Michael McCullough

Client CTO for Large Global Retailer at Cisco

Columbus, Ohio, United States

About Michael McCullough

Michael McCullough is Client CTO for Large Global Retailer at Cisco. Location: Columbus, Ohio, United States.

For over 30 years at Cisco, I've operated at the intersection of business strategy and enterprise technology—bringing a technologist's lens to shaping direction, aligning investments, and executing transformation at global scale. Today, as Client CTO for one of the largest global retailers, I partner directly with senior business and technology executives to define and evolve long-term enterprise architecture strategy. My work centers on aligning innovation and technology investments with business priorities, orchestrating complex cross-domain transformation initiatives at global scale, and leading cross-architecture designs—spanning infrastructure, applications, security, data, and operations—to deliver durable, measurable enterprise value. This builds on my earlier role helping to found and scale Cisco's global Business Architecture practice, where I advanced structured approaches to connecting strategy with execution and disciplined architectural modeling across Fortune 500 enterprises and industries. I am particularly focused on ensuring enterprise architecture decisions actively enable business growth, operational resilience, and sustained competitive advantage in dynamic global markets.

Skills

  • Network Architecture
  • Unified Communications
  • Cisco Technologies

Additional experience

  • Business Architecture Lead

    Cisco

    August 2021 – February 2026

Education

  • Business Sustainability Strategy - Online Education, MIT Sloan School of Management
  • Mastering Design Thinking - Capstone Project and Online Education, MIT Sloan School of Management