Microsoft
Senior Security Engineer
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Senior Security Engineer
Microsoft Offensive Research & Security Engineering (MORSE) – Senior Security Engineer (UK)
About the Role
Our Microsoft Offensive Research & Security Engineering (MORSE) team is seeking a Senior Security Engineer to protect Microsoft’s globally-used products and devices—notable for securing systems like Windows, Azure, and virtualisation platforms that support over a billion customers worldwide.
In this position, you’ll:
- Discover and mitigate security vulnerabilities at scale
- Identify weaknesses, assess their impact
- Drive security improvements across platform design and implementation
- Work alongside engineers to integrate security fundamentally into Windows, Azure, and infrastructure
The ideal candidate thrives on complex problem-solving, deep technical work and making a measurable difference to Microsoft’s security posture.
Microsoft fosters a culture of inclusion, empowering people and organisations to innovate with respect, integrity, and accountability—where everyone can thrive.
Responsibilities
Responsibilities involve technology application, collaborative security influence, and leadership. Selected responsibilities include:
- Discover and analyse security vulnerabilities across:
- Operating systems
- Platform components
- Technologies This includes conducting design reviews, code reviews, fuzzing, and variant analysis
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Develop and influence effective mitigation strategies to:
- Reduce vulnerabilities
- Enhance system resilience
- Tackle entire classes of threats
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Collaborate with engineering teams to:
- Embed security within the development lifecycle
- Refine secure engineering practices
- Drive architectural and design security improvements
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Develop & scale security tooling, detection, or analytical techniques to:
- Improve vulnerability coverage
- Detect risks early
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Drive systemic security outcomes by:
- Partnering cross-departmentally
- Translating findings into actionable protections
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Stay current on:
- Attacker techniques
- Novel vulnerability classes
- Industry trends
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Lead technical efforts by:
- Setting security direction
- Breaking down complex initiatives
- Delivering high-impact results
Qualifications
Required Qualifications:
- Significant security-related engineering experience (or expertise in another relevant security field)
- Hands-on experience with systems-level programming in C, C++, or Rust
Security Screening Requirements:
Ability to pass Microsoft’s mandatory security vetting, which includes:
- Microsoft Cloud Background Check (required upon hiring and every two years thereafter)
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Preferred Qualifications:
- Public or internal track record of impactful security research
- Deep understanding of:
- Operating system security principles
- Kernel-level or low-level platform components
- Experience in:
- Vulnerability research (commands familiarity with security practices like reverse engineering, fuzzing or exploit development)
- Mitigation implementation (including memory safety improvements, sandboxing, platform hardening, etc.)
Additional Details
Salary Information
- Penetration Testing IC4 salary range in the UK: £74,700.00 - £122,600.00 per annum
- Flexible benefits available for eligible roles.
Additional Resources
[Learn more about Microsoft’s UK pay and benefits structure.][https://careers.microsoft.com/v2/global/en/corporate-pay/united-kindom-corporate-pay.html]
Employment Information
- Minimum of 5 days open for applications
- Ongoing submissions until the position is filled
Microsoft’s commitment extends to equal opportunity, valuing diversity across protected characteristics including age, disability, gender identity, veteran status, and more.
For further assistance on accommodation requirements related to disability or religion during the application process, Microsoft guides our community inclusively. More here.
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