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Principal Software Engineer - Teams Platform

Microsoft

$139,900 - $274,800
Oct 17, 2025
Redmond, WA, US
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Microsoft is looking to solve the problem of advancing collaboration and productivity through Microsoft Teams by building resilient, highly scalable web apps and services that support artificial intelligence (AI) first scenarios for an ever-growing user and developer base.

Requirements

  • Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C-Sharp, Java, JavaScript, or Python
  • 4+ years of experience architecting and building large-scale web applications.
  • Experience with modern web technologies like React, TypeScript, GraphQL, etc.
  • Experience with web applications work for example: authentication, cookies, offline storage.
  • Experience building with LLMs, agent frameworks, or multi-agent orchestration platforms.
  • Experience developing test plans, cases, conditions, and scenarios in support of application validation and platform infrastructure.
  • Experience in driving improvements in performance, availability, and supportability.

Responsibilities

  • Tackle complex problems and develop innovative solutions.
  • Collaborate with a diverse, cross-functional team of engineers and product managers, while also engaging directly with external developers to ensure their feedback shapes the evolution of our services.
  • Contribute to one of the fastest-growing products in Microsoft's history.
  • Implement new features with high quality designs, execution, and robust deployment plans.
  • Provides technical leadership for strategic initiatives and guiding the broader team.
  • Leads by example and mentors others to produce extensible and maintainable code used across products.
  • Holds accountability as a Designated Responsible Individual (DRI), mentoring engineers across products/solutions, working on-call to monitor system/product/service for degradation, downtime, or interruptions.

Other

  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role.
  • Ability to navigate ambiguity and excel in a fast-paced, dynamic environment.
  • Passion for designing clean, powerful, and easy-to-use APIs.
  • Proven customer obsession and experience in handling on-call duties for large-scale web apps and services.
  • Proven analytical, problem-solving, debugging and technical communication skills.