The Senior Site Reliability Engineer will join the Microsoft Defender engineering team, focusing on building and delivering cloud solutions for secure government environments. This role involves ensuring the reliability and performance of critical services while collaborating with engineering teams. The engineer will also be responsible for automating deployments and driving compliance with security standards. The team aims to protect millions of computers from active cyber threats.

• Master's Degree in Computer Science, Information Technology, or related field AND 2+ years technical experience in software engineering, network engineering, or systems administration OR Bachelor's Degree in Computer Science, Information Technology, or related field AND 4+ years technical experience in software engineering, network engineering, or systems administration OR equivalent experience.
• Candidates must have an active TS and be willing and eligible to upgrade to TS/SCI (with polygraph) or have an active TS/SCI and be willing and eligible to upgrade to TS/SCI (with polygraph).
• 3+ years technical experience working with large-scale cloud or distributed systems.
• Proficiency in one or more programming languages such as C#, Go, Java, or Python.

• Act as a Designated Responsible Individual (DRI) in an on-call rotation, leading incident response and resolution to maintain uptime and performance.
• Execute and improve manual operations and deployments for products while designing automation to scale and streamline those processes.
• Develop automation for monitoring, alerting, debugging, and deployment to reduce manual effort and accelerate safe, reliable delivery.
• Ensure systems meet Microsoft’s standards for security, privacy, and accessibility.
• Conduct postmortems, share insights, and implement solutions that prevent recurrence.
• Partner with engineering and product teams to align reliability goals with customer needs.
• Continuously invest in technical growth to improve system availability, observability, and performance.

• 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.