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We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.
From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas.
Security is foundational to this mission and must be delivered in a way that supports how our engineering teams build and operate complex systems at scale.
Take the next step in your career.
The Role
As a Penetration Tester, you will lead and conduct penetration tests and vulnerability assessments across a wide range of internal systems and security controls. Your work will directly strengthen our overall security posture through continuous testing, actionable insights and collaboration on remediation strategies.
Key Responsibilities
- Performing in-depth penetration testing across a variety of technologies, including Kubernetes, Jenkins and Windows Domain Services
- Delivering practical, impactful remediation advice to Control Owners based on identified vulnerabilities
- Supporting business and application owners in assessing and improving the effectiveness of their security controls
- Providing technical consulting and assurance to Risk, Compliance and Detection Engineering teams, including control assessments and configuration reviews
- Maintaining and enhancing the team’s operational tooling, automation and system integrations
- Mentoring and supporting less experienced team members, fostering knowledge sharing and growth
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Who Are We Looking For?
The ideal candidate will have the following skills and experience:
- Proven expertise across the full penetration testing lifecycle, from scoping and execution to reporting and stakeholder debriefs
- Deep understanding of vulnerability assessment practices, including effective remediation strategies for both infrastructure and application-level security
- Strong background in technical security roles across diverse environments; familiarity with DevOps technologies
- Experience validating the effectiveness of security controls through both manual and automated approaches
- Engineering experience, particularly in building automation and tooling to streamline team output
- Proficiency in development and scripting tools commonly used in DevSecOps, including Python, Jenkins and Ansible
- Relevant security certifications with OSCP required and CRT or OSEP desirable
- Strong communication and interpersonal skills, with an emphasis on clear and concise written output
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Why Join Us?
- Highly competitive compensation plus annual discretionary bonus
- Lunch provided via Just Eat for Business and dedicated barista bar
- 35 days’ annual leave
- 9% company pension contributions
- Informal dress code and excellent work-life balance
- Comprehensive healthcare and life assurance
- Cycle-to-work scheme
- Monthly company events
G-Research is committed to cultivating and preserving an inclusive work environment. We are an ideas-driven business and we place great value on diversity of experience and opinions.
We want to ensure that applicants receive a recruitment experience that enables them to perform at their best. If you have a disability or special need that requires accommodation please let us know in the relevant section.
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