Microsoft
Senior Security Engineer
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Senior Security Engineer
Epidemiology and Neurotech Officer
The Role
The Microsoft Offensive Research & Security Engineering (MORSE) team is seeking a Senior Security Engineer to proactively secure Microsoft’s core products, systems, and digital platforms for over a billion daily users globally.
As part of this critical security engineering team, you will:
- Drive the discovery, analysis, and mitigation of vulnerabilities across operating systems, cloud platforms, and virtualisation technologies
- Partner with engineering teams (Windows, Azure, platform infrastructure) to integrate security improvements into product design and development
- Develop sophisticated mitigations, security tooling, and defences against evolving threats at scale
This role is perfect for security-minded engineers who excel in systems-level problem-solving, attack simulation, and driving impactful security outcomes.
At Microsoft, our collective mission is to empower every person and organisation globally. We foster a culture grounded in respect, integrity, and accountability, where collaborative innovation sustains constant progress and ensures every employee can thrive.
Key Responsibilities
Security Vulnerability Research & Mitigation
- Conduct in-depth design and code reviews to uncover vulnerabilities in system and platform components
- Employ fuzzing, variant analysis, and technical deep dives to assess weaknesses across a broad spectrum
- Lead technical assessments of emerging security threats and their risks
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Security Hardening & Tooling
- Design and scale proactive protection mechanisms to reduce risk across product ecosystems
- Contribute to innovation in security automation, detection tooling, and vulnerability classification
- Advise cross-functional teams on secure coding practices and integration into the Software Development Lifecycle (SDL)
Threat Intelligence & Industry Leadership
- Stay at the forefront of attacker methodologies, vulnerability discovery, and mitigation patterns
- Translate complex security findings into actionable recommendations and systemic improvements
- Provide technical leadership, guiding complex security initiatives and influencing strategic security direction
Requirements
Essential Skills & Experience
✔ Solid technical foundation in security-related software engineering or other security disciplines. ✔ Hands-on proficiency in systems-level programming (C, C++, or Rust). ✔ Proven ability to meet Microsoft security screening requirements, including:
- Annual Microsoft Cloud Background Checks (in-line with company policy)
Preferred Attributes
🔹 Public or internal track record in vulnerability discovery (penetration testing, research, exploits). 🔹 Deep understanding of operating system security, with experience in kernels, virtualisation, or low-level platform components. 🔹 Experience with vulnerability research techniques, including:
- Code review, fuzz testing, reverse engineering, or exploit development
- Developing security hardening, defence mechanisms (memory safety, sandboxes, etc.)
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Compensation & Benefits (UK)
- Typical base salary range: £74,700.00 – £122,600.00 per annum
- Competitive benefits package, with additional compensation opportunities for eligible roles.
- Explore full details and additional perks here.
This position will remain open for at least 5 days, with applications evaluated on a rolling basis.
Candidate Policy
Microsoft is committed to equal opportunities and diversity. All qualified applicants will be evaluated without consideration for: age, ancestry, citizenship, color, disability, gender identity, immigration status, marital status, medical condition, military status, national origin, pregnancy/childbirth, race, religion, sex, sexual orientation, or any other characteristic protected by law.
For accommodations during recruitment, please visit [Microsoft’s accommodation policy page].
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