Senior Adversary-Led Cyber Advisor for M&A

Aon plc; Greater London; On-site; GBP 110,000 - 150,000; Full time

Job summary

Aon plc in London is seeking a Senior Cyber Security Consultant to apply an attacker’s mindset in an advisory setting, focusing on cyber due diligence and risk assessment for private equity and corporate clients. The role blends technical review with executive‑level communication in a fast‑paced, client‑facing environment.

Ideal candidates bring offensive security experience and a desire to translate complex findings into actionable risk mitigation and value for investors and management teams.

Qualifications

• Experience in red teaming or offensive security gained in consultancy, in‑house or government settings.
• Understanding attacker techniques and how to apply them in advisory risk contexts.
• Ability to communicate complex security concepts to non‑technical stakeholders.

Responsibilities

• Lead technical cyber security reviews as part of cyber due diligence and portfolio engagements.
• Assess client environments from an adversary perspective to identify realistic attack paths.
• Review external attack surface and internet-facing exposure using passive techniques and threat intel.
• Evaluate security controls against attacker techniques mapped to MITRE ATT&CK.
• Translate technical findings into prioritized risks, remediation roadmaps and investor‑facing guidance.
• Produce high‑quality reports and executive briefings for clients.

Skills

Red teaming

Penetration testing

Adversary simulation

Cyber risk assessment

Job description

Aon plc in London is seeking a Senior Cyber Security Consultant to apply an attacker’s mindset in an advisory setting, focusing on cyber due diligence and risk assessment for private equity and corporate clients. The role blends technical review with executive‑level communication in a fast‑paced, client‑facing environment.

Ideal candidates bring offensive security experience and a desire to translate complex findings into actionable risk mitigation and value for investors and management teams.