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10 T-Mobile executives
These ten current and former T-Mobile executives, useful to anyone researching the T-Mobile executive team, include the company's CFO, its COO and its former CEO, along with chief officers, presidents and executive vice presidents. Readers can learn how T-Mobile's leaders run finance, operations, technology, marketing, customer care and the business group.
Professionals to explore
01—10Allan Samson
LinkedInExperience: EVP and Chief Marketing Officer · T-Mobile
EVP and Chief Marketing Officer at T-Mobile since March 2026, leading marketing for the consumer brands T-Mobile, Metro by T-Mobile and Mint Mobile, according to his profile. At T-Mobile he also held Chief Broadband Officer (2023–2026), Chief Marketing Officer - Business Group (2022–2023) and Sr. Vice President - Marketing (2016–2022).
Callie Field
LinkedInExperience: President of T-Mobile Business Group · T-Mobile
Former President of T-Mobile Business Group (2022–2025) and President, Strategic Advisor at T-Mobile (2025–2026). At T-Mobile she also held EVP & Chief Customer Experience Officer (2021–2022) and EVP of Customer Care (2016–2021). She has been a board member at Dialpad since 2023.
Christie Sandoval
LinkedInExperience: Executive Vice President and Chief Customer Officer · T-Mobile
Executive Vice President and Chief Customer Officer at T-Mobile since December 2025. At T-Mobile she also held Senior Vice President, Consumer Experience and Customer Care Operations (2022–2026), Senior Vice President, Consumer Operations (2020–2022) and Vice President, Retail Sales Operations & Experience (2017–2020).
George J. Fischer
LinkedInExperience: EVP T- Mobile Business Group , Head of Sales, Customer Experience, and Delivery · T-Mobile
EVP T-Mobile Business Group, Head of Sales, Customer Experience, and Delivery at T-Mobile since December 2025. He also held SVP of Sales, T-Mobile Business Group (2022–2025). He was Chief Relationship Management Officer & SVP Global Sales at Fiserv (2021–2022) and President, Global Enterprise at Verizon (2019–2020).
Jeff Simon
LinkedInExperience: EVP, Chief Information Officer · T-Mobile
EVP, Chief Information Officer at T-Mobile since May 2025. At T-Mobile he also held SVP, Information Technology & Cyber Security (2024–2025) and Chief Security Officer (2023–2025). He was Chief Information Security Officer (CISO) at FIS (2021–2023) and has been an advisory board member at Bugcrowd since 2024.
John Saw
LinkedInExperience: President of Technology, Chief Technology Officer · T-Mobile
President of Technology, Chief Technology Officer at T-Mobile since August 2025. At T-Mobile he also held EVP and Chief Technology Officer (2023–2025) and Executive Vice President, Advanced & Emerging Technologies (2020–2023). He has served on the board of CTIA since December 2025 and has been a Fellow of the Canadian Academy of Engineering since 2021.
Jon Freier
LinkedInExperience: Chief Operating Officer · T-Mobile
Chief Operating Officer at T-Mobile since December 2025, where his profile says he leads the orchestration of enterprise-wide transformational programs along with day-to-day business functions. At T-Mobile he was also President, U.S. Consumer Group (2021–2025), Executive Vice President, U.S. Consumer Markets (2019–2021) and Executive Vice President, U.S. Retail & Operations (2015–2019).
Mike Sievert
LinkedInExperience: CEO and President · T-Mobile
Former CEO and President of T-Mobile (2020–2025) and Vice Chairman since November 2025; he has been a director on T-Mobile's Board of Directors since 2018. At T-Mobile he was also President and COO (2018–2020) and Chief Operating Officer (2015–2020), and his profile notes his promotion from chief operating officer to CEO in May 2020.
Nestor Cano
LinkedInExperience: EVP, Transformation & Chief Information and Digital Officer · T-Mobile
EVP, Transformation & Chief Information and Digital Officer at T-Mobile since June 2023. He was also EVP, Integration and Transformation & Strategic Advisor to CEO at T-Mobile (2020–2023), Chief Operating Officer at Sprint (2017–2020) and President, European Operations at TD SYNNEX North America (2014–2017).
Peter Osvaldik
LinkedInExperience: EVP & CFO · T-Mobile
EVP & CFO at T-Mobile since July 2020; his profile describes him as T-Mobile's executive vice president and chief financial officer. At T-Mobile he was also SVP Finance & CAO (2016–2020) and VP, External Reporting & Technical Accounting (2016). He was Chief Accounting Officer at Outerwall (2014–2015) and Corporate Controller there (2013–2014).
Choose the right perspective
Match the executive's function to your question, since technology, marketing, customer care and business-group leaders see different parts of T-Mobile's decisions. Check each role's dates so you know whether the person's T-Mobile experience is current or from an earlier period.
Questions to take into the conversation
- 01How does T-Mobile decide which network and technology investments to prioritize?
- 02What does T-Mobile look for when selecting vendors or partners for its business customers?
- 03How does T-Mobile measure and improve customer care and retail experience across its brands?
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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