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Principal Security Engineer

Microsoft


Job Location:

Vancouver - Canada

Yearly Salary: CAD 257500 - 257500
Posted: 7 October 2026 (14 hours ago)
Application Deadline: 4 January 2027
Vacancies: 1 Vacancy

Job Summary

Overview
The Microsoft Windows Security team is looking for a Principal Security Engineer to help secure Windows products and devices through offensive security vulnerability research and the development of scalable security mitigations.
The Windows Security team helps protect Windows client and server operating systems used by customers and businesses worldwide. The team performs security design and code reviews penetration testing and vulnerability research while developing defenses that strengthen Windows against evolving cybersecurity threats.
In this role you will identify and investigate complex security vulnerabilities and novel attack vectors across Windows develop proof-of-concept exploits and design durable mitigations for individual vulnerabilities and broader classes of security issues. You will apply deep knowledge of native code operating system security vulnerability research and offensive security techniques while partnering with Windows engineering teams to incorporate security into product architecture and design.
Microsofts 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
  • Conduct vulnerability research and offensive security assessments across Windows using techniques such as code auditing fuzzing penetration testing and exploitation to identify vulnerabilities and no
  • complex security risks and develop durable defenses.
  • Engage with internal and external security communities to understand emerging vulnerabilities attack techniques and opportunities to strengthen Windows securityvel attack vectors.
  • Review product architecture features and native code to identify security vulnerabilities and architectural risks using manual and automated security analysis techniques.
  • Develop proof-of-concept exploits and scalable mitigations that address identified vulnerabilities and broader classes of security issues.
  • Design and build reusable security tools and automation that improve the efficiency consistency and quality of security reviews and vulnerability discovery.
  • Partner with Windows product engineering teams to incorporate security into product design resolve


Qualifications
Required/minimum qualifications
  • Masters Degree in Statistics Mathematics Computer Science or related field AND 3 years experience in security or related field OR Bachelors Degree in Statistics Mathematics Computer Science or related field AND 4 years experience in security or related field OR equivalent experience.
  • Hands-on experience with offensive security techniques such as penetration testing vulnerability research exploit development or bypassing operating-system security mitigations
  • Experience identifying vulnerabilities in operating systems and/or native (C/C) applications.
Additional or preferred qualifications
  • Masters Degree in Statistics Mathematics Computer Science or related field AND 6 years experience in security or related field OR Bachelors Degree in Statistics Mathematics Computer Science or related field AND 8 years experience in security or related field OR equivalent experience.
  • 5 years of experience in software engineering security engineering or a related technical field.
  • Demonstrated experience in security research particularly vulnerability discovery.
  • Experience exploiting vulnerabilities and bypassing security mitigations in operating systems.
  • Familiarity with Microsoft Windows architecture and operating system internals.


Penetration Testing IC5 - The typical base pay range for this role across Canada is CAD $142400 - CAD $257500 per year.

Find additional pay information here:
Testing IC5 - Léchelle salariale de base typique pour ce rôle dans lensemble du Canada est de 142400 $ CAD à 257500 $ CAD par année.

Pour plus dinformation au sujet de la rémunération veuillez cliquer ici:
poste sera ouvert pendant au moins cinq jours et les candidatures seront acceptées de façon continue jusquà ce que le poste soit pourvu.


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



Microsoft est un employeur offrant légalité daccès à lemploi. Tous les candidats qualifiés seront pris en considération pour lemploi sans égard à lâge à lascendance à la citoyenneté à la couleur aux congés médicaux ou familiaux à lidentité ou à lexpression de genre aux renseignements génétiques à létat dimmigration à létat matrimonial à létat de santé à lorigine nationale à un éventuel handicap physique ou mental à laffiliation politique au statut de vétéran protégé ou au statut militaire à la race à lethnie à la religion au sexe (y compris la grossesse) à lorientation sexuelle ou à toute autre caractéristique protégée par les lois ordonnances et règlements locaux applicables. Si vous avez besoin daide avec des accommodements religieux et/ou dun accommodement raisonnable en raison dun handicap pendant le processus de candidature apprenez-en plus sur la demande daccommodement.


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.


Required Experience:

IC