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About 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.
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
Requirements
- 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
Skills
- Python
- Jenkins
- Ansible
- OSCP
- CRT
- OSEP
- Communication skills
- Interpersonal skills
Location
- London
Work Type
- Full-time
Experience Level
- Senior
Education Level
- OSCP required
- CRT or OSEP desirable
Salary/Compensations
- Highly competitive compensation plus annual discretionary bonus
Benefits
- Lunch provided via Just Eat for Business
- Dedicated barista bar
- 35 days’ annual leave
- 9% company pension contributions
- Informal dress code
- Excellent work-life balance
- Comprehensive healthcare
- Life assurance
- Cycle-to-work scheme
- Monthly company events
About the Company
- 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.
- 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.
Equal Opportunity
- 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