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Principal Software Engineer

Microsoft

$139,900 - $304,200
Dec 5, 2025
Redmond, WA, US
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Microsoft Security is looking to empower security organizations to understand and defend against an ever-changing threat landscape by designing and building products and services that process internet scale data while maintaining high availability and reliability.

Requirements

  • 6+ years of proven experience in designing, implementing and delivering large-scale, secure and resilient software solutions.
  • 6+ years of experience as a software engineer designing, implementing, and shipping cloud services or software products.
  • Strong proficiency in programming languages such as Java, or C-Sharp, and familiarity with relevant frameworks and libraries.
  • Cloud and services experience, with Azure experience highly desirable.
  • Experience designing distributed, NRT (near real-time) or Big Data systems is highly desirable.
  • Experience building, shipping and operating consumer, scalable services and fault-tolerant distributed systems
  • Familiarity with languages including, but not limited to, C, C++, C-Sharp, Java, JavaScript, or Python

Responsibilities

  • Collaborate with and guide stakeholders to confirm customer/user requirements for products or solutions.
  • Lead architectural discussions and own the architecture for products/solutions.
  • Create and test architectural proposals and develop detailed design specifications.
  • Develop a clear testing strategy to ensure quality and prevent regression in the product.
  • Identify dependencies and incorporate them into design documentation.
  • Produce extensible, maintainable, well-tested, secure, and performant code adhering to design specifications.
  • Use various tools like debugging, testing, logging, telemetry, and AI to verify assumptions and improve product quality.

Other

  • Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience
  • Master's Degree in Computer Science or related technical field AND 8+ years technical engineering experience
  • Ability to meet Microsoft, customer and/or government security screening requirements
  • Deep customer empathy and ability to identify customer needs
  • Demonstrated ability to lead and mentor junior engineers, driving technical excellence and fostering a collaborative team environment.