Posted last month
Principal Security Engineer
@ Microsoft
Vancouver, British Columbia
Overview
Microsoft is hiring a Principal Security Engineer for its Windows Security team to find and fix vulnerabilities in Windows through offensive security and vulnerability research. The work includes code audits, fuzzing, penetration testing, exploit development and designing durable mitigations, with pay in the CAD $142,400 to $257,500 range per year.
Pay:
$142,400–$257,500 a year
Responsibilities:
- Conduct vulnerability research and offensive security assessments across Windows
- Review product architecture and native code for security flaws
- Develop proof-of-concept exploits and scalable mitigations
- Build reusable security tools and automation
- Partner with Windows engineering teams on secure design
Requirements summary:
- Master's or Bachelor's degree in a related field plus 4 to 6+ years in security
- Hands-on offensive security and exploit development experience
- Experience finding vulnerabilities in operating systems or C/C++ applications
- 5+ years in software or security engineering (preferred)
- Familiarity with Windows architecture and internals (preferred)
Tools & skills
Source and dates
Source type not verified · eightfold
- Employer posting date
- 2026-10-05
- First seen by our source
- 2026-10-10
- Source record updated
- 2026-10-15
These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.
Job details
| Seniority | Lead |
| Department | Software development |
| Experience | 4+ years |
| Hours per week | 40 (estimated) |
| Work setting | Office |
| Position | Mostly sitting |
| Physical demands | physical low · computer high |
| Languages | English, French |
| Education | Bachelor’s degree (preferred), Master’s degree (preferred) |
| Fields of study | Computer Science, Mathematics, Statistics |
Summary and details written by AI from the posting; the employer’s posting is the authority.
Microsoft
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Full company description
Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all mentality. We show up cheering on others, knowing their success doesn't diminish our own. We show up every day open to learning our own biases, changing our behavior, and inviting in differences. Because impact matters. Microsoft operates in 190 countries and is made up of approximately 228,000 passionate employees worldwide.
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- Business categories
- Cloud Security
- Mobile Apps
- Gaming
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- Business Development
- Data Management
- Software
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- Microsoft
- Specialties
- Business Software
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- and IT Professional
- Profile identifies a recruitment agency
- No
- Reported total investment
- 1,000,000
Currency and observation date were not supplied; this is not a current valuation or a funding round.
Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all…
| Field | Value |
|---|---|
| Industry | Software Development |
| Company size | 10,001+ employees |
| Headquarters | Redmond, Washington |
| Organization type | Public Company |
| Specialties | Business SoftwareDeveloper ToolsHome & Educational SoftwareTabletsSearchAdvertisingServersWindows Operating SystemWindows Applications & PlatformsSmartphones |
| Open jobs on Jobsy | 127 |
| View page |
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.
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
- 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
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.
Hands-on experience with offensive security techniques such as penetration testing, vulnerability research, exploit development, or bypassing operating-system security mitigations
Additional or preferred qualifications
Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 8+ years experience in security or related field OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 12+ 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 $142,400 - CAD $257,500 per year.
Find additional pay information here:
https://careers.microsoft.com/v2/global/en/canada-pay-information.html
Penetration Testing IC5 - L'échelle salariale de base typique pour ce rôle dans l'ensemble du Canada est de 142,400 $ CAD à 257,500 $ CAD par année.
Pour plus d'information au sujet de la rémunération, veuillez cliquer ici:
https://careers.microsoft.com/v2/global/en/canada-pay-information.html
Ce poste sera ouvert pendant au moins cinq jours et les candidatures seront acceptées de façon continue jusqu’à 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 l’égalité d’accès à l’emploi. Tous les candidats qualifiés seront pris en considération pour l’emploi, sans égard à l’âge, à l’ascendance, à la citoyenneté, à la couleur, aux congés médicaux ou familiaux, à l’identité ou à l’expression de genre, aux renseignements génétiques, à l’état d’immigration, à l’état matrimonial, à l’état de santé, à l’origine nationale, à un éventuel handicap physique ou mental, à l’affiliation politique, au statut de vétéran protégé ou au statut militaire, à la race, à l’ethnie, à la religion, au sexe (y compris la grossesse), à l’orientation sexuelle ou à toute autre caractéristique protégée par les lois, ordonnances et règlements locaux applicables. Si vous avez besoin d’aide avec des accommodements religieux et/ou d’un accommodement raisonnable en raison d’un handicap pendant le processus de candidature, apprenez-en plus sur la demande d’accommodement.
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.
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