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Security 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.

Responsibilities

1. Own 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.

2. 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.

3. Optimize & refactor: Debug, profile, and refactor C# code for performance, allocation efficiency, and async correctness; use metrics to drive stability and quality.

4. Diagnostics & telemetry: Apply structured logging, tracing, and telemetry to validate assumptions proactively and accelerate root-cause analysis.

5. Test strategy & automation: Define success criteria; author and evolve unit/integration/contract tests; maintain automation-first practices in CI/CD pipelines.

6. Architecture & design: Write design docs, validate hypotheses, and contribute to architecture proposals; ensure solutions meet security, privacy, and compliance expectations.

7. Dependency management: Identify upstream/downstream dependencies across Azure services; optimize dependency chains and coordinate with partner teams.

8. Reliability & on-call (DRI): Serve as DRI for SDK components; monitor health, respond within SLAs, reduce incident volume, and author postmortems.

9. Telemetry-driven iteration: Instrument SDK for usage, reliability, and performance; build dashboards and feedback loops to inform API design and roadmap.

10. 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

Qualifications

Required Qualifications:

+ Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python

+ OR equivalent experienc

+ 4+ year(s) experience in commercial software development, including building, shipping, and operating reliable, distributed solutions and engaging in site-reliability engineering practices.

+ 1+ years of hands-on experience with Cloud and large distributed systems.

Other Requirements:

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.

Preferred Qualifications:

+ Master's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python

+ OR Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python

+ OR equivalent experience.

+ Deep experience with infrastructure as code on Azure—using Terraform, Pulumi, CAPZ (Cluster API Provider for Azure), and Azure Service Operator to define, provision, and manage cloud-native infrastructure declaratively.

+ Expert-level C#/.NET: Deep knowledge of language internals and runtime (generics, async/await, spans & memory, reflection, LINQ, analyzers, source generators, performance tuning).

+ Azure Resource Manager (ARM): Strong understanding of ARM templates, resource modeling, and API structure for Azure services.

+ SDK & API design: Proven experience building developer-facing SDKs/libraries (versioning, compatibility, error modeling, resilience, discoverability, DX-first design).

+ Testing excellence: Expertise with xUnit/NUnit, mocking frameworks, integration/contract testing, and automation-first strategies.

+ Diagnostics & performance: Skilled with .NET debugging and performance tools (Visual Studio, dotnet-trace, PerfView, ETW/EventSource).

+ CI/CD & release engineering: Experience with Azure DevOps/GitHub Actions, NuGet publishing, semantic versioning, and safe rollout strategies.

+ Telemetry & observability: Hands-on with logging, metrics, and traces (OpenTelemetry, Application Insights/Azure Monitor)

+ Security & compliance: Familiarity with Microsoft security and compliance standards; secure coding practices.

+ Developer productivity passion: Demonstrated impact improving developer workflows through tooling, analyzers, templates, and documentation.

Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $158,400 - $258,000 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:

https://careers.microsoft.com/us/en/us-corporate-pay

Microsoft will accept applications for this role until November 7th, 2025.

\#MicrosoftSecurity #msec-idp

Microsoft is an equal opportunity employer. Consistent with applicable law, all qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations (https://careers.microsoft.com/v2/global/en/accessibility.html) .