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Microsoft Principal Software Engineer 
United States, California, Mountain View 
211547366

09.10.2025

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As the Principal Software Engineer on our team, you would have the opportunity to work on:

  • ONNX: an open standard format for representing AI models, enabling AI developers to work on AI models with a variety of frameworks, tools, runtimes, and compilers.
  • ONNX Runtime: ONNX based cross-platform, high performance ML inferencing and training accelerator.
  • Foundry Local: an on-device AI inference solution offering performance, privacy, customization, and cost advantages. It integrates seamlessly into your existing workflows and applications through an intuitive CLI, SDK, and REST API.

Required Qualifications:

  • Bachelor's degree in computer science, or related technical discipline AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Python
    • OR equivalent experience.
  • 6+ years of experience in AI frameworks, large scale distributed computation, system programming, compiler or machine learning.
  • 6+ years of experience successfully collaborating with cross functional teams, owning deliverables and driving results to meet business objectives.

Preferred Qualifications:

  • Experience building Android applications from scratch.
  • Experience working on systems performance optimization.
  • Working with Open-Source code.
  • The ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings: Microsoft Cloud Background Check:
    • This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Software Engineering IC5 - The typical base pay range for this role across the U.S. is USD $139,900 - $274,800 per year.

Software Engineering IC6 - The typical base pay range for this role across the U.S. is USD $163,000 - $296,400 per year.
Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:


Responsibilities

As a Principal Software Engineer on the team the common tasks of the job would include, but not be limited to

  • Partnering with appropriate stakeholders to determine user requirements for one or more complex scenarios.
  • Providing technical leadership for the identification of dependencies and the development of design documents for a product, application, service, or platform.
  • Leading by example and mentoring others to produce extensible and maintainable code used across the company.
  • Leveraging deep subject-matter expertise of cross-product features with appropriate stakeholders (e.g., project managers) to lead multiple product's project plans, release plans, and work items.
  • Holding 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 seeking 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.
  • Embodying our

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