Senior AI Security & Evaluation Specialist (Risk)

Consult; Greater London; Hybrid; GBP 60,000 - 90,000; Part time

Job summary

OB Collective develops independent verification technology for organisations operating in government, regulated and high-assurance environments. We’re building a senior technical team for a UK public-sector R&D programme focused on the cybersecurity and operational assurance of AI agents.

We’re looking for a part-time Senior Cyber Security & Evaluation Specialist – AI Risk to lead the security-risk methodology and provide independent technical challenge throughout the research and evaluation

Qualifications

• Significant senior experience in cybersecurity risk, security architecture, threat modelling or technical security evaluation.
• Ability to distinguish evidence from assertion and challenge technically plausible but unsupported conclusions.
• Experience explaining complex technical risk to CISOs or equivalent senior security decision-makers.

Responsibilities

• Develop and challenge the threat model for consequential AI-agent actions.
• Identify credible threat scenarios, security assumptions and important failure conditions.
• Define practical consequence and exposure categories relevant to CISO and operational security decision-making.
• Translate research questions into measurable security evaluation criteria.
• Develop methods for assessing agent permissions, reachable systems and exercised access.
• Establish evidence-backed approaches to evaluating current exposure, organisational controls and residual risk.
• Define expert reference judgements and methods for comparing or calibrating security findings.
• Challenge how incomplete evidence, uncertainty and coverage limitations are represented.
• Design controlled misuse, failure and adversarial test scenarios.
• Review experimental methods for validity, reproducibility and potential bias.
• Work with engineers, independent security testers and operational practitioners.
• Assess whether mitigations produce a measurable and meaningful reduction in exposure.
• Help interpret negative, ambiguous or inconclusive research findings.
• Contribute to final evaluation conclusions, recommendations and technical limitations.

Skills

Senior cybersecurity risk

Security architecture

Threat modelling

Technical security evaluation

Operational cyber risk

Tools

MITRE ATLAS

OWASP guidance

Job description

OB Collective develops independent verification technology for organisations operating in government, regulated and high-assurance environments. We’re building a senior technical team for a UK public-sector R&D programme focused on the cybersecurity and operational assurance of AI agents.

We’re looking for a part-time Senior Cyber Security & Evaluation Specialist – AI Risk to lead the security-risk methodology and provide independent technical challenge throughout the research and evaluation