New 
Senior Software Engineer
 Microsoft | |
 United States, Washington, Redmond | |
 Oct 28, 2025 | |
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OverviewCore AI is at the forefront of Microsoft's mission to redefine how software is built and experienced. Weare responsible forbuilding the foundational platforms, services, programming models, and developer experiences that power the next generation of applications using Generative AI. Our work enables developers and enterprises to harness the full potential of AI to create intelligent, adaptive, and transformative software. The 1ES (One Engineering System) teamis responsible forenabling the world's best engineering teams with world-class tools and systems that help them ship products their customers love. Developers rely on many components to build software, including open-source packages built by others, enabling code reuse, faster development cycles and increased quality. Moreover, Microsoft is a big contributor of open-source software, including .NET and Visual Studio Code. Ensuring the security of those components and great developer experience is paramount to Microsoft's core mission. The Open-Source Security and Tools team is seeking a senior software engineer who is passionate about open-source, developer productivity and security and will contribute to the ongoing growth and support of the engineering system powering Microsoft. The responsibilities will include:developing scalable distributed services scanning package managers like npm, NuGet and PyPi,collaborating with security teams, integrating new policies and scanners in our system,building a variety of tools that help Microsoft engineers consume and build open-source software that's secure,supporting customers and the production services.An understanding of how package managers work, how packages are built and installed in various languages and best practices for OSS development would be advantageous. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
ResponsibilitiesCollaborates with appropriate stakeholders to determine user requirements for a scenario. Drives identification of dependencies and the development of design documents for a product, application, service, or platform. Creates, implements, optimizes, debugs, refactors, and reuses code to establish and improve performance and maintainability, effectiveness, and return on investment (ROI). Leverages subject-matter expertise of product features and partners with appropriate stakeholders (e.g., project managers) to drive a workgroup's project plans, release plans, and work items. Acts as a Designated Responsible Individual (DRI) and guides other engineers by developing and following the playbook, working on call to monitor system/product/service for degradation, downtime, or interruptions, alerting stakeholders about status and initiates actions to restore system/product/service for simple and complex problems when appropriate. 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. | |