The Principal Software Engineer role within the Defender Experts Team at Microsoft Security focuses on designing and building full-stack capabilities to enhance the detection and investigation of security incidents. This position involves working with cloud-scale backend services, APIs, and AI-powered experiences, tackling complex engineering challenges at the intersection of distributed systems and cybersecurity. The team values collaboration and innovation, aiming to create reliable and scalable customer experiences. Candidates will have opportunities to influence technical design and mentor other engineers while contributing to a culture of learning and experimentation.

• Bachelor's Degree in Computer Science or related technical discipline AND 6+ years of technical engineering experience with coding in languages including, but not limited to, C#, Java, C++.
• 5+ years of professional software engineering experience designing, building, and delivering high-quality production software.
• 3+ years of experience building cloud services, distributed systems, or AI-powered systems.
• Experience building and shipping AI-powered features in production, using technologies such as large language models (LLMs) or machine learning models.
• Experience with machine learning frameworks and libraries, such as PyTorch or TensorFlow.

• Design, build, and operate highly scalable, real-time cloud services and data-processing systems using Azure technologies.
• Develop AI-powered security capabilities to solve complex security scenarios and expand automation.
• Own features end to end, from architecture and design through implementation and continuous improvement in production.
• Provide technical leadership and mentorship to engineers, establishing optimal engineering practices.
• Collaborate across engineering, product, and security disciplines to improve threat detection and response experiences.

• 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.