The top CEOs in IT in Ireland

May 9, 2025
5 min read
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Ireland’s dynamic IT sector has become a hub for innovation and technological advancement, attracting global leaders and fostering homegrown talent. At the helm of this thriving industry are visionary CEOs who are shaping the future of technology not only in Ireland but also on the international stage. This article highlights the top CEOs in IT in Ireland, exploring their leadership styles, accomplishments, and the impact they have made within the tech landscape.

Cathriona Hallahan

Company: Microsoft Ireland

Cathriona Hallahan is the former Managing Director of Microsoft Ireland, where she led the company’s operations, sales, and marketing initiatives for several years. Renowned for championing diversity and inclusion in the tech sector, she played a pivotal role in growing Microsoft’s presence in Ireland. Hallahan has been recognized with numerous awards for her leadership and contribution to the Irish business community. She is also actively involved in mentoring and supporting women in technology.

Anne Sheehan

Company: Microsoft Ireland

Anne Sheehan serves as the General Manager of Microsoft Ireland, where she oversees strategic direction and business growth. With a background in both technology and telecommunications, she brings a wealth of experience from her previous leadership roles. Sheehan is known for her focus on digital transformation and customer-centric solutions. She is a strong advocate for fostering innovation and empowering teams within the organization.

Carolan Lennon

Company: Vodafone Ireland

Carolan Lennon is the CEO of Vodafone Ireland, steering the company through significant digital transformation and growth. With a solid background in telecommunications, she has driven initiatives around connectivity and customer experience. Lennon is a strong supporter of diversity in the workplace and often speaks about the importance of technology in shaping society. Her leadership has positioned Vodafone as a leading provider in the Irish market.

Jacky Fox

Company: Accenture Ireland

Jacky Fox is the Managing Director and Head of Security at Accenture Ireland, where she specializes in cybersecurity strategy and innovation. With extensive experience in risk management and digital protection, she advises major organizations on securing their digital assets. Fox is recognized as a thought leader in the cybersecurity field and frequently contributes to industry forums and conferences. She is also dedicated to mentoring emerging talent in technology.

John Purdy

Company: Ergo

John Purdy is the CEO and co-founder of Ergo, a leading Irish IT services provider. Under his leadership, Ergo has expanded its offerings in cloud computing, managed services, and digital transformation. Purdy is known for his entrepreneurial spirit and commitment to delivering innovative technology solutions. He is also active in promoting the Irish tech sector and supporting local business initiatives.

Ronan Harris

Company: Google Ireland

Ronan Harris serves as the Vice President and Head of Google Ireland, overseeing Google’s operations and business development in the region. He has played a critical role in expanding Google’s footprint in Ireland, making it a significant hub for the company in Europe. Harris is passionate about fostering digital skills and innovation across Ireland. He regularly engages with industry groups and policymakers to promote technology-driven growth.

Debbie Power

Company: IBM Ireland

Debbie Power is the Country General Manager for IBM Ireland, where she leads the company’s strategy and operations. With a strong background in technology consulting and business transformation, she focuses on driving client success through innovative solutions. Power is dedicated to advancing digital transformation across various sectors. She is also an advocate for diversity and inclusion within the tech industry.

Lorna Martyn

Company: Fidelity Investments Ireland

Lorna Martyn is the Senior Vice President and Head of Technology for Fidelity Investments Ireland. She leads large technology teams delivering innovative financial solutions and services. Martyn is recognized for her commitment to talent development and fostering a collaborative work environment. She is also a prominent advocate for women in STEM and actively supports diversity initiatives.

Paul Rellis

Company: Viatel Technology Group

Paul Rellis is the CEO of Viatel Technology Group, an Irish company specializing in connectivity, cloud, and cybersecurity services. With a distinguished career in technology and business, Rellis drives the company’s growth and innovation strategies. He is focused on delivering exceptional customer experiences and supporting digital transformation for clients. Rellis is also engaged in promoting sustainability and digital literacy in Ireland.

Alan Brown

Company: Dell Technologies Ireland

Alan Brown is the Senior Vice President and General Manager of Dell Technologies Ireland, overseeing the company’s operations and strategic initiatives in the region. He brings decades of experience in IT leadership and is committed to advancing digital transformation for customers. Brown is known for fostering a culture of innovation and teamwork within Dell. He actively supports educational and community outreach programs in Ireland.

Conclusion

The success of Ireland’s IT industry can be attributed in large part to the strategic vision and leadership of its top CEOs. Their ability to drive innovation, navigate global markets, and cultivate talented teams has positioned Ireland as a key player in the world of technology. As the digital landscape continues to evolve, these leaders will no doubt continue to influence the direction of the industry, inspiring the next generation of tech innovators.

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