CareerPlanSign in

Principal Security Engineer

United States, Washington, Redmond💼 Full-time🗓 2026-09-16 → 2026-09-30

Core

Identify and analyze security vulnerabilities in operating system and platform components, develop mitigations, and integrate security into the engineering lifecycle.

Role type

Principal Security Engineer (Systems/OS Security)

Builds

Security tooling, detection capabilities, and systemic improvements for platform resilience.

Domain

Operating Systems, Platform Security, Systems Programming

Required skills

vulnerability research, code review, fuzzing, reverse engineering, exploit development, memory safety protections, sandboxing, platform hardening, systems-level programming (C/C++/Rust), technical leadership, mentorship

Preferred skills

public or internal track record of relevant security research, design review, variant analysis

Technologies

C, C++, Rust

Responsibilities

Drive identification and analysis of security vulnerabilities across OS and platform components; Develop and influence mitigations and protections that reduce risk; Advocate for security with engineering teams to integrate security into the development lifecycle; Contribute to the development and scaling of security tooling and detection capabilities; Provide technical leadership and mentor peers on new approaches and best practices; Coordinate across teams to resolve vulnerabilities, threat attacks, and security issues.

Sourced via microsoft · Listed on CareerPlan, which tracks 855,000+ jobs from 20+ sources.