New 
Senior Software Engineer
 Microsoft | |
 United States, Washington, Redmond | |
 Oct 28, 2025 | |
|
OverviewSecurity represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft Security aspires to make the world a safer place for all. We want to reshape security and empower every user, customer, and developer with a security cloud that protects them with end to end, simplified solutions. The Microsoft Security organization accelerates Microsoft's mission and bold ambitions to ensure that our company and industry is securing digital technology platforms, devices, and clouds in our customers' heterogeneous environments, as well as ensuring the security of our own internal estate. Our culture is centered on embracing a growth mindset, a theme of inspiring excellence, and encouraging teams and leaders to bring their best each day. In doing so, we create life-changing innovations that impact billions of lives around the world. The Infrastructure and Developer Platform (IDP) team within Microsoft Security plays a pivotal role in supporting the Defender suite by providing a foundational platform that simplifies service deployment, enhances security, and reduces operational costs. Positioned at the intersection of C#/.NET SDK development and Kubernetes, this role is instrumental in enabling AI-driven development workflows across the Microsoft Threat Protection (MTP) organization. By streamlining infrastructure and developer tools, the IDP team empowers engineers to build and scale services more efficiently and reliably.The Infrastructure and Developer Platform (IDP) team is a cornerstone of Microsoft's security strategy, delivering the essential infrastructure that powers the Defender product suite. By offering robust tools and frameworks, IDP enables engineering teams to innovate rapidly while ensuring secure, reliable, and cost-effective service deployment. Leveraging cutting-edge technologies and best practices, the platform supports seamless operations and global protection for millions of users, reinforcing Microsoft's leadership in cybersecurity. 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.
ResponsibilitiesOwn the C# SDK: Design, build, and maintain extensible, maintainable .NET SDK abstractions for defining Azure resources and services; deliver intuitive, discoverable APIs that maximize developer productivity.Code quality & reviews: Lead rigorous code reviews aligned to Microsoft and team standards; ensure diagnosability, reliability, maintainability, and adherence to proven patterns and best practices.Optimize & refactor: Debug, profile, and refactor C# code for performance, allocation efficiency, and async correctness; use metrics to drive stability and quality.Diagnostics & telemetry: Apply structured logging, tracing, and telemetry to validate assumptions proactively and accelerate root-cause analysis.Test strategy & automation: Define success criteria; author and evolve unit/integration/contract tests; maintain automation-first practices in CI/CD pipelines.Architecture & design: Write design docs, validate hypotheses, and contribute to architecture proposals; ensure solutions meet security, privacy, and compliance expectations.Dependency management: Identify upstream/downstream dependencies across Azure services; optimize dependency chains and coordinate with partner teams.Reliability & on-call (DRI): Serve as DRI for SDK components; monitor health, respond within SLAs, reduce incident volume, and author postmortems.Telemetry-driven iteration: Instrument SDK for usage, reliability, and performance; build dashboards and feedback loops to inform API design and roadmap.Developer productivity advocacy: Build and share tools (e.g., Roslyn analyzers, source generators, templates), samples, and docs to accelerate adoption.Embody our culture and values | |