The Senior Software Engineer role in Core OS focuses on building threat-resistant platform capabilities for Windows Server across various deployment environments. This hands-on engineering position involves translating security architecture and threat models into functional code while implementing secure-by-design features. The team combines deep systems engineering with AI innovation to enhance enterprise environments. The mission is to empower organizations by delivering trusted and impactful solutions.

• Bachelor's Degree in Computer Science or related technical field and 4+ years of technical engineering experience with coding in languages including C, C++, C#, or Python, or equivalent experience.
• 6+ years of professional software engineering experience with coding in one or more languages such as C, C++, C#, Python, Rust, PowerShell, or Kusto.
• Experience or demonstrated interest in OS fundamentals and/or software and system security.
• Demonstrated experience in confidential computing and secure cryptographic practices.
• Familiarity with platform security controls such as Secure Boot, TPM, and virtualization-based security.
• Understanding of threat modeling and modern attacker techniques.

• Design and implement the validation framework to test and maintain secure-by-design features with automated test coverage.
• Build observability pipelines through telemetry insights and security metrics to measure control effectiveness in production.
• Contribute to threat modeling and security reviews, building mitigations for high-severity threats.
• Support security incidents and partner with various teams to assess impact and deliver remediation fixes.
• Incorporate real-world attack patterns and operational constraints into security practices.

• Employees at Microsoft are often offered comprehensive, “world-class” benefits—including health and mental-wellness programs, competitive pay with bonuses and stock awards, and retirement/savings options. Time-off and flexibility are common, with generous vacation and holidays, parental and caregiver leave, and flexible work schedules, alongside learning support, employee resource groups, product discounts, and matching-gifts/volunteering programs. Specific benefits can vary by region.