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Microsoft UK • London, United Kingdom

Penetration Tester

Employment type:  Full time
8.4

/10

Transparency ranking
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Job Description

Overview

The Microsoft Offensive Research & Security Engineering (MORSE) team is looking for a learn-it-all engineer that will help secure Microsoft products and devices.

The MORSE team is responsible for securing Microsoft's operating systems, including Windows, cloud computing platforms, and virtualization technologies. These solutions support the daily needs of over one billion customers worldwide. This team performs security design reviews, code reviews, and vulnerability research on key features of Windows and Azure to make sure they meet the highest possible security standards.

In this role, you will help a team of engineers tasked with building automation and tooling to streamline and scale detection of vulnerabilities. The ideal candidate will have some of the following: hands-on experience with native code (C/C++), building developer-facing tools (such as fuzzers, static analysis tools or sanitizers), an understanding of OS security fundamentals, solid computer science skills, and a customer-centric focus.



Responsibilities

  • Equip Microsoft developers with powerful, easy-to-use security tools to catch security issues earlier
  • Improve existing processes and tools to help us deliver our goal of ubiquitous security testing
  • Collaborate across silos, with security teams, feature developers, and tooling and infrastructure teams to deliver impact through security tooling solutions.
  • Devise new methods to systematically detect vulnerabilities at scale


Qualifications

Required

  • Experience in a software engineering or security-related field
  • Software engineering in a systems language such as C, C++, or Rust

Preferred

  • Public track record of relevant security research.
  • Experience with native code review (C/C++) and vulnerability analysis, specifically in Operating Systems.
  • Experience with static analysis tools, running queries, and output analysis.
  • Familiarity with Microsoft Windows architecture.

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.

Company benefits

Wellbeing allowance
Health insurance
Dental coverage
Gym membership
Mental health platform access
Buy or sell annual leave
Shared parental leave
Charity donation scheme
Employee assistance programme
Employee discounts
Volunteer days – 3 days a year
Fertility treatment leave
Open to compressed hours
Open to job sharing
Fertility benefits
Enhanced sick pay
Enhanced sick days
Compassionate leave
Travel insurance
20 days annual leave + bank holidays
Enhanced maternity leave – 26 weeks paid
Enhanced paternity leave – 6 weeks paid
Adoption leave – 24 weeks paid
Childcare credits
Carer’s leave – 4 weeks paid
Cycle to work scheme
Faith rooms
Annual bonus
Annual pay rises
Company car
Hackathons
Open to part-time employees
Pregnancy loss leave
Life insurance
Equity packages
Financial coaching
Relocation packages
Sabbaticals
Enhanced pension match/contribution
Family health insurance
LinkedIn learning license
In house training
Personal development days
Pregnancy support

Working at Microsoft UK

Company employees:

Globally: 228,000

Gender diversity (m:f):

67:33

Hiring in countries

Germany

Netherlands

Spain

United Kingdom

Office Locations

Awards & Accreditations

Family Friendly

Family Friendly

Flexa awards 2025
Career Progression

Career Progression

Flexa awards 2025
Most flexible companies

Most flexible companies

Flexa100 2024

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