Security Researcher

Security is one of the most critical priorities for customers operating in today’s complex and rapidly evolving threat landscape. Microsoft Security is committed to making the world a safer place by delivering an integrated security cloud that empowers users, customers, and developers with end‑to‑end, simplified protection. Our mission is to secure digital platforms, identities, devices, and cloud environments across diverse customer ecosystems while also safeguarding Microsoft’s own internal estate. Our culture is rooted in a growth mindset, continuous learning, and a drive for excellence. We encourage teams to contribute meaningfully every day, fostering an environment where innovation thrives and creates meaningful impact for billions of people worldwide. The Defender Experts (DEX) team plays a vital role in this mission by delivering expert‑led cybersecurity investigations at scale. By leveraging rich telemetry and signals from Microsoft 365 Defender and other Microsoft security technologies, DEX helps customers quickly understand, validate, and respond to suspicious or malicious activity in their environments. We are seeking for Security Researchers with proven experience in security investigations, attacker tradecraft analysis, and signal correlation. In this role, you will analyze complex security data, apply deep threat‑landscape expertise, and determine whether activity represents a real threat. You will provide clear, actionable findings and recommendations that strengthen customer security. This position is well suited for security professionals who thrive on analytical problem‑solving, attacker behavior research, and impactful, customer‑focused work.