Microsoft Logo

Microsoft

Principal Security Engineer

Reposted 24 Days Ago
Be an Early Applicant
In-Office
Sydney, New South Wales, AUS
Senior level
In-Office
Sydney, New South Wales, AUS
Senior level
Secures Windows operating systems and devices through security design and code reviews, penetration testing, vulnerability research, fuzzing, and mitigation development. Builds reusable security tools, identifies vulnerabilities and attack vectors, partners with product engineering teams on scalable defenses, and engages with the external security research community.
The summary above was generated by AI
Overview

The Microsoft Windows Security team is looking for learn-it-all security engineers that will help secure Microsoft Windows products and devices, with focus on offensive security and security engineering & mitigations for Windows.The Windows Security team is responsible for securing the Windows client and server operating systems, used by billions of customers every day and in businesses worldwide. This team performs security design reviews, code reviews, penetration testing, vulnerability research and driving systematic mitigations to security risks on Windows to make sure they meet the highest possible security standards and proactively defend cybersecurity threats. This role is hands-on, technically demanding, and central to strengthening the security posture of OS platforms.  In this Principal Security Engineer role, you will uncover novel attack vectors, develop proof-of-concept mitigations, and partner directly with Windows product engineering teams to design durable & scalable defense. The successful candidate will have hands-on experience with native code (C/C++), penetration testing (code audit, writing fuzzers, finding creative ways to break assumptions), a clear understanding of OS security fundamentals, computer science skills, and a passion for keeping Microsoft customers safe. 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.


Responsibilities
  • Build reusable agents and tools to expedite and improve the consistency and quality of security reviews.
  • Review features and code for security defects and architectural risk using agents and automated tools built by you and others.
  • Be the security contact for teams building new innovative products and technologies in the next version of Windows and devices.
  • Identify security vulnerabilities in a wide variety of key OS features such as network protocols, security features, and Microsoft devices Leverage a broad and current understanding of security to devise new protections. 
  • Interact with the external security community and security researchers.
  • Collaborate with product teams to improve security, and articulate the business value of security investments.

Qualifications
  • Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 4+ years experience in security or related field OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 6+ years experience in security or related field.
    • OR equivalent experience.

Preferred Qualifications:

  • Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 4+ years experience in security or related field.
    • OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 6+ years experience in security or related field.
    • OR equivalent experience.
  • 2+ years identifying vulnerabilities in operating systems and/or native (C/C++) applications. 
  • 5+ years of experience in a software engineering or security-related engineering. 
  • Demonstrated experience in security research, especially around vulnerability discovery. 
  • Experience exploiting bugs and bypassing security mitigations in operating systems.
  • Familiarity with Microsoft Windows architecture. 

#W+DJOBS#WARP


This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.



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 with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

Similar Jobs

20 Days Ago
In-Office or Remote
Australia
Senior level
Senior level
Fintech • Cryptocurrency
Leads red-team and penetration-testing exercises, attack-surface analysis, threat research, AI application security testing, and offensive security tool development. Evaluates enterprise systems, cloud environments, APIs, and AI agents; develops attack scenarios, PoCs, automation, and technical reports. Partners with blue teams, infrastructure, engineering, and business teams to improve detection, incident response, governance, and security controls. Requires more than five years of offensive security experience and strong expertise in cybersecurity tools, programming, and AI security.
Top Skills: Ai AgentsAlibaba CloudAWSAzureBashBurp SuiteCi/CdCobalt StrikeDevsecopsDockerEdrEmbeddingFridaFunction CallingGoGoogle Cloud PlatformHidsImpacketJavaScriptKubernetesLinuxLlm ApismacOSMasscanMcpMetasploitMitre Att&CkNdrNist Ai RmfNmapNpsOwasp Llm Top 10Owasp Top 10PowershellPythonRagService MeshSIEMSliverTcp/IpTencent CloudVector DatabasesWafWindowsZero Trust
24 Days Ago
In-Office
Sydney, New South Wales, AUS
Expert/Leader
Expert/Leader
Fintech • Payments • Financial Services
Own and build Linkly’s internal penetration testing capability, lead threat modeling, assess Azure cloud infrastructure, review secure architecture, define security baselines, and validate product and service configurations. The role also provides security guidance for engineering initiatives, mentors security engineers, develops testing automation, and communicates findings and remediation recommendations to technical and non-technical stakeholders.
Top Skills: AWSAzurePci DssPowershellPython
2 Months Ago
In-Office
Sydney, New South Wales, AUS
Expert/Leader
Expert/Leader
Information Technology • Legal Tech • Professional Services • Analytics • Business Intelligence
Own regional customer security engagements across Australia, New Zealand, and Hong Kong. Lead security calls, questionnaires, Trust Center content, customer-facing documentation, contract reviews, and complex security escalations. Partner with sales, product, and global security teams to improve assurance processes, influence product roadmaps, and automate workflows using AI. Advise customers on information security controls, compliance frameworks, and privacy regulations while operating autonomously as the region’s senior security representative.

What you need to know about the Sydney Tech Scene

From opera to comedy shows, the Sydney Opera House hosts more than 1,600 performances a year, yet its entertainment sector isn't the only one taking center stage. The city's tech sector has earned a reputation as one of the fastest-growing in the region. More specifically, its IT sector stands out as the country's third-largest, growing at twice the rate of overall employment in the past decade as businesses continue to digitize their operations to stay competitive.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account