William Buck Executive and Leadership Team

May, 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 innovation in the Australian market.

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 the firm's financial strategy and fiscal operations. Overseeing all aspects of financial planning, budgeting, and reporting, Young ensures robust financial health and sustainable growth for the accounting and tax services provider. This leadership role involves managing investment strategies and optimizing resource allocation across the Australian operations. By analyzing financial data, Sarah Young identifies opportunities for increased profitability and operational efficiency. The Chief Financial Officer's responsibilities extend to risk management and ensuring compliance with all financial regulations, safeguarding the firm's assets and reputation. Young's strategic financial oversight is critical to maintaining William Buck's market position and supporting its long-term objectives.
    Sarah Young

    Hugh Bastiaan - Group Chief Operating Officer

    Hugh Bastiaan, the Group Chief Operating Officer at William Buck, orchestrates the firm's operational framework across its Australian locations. Bastiaan drives efficiency improvements and manages the day-to-day execution of business strategies, ensuring seamless service delivery in accounting and tax. This role involves optimizing internal processes and resource deployment to support client needs effectively. The Group Chief Operating Officer's focus is on enhancing operational scalability and maintaining high standards of service quality. Hugh Bastiaan collaborates with other leaders to implement best practices and foster a culture of continuous improvement. By streamlining operations, Bastiaan directly contributes to the firm's ability to expand its reach and service offerings within the competitive business services sector.

    Amanda Anderson - Partner & Chief Operating Officer

    Amanda Anderson, the Partner & Chief Operating Officer at William Buck, spearheads operational excellence and strategic partnership initiatives. Anderson focuses on enhancing the delivery of accounting and tax services, ensuring alignment between operational capabilities and client expectations. This dual role involves driving key business development efforts while simultaneously refining internal operational efficiencies. The Chief Operating Officer's mandate includes overseeing project management and service delivery frameworks across various client engagements. Amanda Anderson works closely with the leadership team to identify growth opportunities and implement strategic plans that bolster the firm's market presence. Anderson's leadership ensures that William Buck consistently provides high-value solutions to its clientele.

    Maider Birett - Chief People Officer

    Maider Birett, the Chief People Officer at William Buck, directs the company's human capital strategy and talent management initiatives. Birett is responsible for cultivating a positive and productive work environment that supports the firm's accounting and tax service delivery. This leadership position involves overseeing recruitment, employee development, and retention programs designed to attract and retain top talent in the industry. The Chief People Officer ensures that organizational policies and practices align with William Buck's values and strategic objectives. Maider Birett champions initiatives that foster employee engagement and professional growth, crucial for maintaining a high-performing team. Birett's expertise is vital in building a strong organizational culture that underpins the firm's success.
    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.