Principal Sales Engineer — Solutions & Partner Enablement Network APIs

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. Thats how were UNSTOPPABLE for our employees!

Location: Bellevue WA (Hybrid) Onsite at least 3 days/week. This role is not remote.

The Team & Mission

T Mobiles Network as a Service (NaaS) team builds innovative network API products that empower developers partners and enterprises to build their differentiated digital solutions. Our mission is to solve enterprise challenges with scalable developer friendly solutions that tap into T Mobiles differentiated network capabilities.

The Opportunity

As a Principal Sales Engineer youll be the technical leader driving developer and partner adoption and enablement for our NaaS platforms and APIs. Youll guide customers from first conversation through productionshaping world class developer experiences accelerating integrations and ensuring successful deployments. Youll partner closely with Business Development and Product to turn network APIs into real business outcomes.

What Youll Do

• Act as the bridge between Product and Business Development ensuring customer needs align with product capabilities.
• Support presales conversations by understanding customer requirements and showing how our products deliver value.
• Educate customers on how to use our products effectively through demos technical discussions and proof-of-concepts.
• Serve as the main technical and product point of contact after the deal is signed driving smooth onboarding and integration.
• Partner with product managers to create key materials such as presales decks solution architectures and technical documentation to support customer and partner engagement.
• Gather customer feedback to influence product roadmap and improve the overall experience.

What Youll Bring

• Deep expertise in APIs SDKs and developer platforms with strong engineering fundamentals and integration skills.
• Sharp business context understanding to assess customer needs and align technical solutions with business goals.
• Strong product sense to translate complex capabilities into clear customer value.
• Hands-on experience leading presales and post sales technical engagements for enterprise customers.
• Proven ability to manage complex projects and drive execution across product engineering and GTM teams.
• Excellent communicator who can bridge technical depth with business clarity and executive impact.
• Adaptive agile and growth-oriented mindsetcomfortable operating in ambiguity shifting priorities and driving continuous learning and improvement.

Qualifications

Education

• Bachelors degree in Engineering Computer Science or a related field (required).

Experience

• 10 years in Sales Engineering Solutions Engineering or Product Management across APIs developer platforms or enterprise SaaS.
• Proven track record driving presales and post-sales success through deep technical engagement and business alignment.
• Strong experience leading customer onboarding partner integrations and solution delivery at scale.
• Deep understanding of API management SDK development and cloud infrastructure.
• Hands-on experience managing complex technical programs using Agile methods and iterative delivery.
• Exposure to AI- or automation-driven developer tools and modern API lifecycle management (preferred).
• Demonstrated ability to influence product strategy and collaborate effectively with senior business and engineering leaders.

Why This Role

Youll be the connector that turns T-Mobiles network capabilities into real customer and partner impact. This role blends product engineering and businesshelping shape how customers understand adopt and succeed with our network APIs. Youll operate like a startup inside a large enterprise: moving fast solving ambiguous problems and driving both strategy and execution. If you thrive at the intersection of technology business and customer success this is where youll make your mark.

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

Travel:
Travel Required (Yes/No):Yes 5%

Base Pay Range: $133800 - $241400

Corporate Bonus Target: 20%

The pay range above is the general base pay range for a successful candidate in the role. The successful candidates 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 employees 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 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 dont 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-Mobiles amazing benefits check out.

Never stop growing!
As part of the T-Mobile team you know the Un-carrier doesnt have a corporate ladderits more like a jungle gym of possibilities! We love helping our employees grow in their careers because its that shared drive to aim high that drives our business and our culture forward. By applying for this career opportunity youre living our values while investing in your career growthand we applaud it. Youre 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.