Principal Software Engineer

Herzliya, Tel Aviv, Israel

• 3 more locations

Date posted

Sep 07, 2025

Job number

1871897

Work site

Up to 50% work from home

Travel

0-25%

Role type

Individual Contributor

Profession

Software Engineering

Discipline

Software Engineering

Employment type

Full-Time

The Cloud & AI 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. Microsoft is one of the largest enterprise service companies in the world.

The Microsoft Red Team attacks ALL Microsoft services, continually – identifying critical, systemic risks, demonstrating authentic attack chains and techniques, and working with engineering teams, investigators, and incident responders to continuously improve their ability to protect, detect, investigate, and respond to real attacks.

Microsoft Red Team is launching the AI Adversary Lab (AIAL) in ILDC (Microsoft Israel Development Center), a new extension of the Microsoft Red Team, to address the growing threat of AI-enabled adversaries through deep engineering and applied research.

The engineering team in AIAL will collaborate with U.S.-based Red Team engineers and Red Team operators to enhance and scale an AI-driven adversary emulation platform that we use to protect Microsoft. This new team will bring together deep expertise in large-scale artificial intelligence, autonomous agents, and generative models to address emerging security threats in Microsoft's complex and rapidly evolving digital environment. Defending one of the world's most diverse enterprise environments offers an unparalleled opportunity to build, deploy, and assess autonomous red teaming and defense capabilities using cutting-edge AI techniques.

As a Principal Software Engineer in the Microsoft Red Team, you will define and drive the technical strategy for advanced red team tools that leverage LLMs and autonomous agents, setting the foundation for automating and scaling red teaming operations. In this role, you will architect production-grade security capabilities with global impact, mentor senior engineers, and influence Microsoft's ability to stay ahead of evolving AI-driven threats.

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.

In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day.

Our teams focuses on the diversity of all types of candidates, and we strive to hire people with different experiences and perspectives into our teams. To that end, we know that no candidate has every desired skill and experience, but together we make a strong, effective teams.

• You have a B.Sc. or M.Sc. in computer science, software engineering, or equivalent experience.
• You have 10+ years of professional hands-on software development experience in an OOP programming languages (C# or Java preferred).
• Ability to set direction in ambiguous spaces, identify systemic risks, and deliver innovative solutions adopted across organizations

Preferred Qualifications

• Previous experience conducting or supporting red teaming, penetrating testing, or offensive security capabilities.
• Experience in Red Teaming, malware development or offensive cyber operations.
• Experience with prompt engineering or developing applications utilizing LLMs including designing, testing, and integrating prompts for LLM-based systems in production or research settings.
  Experience in designing, building, and operating large-scale resilient distributed systems.

Become a founding member of the AIAL group as part of Microsoft Red Team and help shape the team culture and practices.

• Define and drive the long-term technical strategy for AI-driven red team services, ensuring scalability, resilience, and adaptability to future threat landscapes.
• Contribute to red team tools for use by both human operators and AI-powered red teaming services.
• Collaborate with engineers, security researchers, red team operators, and cross-functional teams globally to deliver high-quality features, drive innovation, and achieve project goals.
• Continuously learn and apply new technologies to improve our services.
• Drive Microsoft's security improvements through realistic and effective red team operations.

Benefits/perks listed below may vary depending on the nature of your employment with Microsoft and the country where you work.

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Industry leading healthcare

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Educational resources

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Discounts on products and services

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Savings and investments

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Maternity and paternity leave

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Generous time away

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Giving programs

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Opportunities to network and connect

Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.