region. Through consistent engagement with the executive team, Downer drives organizational alignment with core corporate values. This strategic direction supports the delivery of complex asset management solutions, solidifying the reputation of the firm as a leader in civil construction and industrial services.

    Malcolm Ashcroft - Chief Financial Officer

    Malcolm Ashcroft, the Chief Financial Officer at Downer Group, manages the fiscal health and capital structure of the organization. Overseeing financial reporting, tax compliance, and treasury operations, the Chief Financial Officer ensures transparency for all shareholders. This leadership role involves analyzing investment risks associated with large-scale construction and engineering projects. By implementing robust financial controls, Malcolm Ashcroft optimizes cash flow and supports the strategic objectives of the business units. The Chief Financial Officer coordinates with the executive leadership team to allocate resources effectively across the property and telecommunications sectors. Through meticulous budget management and financial forecasting, Ashcroft secures the necessary funding for technological upgrades and operational expansion. This fiscal oversight provides the stability required for the company to pursue ambitious infrastructure developments while maintaining a strong balance sheet in a volatile global market.

    Warwick McEvoy - Chief Financial Officer, Mining, Energy & Industrial

    Warwick McEvoy, the Chief Financial Officer, Mining, Energy & Industrial at Downer Group, manages the financial performance of the energy and industrial divisions. Overseeing cost structures and revenue streams for these specific sectors, the Chief Financial Officer, Mining, Energy & Industrial ensures profitability in high-stakes engineering environments. This leadership role involves conducting detailed financial audits of energy infrastructure projects to identify potential savings. By providing data-driven insights, Warwick McEvoy supports the strategic decision-making process for the executive team. The Chief Financial Officer, Mining, Energy & Industrial coordinates with operational leads to align spending with project milestones in the power and oil sectors. Through careful management of capital expenditure, McEvoy ensures that the industrial division maintains a competitive edge. This financial stewardship enables the company to invest in innovative energy solutions while delivering consistent value to stakeholders across the broader industrial landscape.

    Jacob Bonisch - Chief Operating Officer

    Jacob Bonisch, the Chief Operating Officer at Downer Group, directs the daily execution of engineering and construction projects across the transport and property sectors. Overseeing internal processes and site productivity, the Chief Operating Officer ensures that all deliverables meet rigorous quality standards. This leadership role involves streamlining supply chain logistics to reduce project timelines and costs. By fostering a culture of operational excellence, Jacob Bonisch drives efficiency across all regional teams. The Chief Operating Officer collaborates with project managers to mitigate risks and resolve technical challenges during the construction phase. Through the implementation of advanced asset management systems, Bonisch enhances the reliability of infrastructure for clients. This focus on operational performance supports the company's ability to scale services effectively, ensuring that complex engineering tasks are completed on schedule and within budget constraints for diverse industrial customers.

    Luke Sullivan - Chief Operating Officer. Energy and Utilities

    Luke Sullivan, the Chief Operating Officer. Energy and Utilities at Downer Group, directs the delivery of critical power and water infrastructure services. Overseeing field operations and technical teams, the Chief Operating Officer. Energy and Utilities ensures the seamless maintenance of utility assets for municipal and private clients. This leadership role involves managing complex regulatory requirements and safety protocols within the energy sector. By optimizing maintenance schedules, Luke Sullivan improves the reliability of power grids and water systems. The Chief Operating Officer. Energy and Utilities collaborates with engineering departments to integrate new technologies into existing utility frameworks. Through proactive management of regional service teams, Sullivan drives the expansion of the company's footprint in the utilities market. This operational focus ensures that the firm provides high-quality, uninterrupted service to communities, reinforcing the company's position as a trusted partner in essential infrastructure management.

    Robert Gregg - President

    Robert Gregg, the President at Downer Group, directs the overall business operations and market expansion strategies. Overseeing the performance of various divisions, the President ensures that the company meets its growth targets in the engineering and construction sectors. This leadership role involves identifying new market opportunities and fostering relationships with key industry partners. By aligning operational capabilities with client needs, Robert Gregg drives the successful delivery of complex infrastructure projects. The President collaborates with the executive team to refine the corporate strategy and enhance service offerings in the minerals and energy sectors. Through consistent monitoring of project outcomes, Gregg ensures that the company maintains its reputation for quality and reliability. This executive leadership supports the long-term vision of the firm, enabling the organization to adapt to changing market conditions while delivering sustainable value to clients and shareholders across the globe.

    Jan O'Neill - Chief People Officer

    Jan O'Neill, the Chief People Officer at Downer Group, directs the human capital strategy and organizational development initiatives. Overseeing talent acquisition, employee training, and workplace culture, the Chief People Officer ensures the company attracts and retains top-tier engineering talent. This leadership role involves implementing performance management systems that align individual contributions with corporate goals. By fostering an inclusive and safe work environment, Jan O'Neill drives employee engagement across all sectors. The Chief People Officer collaborates with the executive team to develop leadership pipelines and succession plans for critical roles. Through the design of comprehensive benefits and wellness programs, O'Neill supports the workforce in delivering high-quality construction and asset management services. This focus on human resources ensures that the organization maintains the skilled personnel necessary to execute complex projects and sustain long-term growth in the competitive engineering industry.
    Jan O'Neill

    Estelle Germann - Executive Team Assistant

    Estelle Germann, the Executive Team Assistant at Downer Group, coordinates the administrative functions that support the senior leadership team. Overseeing scheduling, meeting logistics, and internal communications, the Executive Team Assistant ensures that the executive office operates with maximum efficiency. This leadership role involves managing complex calendars and facilitating information flow between departments. By streamlining administrative processes, Estelle Germann allows the executive team to focus on strategic decision-making and project oversight. The Executive Team Assistant acts as a primary point of contact for internal and external stakeholders, ensuring that all inquiries are addressed promptly. Through meticulous organization and attention to detail, Germann supports the smooth execution of corporate initiatives across the minerals, power, and transport sectors. This administrative support is essential for maintaining the operational rhythm of the company, enabling the leadership team to effectively manage the diverse demands of the engineering and construction business.

    Robert Regan - Group General Counsel & Company Secretary

    Robert Regan, the Group General Counsel & Company Secretary at Downer Group, directs all legal affairs and corporate governance activities. Overseeing regulatory compliance, contract negotiations, and risk management, the Group General Counsel & Company Secretary ensures the company adheres to all legal standards in the construction and engineering sectors. This leadership role involves advising the board on governance matters and managing litigation risks associated with large-scale infrastructure projects. By providing expert legal counsel, Robert Regan protects the interests of the firm during complex commercial transactions. The Group General Counsel & Company Secretary coordinates with external legal partners to resolve disputes and ensure adherence to international standards. Through rigorous oversight of corporate policies, Regan maintains the integrity of the organization. This legal stewardship supports the company's ability to operate safely and ethically across diverse markets, mitigating potential liabilities while facilitating successful project delivery.

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    Frequently Asked Questions Regarding Downer Group Top Executives and Leadership Team

    Who leads Downer Group?
    Downer Group is led by David Overall (Chief Executive Officer Mining), along with executives such as Robert Downer (Owner & Chief Executive Officer) and Malcolm Ashcroft (Chief Financial Officer).
    Who is part of Downer Group’s executive team?
    The executive team of Downer Group includes leaders such as David Overall (Chief Executive Officer Mining), Robert Downer (Owner & Chief Executive Officer), Malcolm Ashcroft (Chief Financial Officer) and other senior executives.
    How many executives does Downer Group have?
    Downer Group has 10 executives leading key business areas.
    What roles are included in Downer Group’s leadership team?
    The leadership team of Downer Group includes roles such as Chief Executive Officer Mining, Owner & Chief Executive Officer, Chief Financial Officer, Chief Financial Officer, Mining, Energy & Industrial, Chief Operating Officer.