Senior Penetration Tester - Identity
Microsoft Corporation
Dublin, Ireland
Job posting number: #7310532 (Ref:ms-1829550)
Posted: June 15, 2025
Job Description
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.
The IDSEC Security team is a specialized group dedicated to safeguarding our identity products and the services that support them. We partner closely with development and operations teams to continuously improve the security posture of both customer-facing applications and our internal network. Our mission To proactively uncover and remediate vulnerabilities before they can be exploited—by executing thorough, context-driven penetration tests against complex systems and services. What we do day-to-day Threat-informed testing: We start each assessment by reviewing existing security collateral—threat models, design documents, past findings—to build deep contextual understanding. Tailored engagement: Using that context, we craft and execute high-quality pentests that focus on the most critical components of our identity platform and underlying infrastructure. Collaborative remediation: We deliver actionable findings and work hand-in-hand with engineering teams to validate fixes and ensure our defenses stay one step ahead of attackers.
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.