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Principal Software Engineer - Teams Platform

Microsoft

$139,900 - $304,200
Oct 17, 2025
Redmond, WA, US
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Microsoft Teams is revolutionizing workplace collaboration, and the company is looking for engineers to build resilient, highly scalable web apps and services that support artificial intelligence (AI) first scenarios for an ever-growing user and developer base on the Microsoft Teams Developer Platform.

Requirements

  • 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.
  • Passion for designing clean, powerful, and easy-to-use APIs.

Responsibilities

  • Tackle complex problems and develop innovative solutions.
  • Implements 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.
  • Proactively seeks new knowledge and adapts to new trends, technical solutions, and patterns that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale and shares knowledge with other engineers.
  • Collaborates with multiple stakeholders across the company to determine user requirements, align dependencies, and build compelling user scenarios.

Other

  • 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.
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role.
  • 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.
  • Ability to navigate ambiguity and excel in a fast-paced, dynamic environment.