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Michael Marcellin is the Chief Marketing Officer at Juniper Networks. With a passion for building diverse, world-class teams and a track record of delivering both creativity and rigorous execution, he has transformed Juniper Networks' marketing organization to be data-driven, differentiation-focused, and growth-obsessed — driving the company's brand forward and increasing marketing-delivered pipeline 7X.
Who is the CMO of Juniper Networks?
Michael Marcellin is the Chief Marketing Officer at Juniper Networks, where he has transformed the marketing organization by instilling a culture of taking risks, challenging the status quo, relentlessly measuring outcomes, and celebrating success. Under his leadership, Juniper Networks has seen its marketing-delivered pipeline grow 7X, earned recognition for award-winning events, and pioneered employee growth and wellness programs. His approach combines creativity with world-class execution, and he holds patents for digital e-commerce, dynamic network management, and a data science application for marketing — all in pursuit of meaningful customer impact.
Work History
Michael Marcellin's career spans marketing leadership, board advisory, and management consulting roles across the technology industry. Here is a detailed list of his work history:
- Juniper Networks: Chief Marketing Officer: March 2025 - Present
- US Ignite: Member Board of Directors: November 2012 - Present
- Talentsky: Investor and Advisor: May 2015 - Present
- Price Waterhouse Management Consultants: Senior Consultant: January 1992 - January 1994
Education History
Michael Marcellin studied at the University of Virginia, where he was recognized as a Rodman Scholar and pursued studies in Systems Engineering and French. This multidisciplinary academic foundation has informed his analytical mindset and his ability to bridge technical complexity with strategic communication throughout his career.
When did Michael Marcellin join Juniper Networks?
Michael Marcellin assumed the role of Chief Marketing Officer at Juniper Networks in March 2025. Since taking on the position, he has continued to build on the company's momentum, bringing his passion for team building, data-driven marketing, and customer-focused growth to drive Juniper Networks' marketing strategy forward.


























