2025 Chartered Star

Manager - Consulting, Energy and Sustainability, PwC MiddleEast

Cathal O’Reilly, ACA, blends his finance expertise with sustainability-focused impact across consulting and entrepreneurship. At PwC, he supports net-zero energy transformation in the Middle East, through the set-up of a next-generation utility aimed at decarbonizing the region’s energy sector. Alongside this, Cathal's Irish social enterprise, Narcissips, champions the UN SDGs—supporting education, clean water, and responsible consumption. Cathal credits his ACA training with underpinning all facets of his sustainability work, showcasing how Chartered Accountants can drive ethical, systemic change across sectors.

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Lecturer, University of Galway 

Sophie Sweeney, ACA and Chartered Tax Advisor, integrates sustainability into education, research, and social impact, challenging her students to see sustainability as more than compliance but rather how they can contribute to meaningful systemic change. As a lecturer at University of Galway, she embeds the UN SDGs into finance and tax curricula, co-leads ESG-focused programs, and supports marginalised communities through a student-led Tax Clinic. Her ACA training underpins her ethical approach and systemic thinking, driving real-world change. Sophie’s work bridges the academic and advocacy, shaping future professionals to lead with purpose and equity.

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Financial Accountant, Boundary Brewing Cooperative

Sinéad Henry, ACA, drives community-focused ESG impact through her leadership at Boundary Brewing Cooperative, investing in local development and inclusive events. As captain and treasurer of Lurgan Ladies Rugby, she champions gender equality and access to sport. A member of IFAC’s Young Leaders Collective, she promotes sustainable reporting among emerging professionals. Her academic excellence and involvement in a diverse range of initiatives, both personally and professionally,  reflects her commitment to shaping a more equitable, sustainable future through the Chartered Accountancy profession.

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Sinéad Hamzawi, ACA, blends risk management expertise with a deep commitment to sustainability, all with a future focused lens. Her work strengthens corporate ethics and transparency, advancing SDGs 8, 12, and 16. With a qualification in Environment, Sustainability & Climate, she integrates ESG principles across professional and community initiatives—from mentoring women leaders to shaping Ireland’s Diaspora Strategy, giving voice to global Irish on community, culture, prosperity, & education . As a Chartered Accountants Ireland committee member in Sydney, Sinéad fosters global connections and champions inclusive, forward-thinking finance rooted in ACA values.

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