Note: The job is a remote job and is open to candidates in USA. Microsoft is hiring Senior and Principal Security Engineers for its Windows Security team. The role focuses on securing Windows services through security reviews, penetration testing, vulnerability discovery, reusable security tools, and collaboration with product engineering teams to develop scalable defenses.
Responsibilities
Lead and participate in security reviews to identify and mitigate risk in Microsoft services, including design review, code reviews, and penetration testing
Build reusable agents and tools to expedite and improve the consistency and quality of security reviews
Review deployments and code for security defects and architectural risk using agents and automated tools built by you and others
Safely demonstrate the real-world impact of security flaws to aid in prioritization and fix validation
Be the security contact for teams building new innovative products and services that will be deployed and used by billions
Apply an adversary mindset to creatively bypass security controls
Leverage a broad and current understanding of security to devise new protections
Collaborate with engineering teams to improve security and articulate the value of security investments
Skills
Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 4+ years experience in security or related field
Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 6+ years experience in security or related field
Equivalent experience
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
2+ years identifying vulnerabilities in online services, deployment misconfigurations
5+ years of experience in software engineering or security-related engineering
Public track record of relevant security research, especially around vulnerability discovery
Company Overview
Microsoft provides computer software, consumer electronics, cloud computing platforms, and digital enterprise systems. It was founded in 1975, and is headquartered in Redmond, Washington, USA, with a workforce of 10001+ employees. Its website is
Company H1B Sponsorship
Microsoft has a track record of offering H1B sponsorships, with 5083 in 2026, 9192 in 2025, 9343 in 2024, 7677 in 2023, 11403 in 2022, 7210 in 2021, 7852 in 2020. Please note that this does not guarantee sponsorship for this specific role.