Hiring: Principal Security Engineer Company: Microsoft Location: United States Job Posted Time: 2026-09-17 12:45:40 Target Skills & Keywords : .NET, AWS, Azure, C#, C++, GCP, LLM, Linux, Penetration Testing, PowerShell, Python, Rust About the job Experience: •6+ years of experience planning and leading red team or adversary emulation operations against enterprise or cloud environments. •8+ years of experience identifying and exploiting security vulnerabilities across cloud (Azure, AWS, GCP), identity (Entra ID / Active Directory), Windows and Linux endpoints, network, and hardware. •6+ years of experience with coding or scripting in languages such as Python, C#, C++, Go, PowerShell, .NET, Rust, or other comparable programming languages, including building and maintaining offensive tooling. Required Skills: •Develop custom tooling, implants, and tradecraft to evade modern defenses and emulate the capabilities of advanced adversaries. •Lead agentic red team operations: design and direct AI agents that autonomously perform reconnaissance, vulnerability discovery, exploitation, and post-exploitation; define guardrails, oversight, and human-in-the-loop checkpoints; and drive the shift from human-led execution to continuous, software-driven, agentic analysis. •Discover and exploit vulnerabilities end-to-end across application, cloud, identity, network, hardware, and operational security layers, chaining findings into realistic attack paths that demonstrate business impact. •Serve as the forward-deployed technical lead with customers: brief CISOs and security leaders, translate findings into actionable narratives, and deliver lightweight defensive engineering guidance alongside offensive results. •Prototype and productionize tools, agents, and techniques that scale offensive emulation and vulnerability discovery, and feed requirements back to our offensive AI platform engineering team based on what works in real environments. •Set operational standards and playbooks for CyberShield engagements; mentor senior operators and virtual-team specialists drawn from across MRT. •Advocate for security change across Microsoft and its customers by building partnerships and clearly communicating the impact of risk. •Embody our Culture and Values. Qualifications: •Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 4+ years experience in security or related field OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 6+ years experience in security or related field OR equivalent experience. •Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter. •Customer environment screening: Operators working in customer environments may be required to complete additional customer- or government-directed vetting. •Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 8+ years experience in security or related field OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 12+ years experience in security or related field OR equivalent experience. •Demonstrated hands-on experience building, directing, or operating AI-driven or agentic offensive security tooling in real operations. Active U.S. Government TS//SCI clearance with full-scope polygraph is a strong plus, enabling immediate work with our most sensitive customers. •Blue team, detection engineering, or incident response experience – you understand how defenders think and can help them get better. •Operational familiarity with MITRE ATT&CK, threat-informed defense, and regulated red team frameworks (e.g., TIBER-EU, CBEST, DORA). •Recognized contributions to the security community: research, open-source tooling, conference talks, or CVEs. •Penetration Testing IC5 - The typical base pay range for this role across the U.S. is USD $142,800 - $274,800 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 $188,000 - $304,200 per year. •4+ years experience in security or related field OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 6+ years experience in security or related field OR equivalent experience. Compensation: •$142,800 - $274,800 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!