Penetration Testing Specialist

Penetration Testing Specialist - M365 - Offensive Security

Sydney, New South Wales, Australia

• 3 more locations

Date posted

Oct 16, 2025

Job number

1897880

Work site

3 days / week in-office

Travel

0-25%

Role type

Individual Contributor

Profession

Security Engineering

Discipline

Penetration Testing

Employment type

Full-Time

Overview

Security represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft 365 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 365 Security team accelerates Microsoft's mission and bold ambitions to ensure that our company is securing our platforms, devices, and clouds. 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.

Are you passionate about identifying and exploiting security vulnerabilities that impact hundreds of millions of users across the world? Join the M365 Security organization, where you will emulate real-world advanced persistent threats against Microsoft. Our mission is to ensure Microsoft is prepared to face and respond to even the most determined adversaries by exploring innovative ways to identify and prevent security flaws.

We are looking for a Penetration Testing Specialist to execute operations and collaborate with other experienced pen testers in identifying and exploiting vulnerabilities across all layers of services, including application, cloud, network, hardware, and operational security domains. You will work closely with developers and security personnel from multiple teams across Microsoft. Additionally, as a Security Engineer in M365, you will be responsible for executing tactics, techniques, and procedures of potential attackers, while providing critical insights that empower our security teams to strengthen defenses and protect against the evolving landscape of digital 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.

Qualifications

Required Qualifications:

• 3+ years experience in identifying security vulnerabilities, software development lifecycle, large-scale computing, modeling, cyber security, and anomaly detection.

Other Requirements:

Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:

• Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Preferred Qualifications:

• Master's Degree in Statistics, Mathematics, Computer Science

• OR related field

• OR 4+ years experience in identifying security vulnerabilities, software development lifecycle, large-scale computing, modeling, cyber security, and anomaly detection.

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Responsibilities

• Discover and exploit vulnerabilities end-to-end in order to assess the security of services.
• Execute operations using real world adversarial tactics and techniques to validate a production service's ability to detect, investigate, and respond.
• Advocate for security change across the company through building partnerships and clearly communicating impact of risks.
• Analyze a wide array of data sources to identify potential security weaknesses and breach points within Microsoft's infrastructure.
• Prototype tools and techniques to scale and accelerate offensive emulation and vulnerability discovery.
• Collaborate with Blue Teams to improve readiness and produce solutions for defenders and customers.
• Analyze simulated adversary tactics and communications, enriching our defensive tactics and threat intelligence.

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.

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