Principal Software Engineer - Entra ID Security

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 Identity Security Breach Response Squad (IDSEC BRS) is where engineers and security researchers come to work on the most challenging identity security problems at Microsoft. The team operates at the front lines of incident response, partnering closely with investigators and engineers to understand how real attacks unfold and to turn those insights into scalable detection, investigation, and response capabilities. BRS is deeply hands on: team members work directly with large scale identity telemetry, trace complex attack paths, and help shape the tools and systems that responders rely on during high impact security events. If you’re motivated by solving ambiguous problems, learning from real adversary behavior, and seeing your work directly improve how a global platform defends itself, this team offers the opportunity to make a tangible difference at cloud scale.

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.

#MSFTSecurity, #Cybersecurity #EntraID #IdentitySecurity #Identity&NetworkAccess 

• Build and operate services that help security teams investigate and respond to sophisticated identity-related threats at global scale.
• Create agentic systems that make security investigations faster, more reliable, and easier to execute under pressure.
• Design systems that connect signals across large datasets to surface high-confidence findings and actionable remediation steps.
• Apply AI thoughtfully to assist human decision-making in investigations (with clear safety boundaries, evaluation, and human-in-the-loop controls).
• Lead architecture and technical direction across multiple workstreams; partner across engineering and security teams to deliver end-to-end outcomes.
• Drive operational excellence for mission-critical services (reliability, observability, incident response, and safe rollouts).
• Mentor engineers and model strong engineering fundamentals, security best practices, and inclusive collaboration.

Required Qualifications:

• Bachelor'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 equivalent experience.

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 background and Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Preferred Qualifications:

• 5+ years of professional software engineering experience building and operating production services.
• Background in distributed systems (reliability, performance, scalability, and operational excellence).
• Experience designing secure systems (threat modeling, secure coding practices, and principled access control).
• Demonstrated technical leadership: driving architecture decisions, aligning stakeholders, and delivering complex projects end-to-end.
• Experience applying AI to improve workflows in high-consequence environments (with evaluation and safety boundaries).
• Experience building security, investigation, eviction, detection, or forensics-adjacent tooling.
• Experience building data-intensive platforms (pipelines, indexing/search, large-scale analytics, or workflo