Margaret Rooney-McMillen

VP, Strategic Accounts, Hyperscaler & SI, AT&T

Margaret Rooney-McMillen

Speaker Bio


Margaret Rooney-McMillen is Vice President for Strategic Accounts, Hyperscalers, and System Integrators at AT&T. She is responsible for all facets of sales, contract negotiations, alliance management and go-to-market strategies for industry-leading hyperscaler and systems integrator partners to ensure growth and customer success.



Margaret is a high impact global business leader with extensive experience and deep industry knowledge in serving large enterprise customers through direct and indirect channels. Her teams have managed the breadth of technological transformations from software-defined LAN and WAN to cloud-based securing services, IoT platform deployments, and 5G and MEC services.



Over the span of her career, Margaret has led teams that have helped to drive infrastructure and network transformation for some of the largest system Integrators through complex mergers and divestitures. Her teams have also helped hundreds of global clients modernize their infrastructure by developing and deploying software-defined network  systems  across  their environments  and enabling them to transition to private and public clouds. She has a diverse background that includes positions in operations, marketing, program management, business development and sales spanning commercial and government clients.



Margaret has over 25 years of global business leadership. She is an inclusive and effective leader who drives results and achieves high levels of engagement, trust, and loyalty with customers and employees worldwide.



Margaret is a graduate of Emory & Henry College, where she received a Bachelor of Arts in Business Management. She resides with her family in Virginia where she spends time volunteering with local community charities.