Who is the CTO of T-Mobile?

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Updated 2026-10-23 Data as of 2026-10-23

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John Saw has been the Chief Technology Officer of T-Mobile since 2020 and reports to Srini Gopalan. Before joining T-Mobile in 2020 he was chief technology officer at Sprint, where he led the 5G rollout on its 2.5 GHz spectrum, and earlier held senior roles at AT&T, Clearwire, Netro, Nortel and Bell Northern Research. John reached the role after 3 tracked posts, most recently Chief Technology Officer at T-Mobile US. John studied at Bachelor's, master's and doctorate degrees in Electrical Engineering, McMaster University. John is one of 10 tracked leaders at the company.

John Saw profile

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John Saw
Chief Technology Officer, T-Mobile
At T-Mobile since 2020; scope widened to product engineering and cybersecurity in July 2026

Dr. John Saw is chief technology officer of T-Mobile US, leading network architecture, engineering, operations and technology labs, and since July 2026 also product engineering and cybersecurity. He founded the company's AI-RAN Innovation Center with Ericsson, Nokia and NVIDIA. He holds six patents in wireless technologies and sits on the board of CTIA.

Education
Bachelor's, master's and doctorate degrees in Electrical Engineering, McMaster University
Reports to
Srini Gopalan
Email
••••@t-mobile.com

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John Saw career history

  • Chief Technology Officer, T-Mobile US2020 to present
  • Chief Technology Officer, SprintBefore 2020
  • Senior leadership roles, AT&T, Clearwire, Netro, Nortel, Bell Northern Research

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Other leaders at T-Mobile

LeaderEmailProfile
SGSrini GopalanPresident and Chief Executive Officer ••••@t-mobile.com Profile →
POPeter OsvaldikChief Financial Officer ••••@t-mobile.com Profile →
JUJessica UhlChief Financial Officer Designate ••••@t-mobile.com Profile →
JFJon FreierChief Operating Officer ••••@t-mobile.com Profile →
AAAndré AlmeidaChief Marketing, Brand and Broadband Officer ••••@t-mobile.com Profile →
CSChris SambarChief Enterprise Officer ••••@t-mobile.com Profile →
DKDeeanne KingChief People Officer ••••@t-mobile.com Profile →
MNMark NelsonChief Legal Officer and General Counsel ••••@t-mobile.com Profile →
MSMike SievertMike SievertVice Chairman ••••@t-mobile.com Profile →

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More about T-Mobile

FAQ

Frequently asked questions

Who is John Saw?

John Saw is the Chief Technology Officer of T-Mobile (as of 2026-10-23). At T-Mobile since 2020; scope widened to product engineering and cybersecurity in July 2026. You can see their background and career history above.

What is John Saw's background?

Dr. John Saw is chief technology officer of T-Mobile US, leading network architecture, engineering, operations and technology labs, and since July 2026 also product engineering and cybersecurity. He founded the company's AI-RAN Innovation Center with Ericsson, Nokia and NVIDIA. Before joining T-Mobile in 2020 he was chief technology officer at Sprint, where he led the 5G rollout on its 2.5 GHz spectrum, and earlier held senior roles at AT&T, Clearwire, Netro, Nortel and Bell Northern Research. He holds six patents in wireless technologies and sits on the board of CTIA.

How can I contact John Saw at T-Mobile?

You can find and verify John Saw's professional email and direct phone number with Derrick, from its web app or Google Sheets. T-Mobile's addresses generally follow the first.last@t-mobile.com pattern, but that individual address is not verified here, so confirm it before reaching out.

Who does John Saw report to?

John Saw reports to Srini Gopalan. See the full org chart on the T-Mobile executives page.