Senior Security Engineer

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 (IDSEC) Breach Preventions team is responsible for preventing repeat security incidents across Microsoft’s Identity platform by building scalable, engineering driven security controls that eliminate entire classes of vulnerabilities before they can be exploited. Our team operates at the intersection of software engineering and security research to design and deploy platform level countermeasures across Microsoft’s Identity and Network Access (IDNA) services. We focus on proactively identifying authentication and authorization attack paths, translating breach learnings into reusable preventative mechanisms, and automating security enforcement across hundreds of production services. Our goal is to move beyond reactive vulnerability mitigation by harmonizing engineering and security systems to automate reusable protections across the identity technology stack. We are looking for a Senior Security Engineer to join our team.

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.

In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day. 

• Translating breach learnings and threat actor behaviors into deterministic engineering controls that prevent recurrence across multiple services.
• Designing platform level enforcement mechanisms that eliminate classes of vulnerabilities without requiring service by service remediation.
• Developing reusable prevention frameworks and paved path security standards.
• Partnering with engineering teams to integrate preventative controls into production environments while maintaining service reliability.
• Contributing to scalable automation and analysis across signals from vulnerability research, threat intelligence, and security risk posture monitoring.
• Enabling rapid deployment of security countermeasures across Microsoft’s identity fleet to proactively strengthen defenses against emerging threats.
• Embody our Culture and Values

Required Qualifications:

• Doctorate in Statistics, Mathematics, Computer Science, or related field OR Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 3+ years experience in software development lifecycle, large-scale computing, threat modeling, cyber security, anomaly detection, Security Operations Center (SOC) detection, threat analytics, security incident and event management (SIEM), information technology (IT), or operations incident response OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 4+ years experience in software development lifecycle, large-scale computing, threat modeling, cyber security, anomaly detection, Security Operations Center (SOC) detection, threat analytics, security incident and event management (SIEM), information technology (IT), or operations incident response OR equivalent experience. 
• 3+ years of deep understanding of identity and access technologies, such as authentication and authorization protocols (OAuth, OIDC, SAML), tokens, certificates/PKI, and MFA

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