Security Researcher

Overview Microsoft Security is committed to making the world safer in an era of rapidly evolving digital threats and determined human adversaries. The Microsoft Defender Experts (DEX) team combines deep security expertise with Microsoft security products, telemetry, threat intelligence, and partnerships across the company to help customers detect, investigate, understand, and respond to advanced threats.

Within DEX Operations, Threat Researchers operate where customer defense, threat hunting, incident investigation, and detection innovation meet. We are curious, collaborative, and comfortable working through uncertainty. We learn from real-world attacks, turn frontline insights into stronger protection, and continuously improve how we defend customers at global scale. We are looking for an experienced Threat Researcher to join the DEX Operations team. You will investigate suspicious activity across customer environments, hunt for sophisticated adversaries, perform root-cause analysis, and transform complex security data into clear, actionable protection outcomes. You will use broad telemetry across the Microsoft Defender ecosystem and other security platforms to identify attacker behavior, surface detection gaps, and help customers respond quickly and confidently.