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Principal Sales Engineer — Solutions & Partner Enablement - Network APIs

United States, Bellevue 133800.00 - 241400.00 USD / Year · Job Posted January 07, 2026
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Job Description

T Mobile’s 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 Mobile’s differentiated network capabilities. As a Principal Sales Engineer, you’ll be the technical leader driving developer and partner adoption and enablement for our NaaS platforms and APIs. You’ll guide customers from first conversation through production—shaping world class developer experiences, accelerating integrations, and ensuring successful deployments. You’ll partner closely with Business Development and Product to turn network APIs into real business outcomes.

Job Responsibility

  • 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

Requirements

  • Bachelor’s degree in Engineering, Computer Science, or a related field (required)
  • 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
  • At least 18 years of age
  • Legally authorized to work in the United States

Nice to have

Exposure to AI- or automation-driven developer tools and modern API lifecycle management

What we offer

  • Competitive base salary and compensation package
  • Annual stock grant
  • Employee stock purchase plan
  • 401(k)
  • Access to free, year-round money coaches
  • Medical, dental and vision insurance
  • Flexible spending account
  • Paid time off and 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

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