Demo

Principal Engineer, Software

T-Mobile
Washington, WA Full Time
POSTED ON 7/22/2026
AVAILABLE BEFORE 8/21/2026
At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That's how we're UNSTOPPABLE for our employees!

Job Overview
This role is essential for designing, implementing, and deploying scalable software solutions that meet customer requirements and support high availability environments. It involves collaborating with engineers to develop software components using technologies such as virtualization, microservices, software-defined networking, network functions virtualization, and big data platforms. The role requires applying judgment to resolve complex technical issues and making recommendations for software architecture and design. Success is measured by the effectiveness of software solutions, technical leadership contributions, and the ability to influence technology decisions. The work impacts the organization by enabling advanced software capabilities that improve operational efficiency and customer experience.

Job Responsibilities:
  • Drive engineering projects to deliver software solutions that meet technical requirements and quality standards
  • Provide technical leadership by mentoring engineers and influencing technology and policy decisions across the organization
  • Evaluate and apply technology strategies that align with business goals and system requirements
  • Develop innovative software designs and improvements that enhance existing systems and processes
  • Produce clear technical documentation and architecture descriptions for internal and external stakeholders
  • Also responsible for other duties/projects as assigned by business management as needed

Education and Work Experience:
  • Bachelor's Degree plus 7 years of related work experience OR Advanced degree with 5 years of related experience (Required)
  • Acceptable areas of study include Computer Science or Engineering (Required)
  • 7-10 years Technical engineering experience. (Required)

Knowledge, Skills and Abilities:
  • Analytical Thinking (Required)
  • Analytics (Required)
  • Collaboration (Required)
  • Communication (Required)
  • Customer Service (Required)
  • Leadership (Required)
  • Software Development (Required)
  • Technical Writing (Required)

  • At least 18 years of age
  • Legally authorized to work in the United States

Base Pay Range: $133,500 - $240,700

Corporate Bonus Target: 20%

The pay range above is the general base pay range for a successful candidate in the role. The successful candidate's actual pay will be based on various factors, such as work location, qualifications, and experience, so the actual starting pay will vary within this range.

At T-Mobile, employees in regular, non-temporary roles are eligible for an annual bonus or periodic sales incentive or bonus, based on their role. Most Corporate employees are eligible for a year-end bonus based on company and/or individual performance and which is set at a percentage of the employee's eligible earnings in the prior year. Certain positions in Customer Care are eligible for monthly bonuses based on individual and/or team performance. To find the pay range for this role based on hiring location, ;paradox=1

At T-Mobile, our benefits exemplify the spirit of One Team, Together! A big part of how we care for one another is working to ensure our benefits evolve to meet the needs of our team members. Full and part-time employees have access to the same benefits when eligible. We cover all of the bases, offering medical, dental and vision insurance, a flexible spending account, 401(k), employee stock grants, employee stock purchase plan, paid time off and up to 12 paid holidays - which total about 4 weeks for new full-time employees and about 2.5 weeks for new part-time employees annually - 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, and voluntary long-term care insurance. We don't stop there - eligible employees can also receive mobile service & home internet discounts, pet insurance, and access to commuter and transit programs! To learn about T-Mobile's amazing benefits, check out ;br>
Never stop growing!
As part of the T-Mobile team, you know the Un-carrier doesn't have a corporate ladder-it's more like a jungle gym of possibilities! We love helping our employees grow in their careers, because it's that shared drive to aim high that drives our business and our culture forward. By applying for this career opportunity, you're living our values while investing in your career growth-and we applaud it. You're unstoppable!

T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to age, race, ethnicity, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, religious affiliation, marital status, citizenship status, veteran status, the presence of any physical or mental disability, or any other status or characteristic protected by federal, state, or local law. Discrimination, retaliation or harassment based upon any of these factors is wholly inconsistent with how we do business and will not be tolerated.

Talent comes in all forms at the Un-carrier. If you are an individual with a disability and need reasonable accommodation at any point in the application or interview process, please let us know by emailing or calling 1-. Please note, this contact channel is not a means to apply for or inquire about a position and we are unable to respond to non-accommodation related requests.

Salary : $133,500 - $240,700

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Principal Engineer, Software?

Sign up to receive alerts about other jobs on the Principal Engineer, Software career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$176,149 - $220,529
Income Estimation: 
$156,679 - $196,968
Income Estimation: 
$176,149 - $220,529
Income Estimation: 
$156,679 - $196,968
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at T-Mobile

  • T-Mobile Rapid, SD
  • At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a com... more
  • 16 Days Ago

  • T-Mobile Omaha, NE
  • At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a com... more
  • 16 Days Ago

  • T-Mobile Starkville, MS
  • At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a com... more
  • 16 Days Ago

  • T-Mobile Mississippi, MS
  • At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a com... more
  • 16 Days Ago


Not the job you're looking for? Here are some other Principal Engineer, Software jobs in the Washington, WA area that may be a better fit.

  • Remitly, Inc. Washington, WA
  • Job Description: At Remitly, we believe everyone deserves the freedom to access, move, and manage their money wherever life takes them. Since 2011, we've t... more
  • 1 Day Ago

  • Baxter Healthcare Washington, WA
  • This is where your work makes a difference. At Baxter, we believe every person-regardless of who they are or where they are from-deserves a chance to live ... more
  • 3 Days Ago

AI Assistant is available now!

Feel free to start your new journey!