L
London Stock Exchange
Offensive Security Engineer
Skills
CybersecurityAIWorkdayRisk Management
10 days ago
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Important information
Contract type:
Permanent
Location:
London, UK
Work mode:
Onsite
Published on:
13 October 2026
What they need
- This opportunity within the Offensive Security Operations team is a crucial role for the management of vulnerability discovery, offensive testing and remediation activities across the group which protects the business from sophisticated cyber threats!
- The role holder will work with our 3rd party vendors to plan and facilitate our testing programmes ensuring they run efficiently
- Regulatory Threat Intelligence Led Pen Testing (TLTP) and Red teaming
- Bug Bounty
- Continuous External Attack Surface Management
- Active Directory security posture management
- Any programme launched in the future aimed at driving dow
- The applicant will be a domain authority on vulnerability testing, impact and remediation. They will provide insight on root cause analysis and scalable risk management. This role requires working closely within a technical team and with external teams like BISOs, GSOC and regulators
- The candidate will stay ahead of emerging cyber security thought leadership and share their ideas for areas of improvement and innovation that drive continuous cyber security risk improvement
- In this role there are opportunities to explore and experiment with how AI and other types of automation can be used to improve our existing and future initiatives
- Collaborate with external vendors, regulators and leadership teams coordinating the timely delivery of requirements
- Review vulnerability reports, validate issues reported and triage based on risk
- Support teams in understanding vulnerabilities and validate fixes through retesting
- Coordinate remediation efforts by detailing actions, owners, timelines and follow up when appropriate
- Leverage engineering skills to automate and scale security programme objectives- Background in Red Teaming / Penetration Testing / Bug Bounty advantageous!
- Technology related Bachelor’s Degree or equivalent experience and certifications in cyber security
- Experience building AI agentic workflows or deploying and managing security tooling is also advantageous!
- Knowledge of security vulnerabilities and common software engineering flaws and Network Defence analytical models (Kill Chain, ATT&CK, OWASP top 10etc.)
- Ability to work in a fast-paced environment as a problem solver and barrier breaker with initiative
- Understanding of large scale enterprise IT system environments
- Strong verbal & written communication skills & presentation skills
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