Results and relationships.

Caroline Dunlea is the CEO and co-founder of Co. Clare based company Core Optimisation. Caroline co-founded the award-winning digital growth and transformation agency Core Optimisation in 2015, which supports digital transformation and digital performance growth for businesses within the Irish and UK markets. Caroline brings over 15 years of experience in the Digital sector, was a 2022 finalist in the EY Entrepreneur of the Year Emerging category, is a former Chairperson of Digital Business Ireland and won the Entrepreneur Award from Dublin Tech Summit, Women in Tech in 2019.

David Brett is Co- Founder and Chief Operating Officer of Core Optimisation and has over 20 years of experience leading teams in digital and technology sectors. He has extensive experience working with both private and public sector businesses. In 2015, he co-founded Core Optimisation Ltd with Caroline Dunlea, creating a team of digital marketing experts who work with over 100 clients to enhance their digital presence through a combination of digital strategy, channel optimization, data and digital transformation.

Ger Hayden is Director of Digital at Core Optimisation, where he leads the agency's digital offering and works with clients to develop growth strategies that connect customer insight, data, creativity, technology and media. He is responsible for shaping digital strategy across the agency, helping brands identify new opportunities for growth while ensuring marketing investment delivers measurable commercial outcomes.

Brian Conlon leads the SEO and organic search offering at Core Optimisation, partnering with leading Irish and international brands to deliver sustainable digital growth. With extensive experience across SEO, content strategy, analytics and AI-driven search, Brian is responsible for developing growth strategies that increase visibility, customer acquisition and commercial performance. His work has been recognised through multiple industry awards, including European Search Award-winning campaigns, and he regularly advises senior stakeholders on digital strategy, search innovation and performance measurement.

Eleanor O'Brien is Head of Data at Core Optimisation, leading the agency's Data, Measurement and Analytics practice. She works with organisations to improve measurement, uncover customer insights and use data to make better commercial decisions. Her expertise spans analytics strategy, marketing measurement, digital analytics, attribution, conversion rate optimisation (CRO) and reporting.

Gavin Stafford is Head of Paid Media at Core Optimisation, the Dublin-based digital marketing agency named Large Agency of the Year 2025. He leads the agency’s paid media offering, taking responsibility for the strategy, set-up and day-to-day management of paid search, paid social and display campaigns across a portfolio of Irish and international clients.

As Group Marketing Director at Core Optimisation, Kieran O’Brien is responsible for all agency Communications and Marketing Strategy. Kieran has over 25 years of through the line Marketing experience having worked as Marketing Manager of Compu b (now Select Tech) and Marketing Manager of Irema Ireland in addition to working with leading advertising agencies and PR houses including DDFF&B, Grayling PR, Murray Consultants and as principal of O’Brien Communications. Kieran is graduate of the University of Limerick and the Public Relations Institute of Ireland, is a former eCommerce Chair with Retail Excellence Ireland and is a current Advisory Council Member of Digital Business Ireland

Ann O’Callaghan is the Chief People Officer at Core Optimisation, where she leads the organisation’s people strategy & cultural development. She is responsible for shaping a high performance, values driven culture through strategic HR leadership, organisational planning, policy development & compliance.