William Buck Executive and Leadership Team

June, 2026

Leadership Overview

William Buck has 4 executives leading key functions including finance, operations, people, and strategy.

Dedicated to delivering exceptional accounting and tax services, William Buck drives client success through expert financial guidance and a commitment to integrity, shaping market impact across Australia.

Leadership Roles at William Buck

  • Chief Financial Officer - Sarah Young
  • Group Chief Operating Officer - Hugh Bastiaan
  • Partner & Chief Operating Officer - Amanda Anderson
  • Chief People Officer - Maider Birett
  • Sarah Young - Chief Financial Officer

    Sarah Young, the Chief Financial Officer at William Buck, directs all financial planning and analysis. Overseeing fiscal operations, Sarah Young ensures robust financial health and strategic resource allocation across the firm. This leadership position involves managing budgets, forecasting revenue, and optimizing profitability to support the company's growth objectives. By implementing stringent financial controls, the Chief Financial Officer safeguards company assets and enhances investor confidence. The role demands meticulous attention to detail and a deep understanding of financial markets to navigate economic fluctuations and drive sustainable financial performance for William Buck.
    Sarah Young

    Hugh Bastiaan - Group Chief Operating Officer

    Hugh Bastiaan, the Group Chief Operating Officer at William Buck, orchestrates the firm's operational efficiency and strategic execution. Overseeing day-to-day business activities, Hugh Bastiaan ensures seamless service delivery and optimal resource utilization across all departments. This critical role involves refining internal processes, managing cross-functional teams, and implementing best practices to enhance productivity and client satisfaction. The Group Chief Operating Officer drives operational excellence, directly impacting the firm's ability to scale and adapt to market demands. By focusing on operational integrity, Bastiaan supports the firm's mission to provide superior accounting and tax services.

    Amanda Anderson - Partner & Chief Operating Officer

    Amanda Anderson, the Partner & Chief Operating Officer at William Buck, spearheads operational strategy and partner collaboration. Managing key operational initiatives, Amanda Anderson ensures alignment between strategic goals and execution across the partnership. This role involves optimizing service delivery models, fostering a culture of continuous improvement, and enhancing client engagement strategies. The Partner & Chief Operating Officer plays a pivotal part in driving operational scalability and maintaining the firm's high standards of service. By focusing on operational effectiveness, Anderson contributes significantly to William Buck's market position and client retention.

    Maider Birett - Chief People Officer

    Maider Birett, the Chief People Officer at William Buck, directs human capital strategy and talent management. Overseeing all aspects of employee experience, Maider Birett cultivates a high-performance culture and ensures the firm attracts and retains top talent. This leadership function involves developing comprehensive HR policies, managing employee relations, and implementing programs that foster professional growth and engagement. The Chief People Officer is essential in aligning workforce capabilities with the firm's strategic objectives, ensuring a motivated and skilled team. By prioritizing people development, Birett strengthens William Buck's foundation for sustained success and service excellence.
    Maider Birett

    Frequently Asked Questions Regarding William Buck Top Executives and Leadership Team

    Who leads William Buck?
    William Buck is led by Sarah Young (Chief Financial Officer), along with executives such as Hugh Bastiaan (Group Chief Operating Officer) and Amanda Anderson (Partner & Chief Operating Officer).
    Who is part of William Buck’s executive team?
    The executive team of William Buck includes leaders such as Sarah Young (Chief Financial Officer), Hugh Bastiaan (Group Chief Operating Officer), Amanda Anderson (Partner & Chief Operating Officer) and other senior executives.
    How many executives does William Buck have?
    William Buck has 4 executives leading key business areas.
    What roles are included in William Buck’s leadership team?
    The leadership team of William Buck includes roles such as Chief Financial Officer, Group Chief Operating Officer, Partner & Chief Operating Officer, Chief People Officer.