Senior Security Researcher

Senior Security Researcher | Microsoft Careers Skip to main content Microsoft Careers Careers Careers Search Search jobs Sign in Single PositionView All JobsSenior Security ResearcherUnited States, Washington, RedmondApply nowAdd to cartFind out how well you match with this jobUpload your resumeJob descriptionCompany and benefitsJob number200044629Date postedJul 21, 2026Work site3 days / week in-officeTravelLess than 25%ProfessionSecurity EngineeringDisciplineSecurity ResearchRole typeIndividual ContributorEmployment typeFull-TimeOverviewThe 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.Are you interested in being intimately involved in the latest, cutting-edge developments in the security industry and having a direct impact on the security of all Microsoft customers? Are you interested in a fast-paced job full of new opportunities? If so, you might be a candidate for the IDFIRE team within the Global Hunting, Oversight, and Strategic Triage (GHOST) organization.   IDFIRE, is the premier identity cyber threat hunting and investigation team in the industry. We are looking for an experienced Senior Security Researcher with a analytical background to join our team to perform threat hunts, assist with investigations, develop threat intelligence, and to cultivate investigation best practices into Microsoft tooling and products.  We partner with data scientists and engineers to ensure the integrity and security of the services we operate (Entra & Microsoft Account), as well as the consumer and commercial identities we manage.  We are seeking a talented individual to join our world-class team of Security Researchers. Your passion for protecting customers, comfort with ambiguity, and motivation to deliver consistent performance under high pressure, will be highly valued. Your ability to efficiently sift through PB sized datasets via automation to extract key insights in a timely manner, will be critical in helping us continue to successfully execute against our mission. If you are motivated by the challenge of using your skills & knowledge to help protect Microsoft and the world from cyber threats - come join us!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.ResponsibilitiesThis role is part of a collaborative team, assisting our customers with:  •    Responding to security incidents (on-call) spanning fraud, abuse and compromise and identity-related operational issues to identify, isolate, remediate, and root cause •    Performing deep analysis of attacker activity in on-premises and cloud environments  •    Identifying potential threats, allowing for proactive defence before an actual incident  •    Building proof-of-concept and prototype threat hunting tools, automations, and new capabilities  •    Driving product and tooling improvements by conveying learnings from threat hunting and...