New 
Principal Security Engineer
 Microsoft | |
 United States, Washington, Redmond | |
 Nov 02, 2025 | |
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OverviewThe Cloud & AI organization accelerates Microsoft's mission is 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. Microsoft is one of the largest enterprise service companies in the world. Are you interested in identifying and exploiting security vulnerabilities that impact hundreds of millions of users across the world? Join the Microsoft Red Team (MRT) organization, where you will emulate real-world advanced persistent threats against Microsoft. Our mission is to ensure Microsoft is prepared to face and respond to even the most determined adversaries by exploring innovative ways to identify and prevent security flaws. MRT is seeking talented individuals focused on identifying, exploiting, and emulating real-world threats, ensuring the security and resilience of Microsoft. As a Principal Security Engineer you will lead operations and collaborate with other experienced red teamers in identifying and exploiting vulnerabilities across all layers of services, including application, cloud, network, hardware, and operational security domains. You will work closely with developers and security personnel from multiple teams across Microsoft. Additionally you will be responsible for fostering the team's growth both technically and culturally, as we build and retain the next generation of top talent at Microsoft. By adopting the tactics, techniques, and procedures of potential attackers, you will provide critical insights that empower our security teams to strengthen defenses and protect against the evolving landscape of digital threats.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.
Responsibilities- Discover and exploit vulnerabilities end-to-end in order to assess the security of services- Execute and lead Red Team operations using real world adversarial tactics and techniques to validate a production service's ability to detect, investigate, and respond- Research and experiment with new and emerging adversarial techniques- Lead security change across the company through articulating risks and partnering for correct solutions- Prototype tools and techniques to scale and accelerate offensive emulation and vulnerability discovery- Collaborate with Blue Teams to improve readiness and produce solutions for defenders and customers- Analyze simulated adversary tactics and communications, enriching our defensive tactics and threat intelligence- Enhance Security Incident Response by providing expert insight and help when assisting Microsoft's defensive actions against adversaries.Embody our culture and values | |