Gillian Brennan

Divisional Manager - Business Operations

Gillian Brennan is the Divisional Manager for Business Operations, leading all of Enterprise Ireland’s core business support functions. Gillian is a Chartered Accountant with 20 years’ experience across a range of Business Operations, Financial Management, and Portfolio Management roles.

Prior to joining Enterprise Ireland in 2023, Gillian spent nine years with Accenture, working with clients to prioritise, plan and deliver strategically important IT and business transformation programmes. Throughout her career, she has worked with a wide variety of companies across Public Sector, Technology and Financial Services.

Gillian is passionate about mentoring young people entering STEM and business roles. She has an MBA from Smurfit Business School, a Diploma in Corporate Finance (ICAI), is a Project Management Professional (PMI), and certified in Lean Six Sigma.

Gillian Brennan

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