T-Mobile · 2 weeks ago
Principal Engineer, Software Full Stack
Bellevue, WA
Full-time
Hybrid
Senior Level, Lead/Staff
$129K/yr - $233K/yr
7+ years expT-Mobile is a company that prioritizes investing in its employees through competitive compensation and a culture of innovation. The Principal Software Engineer will work collaboratively with other engineers to design and implement software solutions while leading projects and mentoring team members.
InternetMobileTelecommunicationsWireless
Responsibilities
Drives engineering projects by developing software solutions; conducting tests and inspections; preparing reports and calculations. Expected to supervise base and associate level engineers as needed
Understands system protocols, how systems operate and data flows. Aware of current technology benefits. Expected to independently develop a full software stack. Understands the building blocks, interactions, dependencies, and tools required to complete software and automation work. Independent study of current technology is expected. Interact with system engineers to define system requirement and/or necessary requirements for automation
Contributes to designs to implement new ideas which utilize new frameworks to improve an existing or new system/process/service
Review existing designs and processes to highlight more efficient ways to complete existing workload more effectively through industry perspectives
Understands the creation of company IPR
Collaborates with technical teams and utilizes system expertise to deliver technical solutions
Continuously learns and teaches others existing and new technologies
Contributes to the development of others through mentoring or in house workshops and learning sessions
Contributes to new and existing technology options that support business goals
Understands current technology that supports business goals. Understands system protocols, how systems operate and data flows. Aware of current technology benefits. Expected to independently develop a full software stack. Understands the building blocks, interactions, dependencies, and tools required to complete software and automation work. Independent study of current technology is expected. Interact with system engineers to define system requirement and/or necessary requirements for automation
Writes basic documentation on how technology works. Creates clear documentation for new code and systems used
Documenting systems designs, presentations, and business requirements for consumption and consideration at the manager level
Qualification
Required
Bachelor's Degree Computer Science or Engineering
7-10 years Technical engineering experience
Communication
Customer Service
Analytics
Technical Writing
At least 18 years of age
Legally authorized to work in the United States
Preferred
Experience with Cloud services(Azure preferred) and platform knowledge
Experience with developing and deploying applications in Kubernetes
Proficiency in implementing and managing micro-services architecture for scalable solutions
Extensive experience in full-stack development, including both front-end and back-end technologies
Strong understanding of software quality and scalability principles
Ability to innovate and optimize solutions in a fast-paced environment
Familiarity with the latest advancements in AI and ML technologies
Benefits
Medical, dental and vision insurance
Flexible spending account
401(k)
Employee stock grants
Employee stock purchase plan
Paid time off
Up to 12 paid holidays
Paid parental and family leave
Family building benefits
Back-up care
Enhanced family support
Childcare subsidy
Tuition assistance
College coaching
Short- and long-term disability
Voluntary AD&D coverage
Voluntary accident coverage
Voluntary life insurance
Voluntary disability insurance
Voluntary long-term care insurance
Mobile service & home internet discounts
Pet insurance
Access to commuter and transit programs
Company
T-Mobile
T-Mobile is a telecommunications company that provides wireless communication services, including mobile phone and internet services. It is a sub-organization of Deutsche Telekom.
10001+ employees
H1B Sponsorship
T-Mobile has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (533)
2024 (457)
2023 (433)
2022 (674)
2021 (522)
2020 (320)
Funding
Current Stage
Public CompanyTotal Funding
$25.37B2026-01-06Post Ipo Debt· $10B
2025-10-06Post Ipo Debt· $2.8B
2024-09-23Post Ipo Debt· $2.5B
Leadership Team
John Saw
President of Technology, Chief Technology Officer
Peter Osvaldik
EVP & CFO
Recent News
Android Authority
2026-01-08
Business Wire
2026-01-08
2026-01-08
Company data provided by crunchbase