Principal Software Engineer | Microsoft Careers

What you'll do

• Define architecture for Conditional Access at identity-platform scale.
• Own technical strategy for CA evaluation engine processing millions of policies per second.
• Design next-generation policy model for portable, data-driven evaluations.
• Drive convergence of token-time and continuous access evaluation architectures.
• Lead technical vision for agent identities in Conditional Access system.

What we're looking for

• Deep expertise in distributed systems, high-performance runtime engines, or policy/rules engines at extreme scale.
• Strong background in identity, authentication, authorization, and security infrastructure, including OAuth2/OIDC and Zero Trust principles.
• Fluency in C# and large-scale .NET service development; experience with ESTS or similar platforms preferred.
• Proven ability to define and drive multi-year technical strategies across teams and organizations.
• Experience making pragmatic tradeoffs between architectural purity and shipping velocity.
• Track record of designing systems that evolve incrementally under production load without downtime.