Principal Software Engineer - Security for Co-Pilot

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Security represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft Security aspires to make the world a safer place for all. We want to reshape security and empower every user, customer, and developer with a security cloud that protects them with end to end, simplified solutions. The Microsoft Security organization accelerates Microsoft’s mission and bold ambitions to ensure that our company and industry is securing digital technology platforms, devices, and clouds in our customers’ heterogeneous environments, as well as ensuring the security of our own internal estate. Our culture is centered on embracing a growth mindset, a theme of inspiring excellence, and encouraging teams and leaders to bring their best each day. In doing so, we create life-changing innovations that impact billions of lives around the world.

We are looking for a Principal Software Engineer - Security for Co-Pilot to join the Security Copilot team and serve as a critical link between cutting-edge AI security research and real-world product delivery. This role is ideal for an engineer who thrives at the intersection of research, product thinking, and engineering execution, turning novel ideas into impactful features that enhance security outcomes for our customers. You will partner closely with applied researchers, product managers, and engineering teams to translate research prototypes into production-ready systems. You will bring structure and clarity to ambiguous problem spaces, drive cross-functional alignment, and coach engineers to deliver secure, scalable, and innovative AI-based security solutions. This hybrid position is located at our Microsoft office in Redmond, Washington. Relocation support will be provided if needed.

Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.

Required/Minimum Qualifications:

• Bachelor's Degree in Computer Science, or related technical discipline AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
  • OR equivalent experience.
• Experience with coding languages such as C++, C#, Python, or Java, with a strong grasp of systems and application-level software development.
• Demonstrated track record of taking ambiguous technical ideas and shaping them into scoped, buildable, and impactful engineering work.
• Experience working on AI agents, generative AI, and large-scale distributed systems.

Other Requirements:

Ability to meet Microsoft, customer, and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings:

Microsoft Cloud Background Check: This position will be required to pass the Microsoft background and Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Software Engineering IC6 - The typical base pay range for this role across the U.S. is USD $163,000 - $296,400 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $220,800 - $331,200 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: https://careers.microsoft.com/us/en/us-corporate-pay

Microsoft will accept applications for the role until July 8, 2025.

• Drive the maturation of research prototypes into robust, production-grade features and services.
• Collaborate with product, research, and UX teams to shape and validate scenarios from conception to launch.
• Maintain engineering excellence through rigorous testing, observability, and site reliability.
• Mentor engineers through technical deep dives while ensuring clarity on priorities and impact.
• Champion a growth mindset and a customer-first, secure-by-design approach.