AI Security Architect — Enterprise-Scale Defense (EMEA)

Citi; Greater London; Hybrid; GBP 110,000 - 150,000; Full time

Benefits offered by this job

Hybrid working model (up to 2 days at,

Competitive base salary

27 days annual leave

Private Medical Care & Life Insurance

Pension Plan

Job summary

Citi is seeking an AI Security Specialist to join the Chief Information Security Office in London. You will lead security design for agentic AI, drive risk-aware implementation, and work across four CISO teams to secure production systems at scale.

You will combine deep expertise in offensive security and detection/SecOps with governance and evaluation frameworks, delivering robust controls and trusted AI deployments within a major financial institution.

Qualifications

• Strong record of technical leadership and architecture on complex, novel systems.
• Deep expertise building and scaling agentic/LLM systems with rigorous evaluation, guardrails, and production reliability.
• Demonstrated depth across both domains - able to lead credibly in offensive security and detection/SecOps.
• Advanced certs (OSWE, OSCE) and/or recognized AppSec/detection contributions (open source, research, conference talks) (nice to have)
• Experience defining AI governance/model-evaluation frameworks and addressing AI-security threats at scale (nice to have)

Responsibilities

• Offensive Security & Vulnerability Management — AI-assisted pen testing at scale and automated exploit validation.
• AI & Emerging Technology Security — Define how the bank deploys AI safely with security architecture and assurance.
• Cyber Security AI Services — Own AI products CISO depends on in production including security assurance and governance.
• Cyber Security Operations — Detection, triage, and response for AI-originated threats and incidents.

Skills

Technical leadership

Architecture

Offensive security

Detec­tion/SecOps

AI governance

Education

OSWE

OSCE

Tools

OSWE

OSCE

Job description

Citi is seeking an AI Security Specialist to join the Chief Information Security Office in London. You will lead security design for agentic AI, drive risk-aware implementation, and work across four CISO teams to secure production systems at scale.

You will combine deep expertise in offensive security and detection/SecOps with governance and evaluation frameworks, delivering robust controls and trusted AI deployments within a major financial institution.