Office profile
T-Mobile US Headquarters & offices · Bellevue, Washington
T-Mobile US · Bellevue, Washington
A vintage Airstream serving frozen yogurt, a campus pub and a grand staircase that doubles as an amphitheater — inside T-Mobile's renovated Bellevue headquarters.
The campus on the hill above I-90, the benefits and 30 years of office history — then the pay. Every number from T-Mobile's filings, its newsroom, its benefits site and the designers' own project pages.
- 40,000 sq ftamenity centerpiece at the HQ
- 6,200+people on the Bellevue campus (2018)
- 12 weeksfully paid leave for birth parents
- 75,000employees, end of 2025
Sources: Form 10-K 2025 · Proxy statement 2026 · T-Mobile Newsroom (2018, 2025) · T-Mobile benefits site · Gensler and MGAC project pages
Companies / United States / Telecommunications / T-Mobile US
THE HEADQUARTERS · BELLEVUE · RENOVATED 2018–2022
A $160 million makeover for a campus that had outgrown itself
In 2018 T-Mobile renewed its Bellevue lease through 2030 and began a $160 million renovation with its landlord Ivanhoe Cambridge. Gensler joined the separate buildings with colorful skybridges, built two amenity floors with six dining kiosks, a Starbucks, a pub and a vintage Airstream serving frozen yogurt, and moved most people to unassigned desks — high-top tables, lounges, huddle rooms and quiet rooms.
- 40,000 sq ft (≈ 3,716 m²) amenity centerpiece
- 1,000 sq ft grand staircase = amphitheater
- Two new skybridges
- LEED Gold
- Design: Gensler
- Completed 2022
Skybridges, courtyards and terraces
Gensler joined the campus's separate buildings with colorful skybridges; the renovation, completed in 2022, also added outdoor courtyards and bocce courts.
The amenity floors
Two amenity floors hold six dining kiosks, a Starbucks, a pub and a vintage Airstream serving frozen yogurt.
Facts: T-Mobile Newsroom, “Sneak Peek: 5 Cool Things Coming to All-New T-Mobile HQ in Bellevue” (Nov 19, 2018) and “How T-Mobile Is Building a More Sustainable Future” (2025) · Gensler project page “T-Mobile Headquarters Campus” · MGAC project page and “Behind the Build: T-Mobile Headquarters” (2025).
The Bellevue campus
| Building | Address |
|---|---|
| Headquarters | 12920 SE 38th Street, Bellevue, WA 98006 |
| Bellevue office (job location on the careers site) | 3625 132nd Ave SE, Bellevue, WA |
Source: Form 10-K 2025 cover · careers.t-mobile.com (job REQ373586) · See them on the map ↓
Source: Form 10-K 2020, Item 2 (office area) · T-Mobile Newsroom 2018 and 2025 · Gensler and MGAC project pages. Gensler gives “over 1,000,000 sq ft”; MGAC gives 1,100,000 and 1,400,000 sq ft.
Benefits (United States)
Birth parents: up to 8 weeks of maternity leave plus 4 weeks of bonding time, at 100% pay. Non-birth parents: 4 weeks; grandparents: 2 weeks.
Per child, plus fertility treatment through Progyny and up to $2,000 per birth for doula care (2026).
No-cost Lyra sessions per topic, per year, for each household member.
Full tuition at partner universities; elsewhere $5,250 a year for full-time and $2,500 for part-time employees.
$1 for $1 on the first 3% of pay and 50 cents on the next 2%, after one year; vested immediately.
Up to 15% of eligible pay, at the lower of the first or last day's price of each six-month period.
Back-up child and elder care days a year through Bright Horizons, plus a childcare subsidy of $175–$250 a month for pay up to $99,000.
The T-Mobile Foundation matches donations dollar for dollar and gives $15 per volunteer hour, up to $2,000 combined a year.
Source: T-Mobile benefits site (t-mobilebenefits.com: parental leave, family building, Lyra, education, 401(k), back-up care, childcare subsidy, employee giving) · Form 10-K 2025 (ESPP terms)
Why people stay: what T-Mobile itself says
Annual stock grants to all full-time and part-time employees, awarded each year on February 25.
Full tuition at several partner universities, for full-time and part-time employees alike.
At least $20 an hour for all full-time and part-time employees.
Six ERGs and four sub-affinity groups, open to all, with 38 chapters nationwide.
Free life coaches, financial coaches and tools for healthy living.
“T-Mobile is a hybrid work environment requiring work in the office three (3) days per week,” as a 2026 Bellevue-area posting puts it.
Source: Form 10-K 2025, Human Capital · T-Mobile benefits site (stock grant, tuition) · T-Mobile job posting REQ373586 (hybrid policy)
Who works here
full- and part-time employees, end of 2025
employees on the Bellevue HQ campus (2018)
headquarters: Bellevue, WA and Overland Park, KS
ERG chapters nationwide
Source: Form 10-K 2025, Human Capital · T-Mobile Newsroom, Nov 19, 2018
Pay at T-Mobile US
The median was identified on December 31, 2025. The CEO's annualized pay was 499 times this amount.
Source: Proxy statement, April 27, 2026
Source: T-Mobile job posting REQ373586 (careers.t-mobile.com, 2026). Base pay only; total target cash $108,100–$195,040.
U.S. companies don't have to report pay by age, and T-Mobile doesn't. The posted range above is the closest official number.
Office history: one Bellevue hillside since 2001
- 1994 Born inside Western Wireless
T-Mobile USA was formed in 1994 as VoiceStream Wireless PCS, a subsidiary of Western Wireless Corporation.
Source: Form 10-K 2013, Item 1
No free-to-use photo found yet.Have one? We’d love to add it. - 1999 3650 131st Avenue SE, Bellevue
VoiceStream was spun off from Western Wireless in May 1999. Its SEC filings that year give its address as Western Wireless's offices at 3650 131st Avenue SE, Suite 400, Bellevue.
Source: Form 10-K 2013 · SEC EDGAR filings of VoiceStream Wireless Corp (1999)
No free-to-use photo found yet.Have one? We’d love to add it. - 2001 12920 SE 38th Street — today's address
By April 2001 VoiceStream officers filed from 12920 SE 38th Street, Bellevue. Deutsche Telekom bought VoiceStream on May 31, 2001, and renamed it T-Mobile USA.
Source: SEC Form 4, VoiceStream Wireless Corporation (April 2001) · Form 10-K 2013
T-Mobile offices in Bellevue, 2008 · Joe Mabel / CC BY-SA 3.0 · Wikimedia Commons - 2013 T-Mobile US, 1 million sq ft in Bellevue
The combination with MetroPCS closed on April 30, 2013, creating T-Mobile US, Inc. The company leased about 1.0 million sq ft (≈ 92,903 m²) for its Bellevue headquarters, with about 40,000 employees nationwide.
Source: Form 10-K 2013
Newport Terrace, Factoria, 2013 · Wonderlane / CC BY 2.0 · Wikimedia Commons - 2018 Bursting at the seams: a $160M renovation
The HQ campus had grown by more than 56% in five years to over 6,200 employees. T-Mobile renewed its lease through 2030 and broke ground on a $160 million renovation with Gensler, MGAC and Andersen Construction. Office space was about 1,000,000 sq ft, plus 170,000 sq ft of new leases in January 2019.
Source: T-Mobile Newsroom, Nov 19, 2018 · Form 10-K 2018 · MGAC
No free-to-use photo found yet.Have one? We’d love to add it. - 2020 Sprint merger and a second headquarters
The merger with Sprint closed on April 1, 2020. T-Mobile now has headquarters in Bellevue and Overland Park, Kansas; Bellevue's corporate offices totaled about 1.3 million sq ft (≈ 120,774 m²).
Source: Form 10-K 2020
The Sprint campus in Overland Park, 2009 · Americasroof / CC BY-SA 3.0 · Wikimedia Commons - 2022 The renovated campus opens
The renovation was completed in 2022: skybridges, a 40,000 sq ft amenity centerpiece, food halls with a “Lunch on Us” program, outdoor courtyards and bocce courts.
Source: T-Mobile Newsroom, 2025 · MGAC · Gensler
No free-to-use photo found yet.Have one? We’d love to add it.
| Annual report | HQ space (sq ft) | m² | As described |
|---|---|---|---|
| 10-K 2013 | ≈ 1,000,000 | ≈ 92,903 | Leased, corporate headquarters in Bellevue |
| 10-K 2016 | ≈ 950,000 | ≈ 88,258 | Leased, corporate headquarters in Bellevue |
| 10-K 2017 | ≈ 900,000 | ≈ 83,613 | Corporate headquarters in Bellevue |
| 10-K 2018 | ≈ 1,000,000 | ≈ 92,903 | Plus 170,000 sq ft leased in January 2019 |
| 10-K 2019 | ≈ 1,200,000 | ≈ 111,484 | Corporate headquarters in Bellevue |
| 10-K 2020 | ≈ 1,300,000 | ≈ 120,774 | Corporate offices in Bellevue (after the Sprint merger) |
Map: how the headquarters moved
T-Mobile has never left Bellevue: from VoiceStream's 1999 address at Western Wireless's offices on 131st Avenue SE to the headquarters on SE 38th Street it has used since 2001, on the hill above I-90.
- 1 · 19993650 131st Avenue SE, Bellevue — VoiceStream's address at Western Wireless's offices after the spin-off
- 2 · 2001–today12920 SE 38th Street, Bellevue — Headquarters since at least April 2001; renovated 2018–2022
Addresses: SEC EDGAR filings of VoiceStream (1999, 2001) · Form 10-K 2025 cover
What T-Mobile US does
T-Mobile calls itself “America's supercharged Un-carrier”: a nationwide wireless network for phones, plus 5G home internet and fiber, sold through T-Mobile and Metro by T-Mobile stores. It ended 2025 with 142.4 million customers.
Revenue is reported as service revenues (postpaid, prepaid, wholesale and other) and equipment revenues.
Where the money came from · Revenue by type · 2025
Source: Form 10-K 2025, Item 1 and Item 7 (revenues)
Source: Form 10-K 2025 · per-employee figure calculated by eciffo
Growth: revenue vs. people
$37.5B → $88.3B
50,000 → 75,000
Fiscal years end December 31. Revenue: SEC XBRL financial data from T-Mobile's 10-K filings. Employees: Form 10-K (approximate, full- and part-time). The 2020 jump reflects the Sprint merger on April 1, 2020. Multiples calculated by eciffo.
Chief executives
Joined as Chief Operating Officer in March 2025; President and CEO since November 1, 2025.
President and CEO from April 2020, after serving as COO from 2015; now Vice Chairman.
Formed in 1994 as VoiceStream Wireless PCS, a subsidiary of Western Wireless Corporation; part of Deutsche Telekom since 2001.
Source: Proxy statement 2026 · Form 10-K 2013
T-Mobile US: questions people ask
Where is T-Mobile's headquarters?
At 12920 SE 38th Street in Bellevue, Washington. Since the 2020 Sprint merger, T-Mobile also has a headquarters in Overland Park, Kansas.
Source: Form 10-K 2025
Who designed T-Mobile's headquarters?
Gensler designed the 2018–2022 renovation of the Bellevue campus, with MGAC as program manager and Andersen Construction as builder.
Source: Gensler · MGAC project pages
How big is T-Mobile's Bellevue headquarters?
T-Mobile's last filing to give a figure reported about 1.3 million sq ft (≈ 120,774 m²) of corporate offices in Bellevue (2020). The designers describe the renovated campus as over 1,000,000 sq ft across multiple buildings.
Source: Form 10-K 2020 · Gensler · MGAC
What is inside T-Mobile's headquarters?
Two amenity floors with six dining kiosks, a Starbucks, a pub, a happy hour bar and a vintage Airstream serving frozen yogurt; a 1,000 sq ft grand staircase that doubles as amphitheater seating; skybridges with work pods; and outdoor decks and bocce courts.
Source: Gensler · MGAC · T-Mobile Newsroom 2025
Does T-Mobile allow remote or hybrid work?
A 2026 T-Mobile job posting for the Seattle area describes T-Mobile as a hybrid work environment requiring work in the office three days per week.
Source: T-Mobile job posting REQ373586 (2026)
What benefits does T-Mobile offer?
In the U.S.: up to 12 weeks of fully paid leave for birth parents, up to $30,000 per child for adoption and surrogacy, 10 no-cost therapy sessions per topic through Lyra, full tuition at partner schools, a 401(k) match, a 15% stock purchase discount and annual stock grants for all employees.
Source: T-Mobile benefits site · Form 10-K 2025
How many people work at T-Mobile?
About 75,000 full-time and part-time employees at the end of 2025, almost all in the United States and Puerto Rico. More than 6,200 worked on the Bellevue campus in 2018.
Source: Form 10-K 2025 · T-Mobile Newsroom 2018
How much do T-Mobile employees make?
The median employee's total compensation was $76,141 in 2025. Every full-time and part-time employee earns at least $20 an hour.
Source: Proxy statement 2026 · Form 10-K 2025
Who is T-Mobile's CEO?
Srini Gopalan, President and CEO since November 1, 2025. He succeeded Mike Sievert, CEO from April 2020, who became Vice Chairman.
Source: Proxy statement 2026
You have seen the office, the benefits and the pay
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