Vice Chairman / T-Mobile US
Mike Sievert is an accomplished American business executive, best known for his tenure at T-Mobile US, where he served as CEO and President from 2020 to 2025 and is currently the Vice Chairman. He is recognized as a co-architect of the company's "Un-carrier" strategy and has held senior leadership roles at major companies including Microsoft, AT&T Wireless, and E*TRADE Financial. Sievert is also an active investor and entrepreneur in the Seattle area's start-up community.
Instagram15.4K
Twitter
FacebookVice Chairman
Director, Board of Directors
CEO and President
President and COO
Chief Operating Officer
Executive VP and Chief Marketing Officer
Director, Board of Directors
Investor and Entrepreneur
Director, Board of Directors
Chief Commercial Officer and Chairman of Operating Committee
Director, Board of Directors
Director, Vice-Chair
Co-Founder, CEO
Corporate Vice President, Global Windows Group
Executive VP, Chief Marketing Officer
Director, Board of Directors Rogers Wireless
Chief Sales and Marketing Officer
Program Director, IBM PC Worldwide Product Management
Brand Management
Bachelor of Science (B.S.)
Core professional competencies derived from decades of executive leadership and strategic roles in major technology and telecommunications companies.
A summary of Mike Sievert's professional background, focusing on his executive roles at T-Mobile and key career milestones.
Yes, he is recognized as a co-architect of T-Mobile's "Un-carrier" strategy, which significantly redefined the company's market approach.
He served as the CEO and President of T-Mobile US for five years, from April 2020 until November 2025.
Before his long tenure at T-Mobile, he held senior leadership roles at major companies including Microsoft, AT&T Wireless, and E*TRADE Financial.
Mike Sievert maintains a significant professional presence on LinkedIn, where he has over 157.8K followers.
Telecommunications, Wireless, Mobile Technology, 5G Infrastructure
Consumer Electronics, Financial Services (E*TRADE), Retail (Starbucks), Venture Capital
Visionary, Challenger, Results-Oriented, Transformational, Authentic
Un-carrier Strategy, Customer-Centric, Technology Leadership, Entrepreneurial
