2,100,573open jobs
132,004companies
239,675added this week
Browse all
Salary
≈ $102k – $263k per year (Estimated)
Location
Hybrid (London, United Kingdom)
Seniority
Architect
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 5, 2026. First seen by Alion on Oct 23, 2026. Citi scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Citi is one of the largest banks in the world, tracing its lineage to the City Bank of New York founded in 1812 and taking its modern shape through the 1998 merger that created Citigroup. Its most distinctive asset is a cross-border payments and treasury network unmatched by any competitor, moving trillions of dollars a day for multinational corporations, governments and other banks across roughly ninety countries. Alongside that institutional franchise it runs markets and investment banking, wealth management and a United States personal bank, and has spent recent years simplifying itself by exiting consumer operations across Asia, Europe and Latin America.

Why This Team

The Chief Information Security Office (CISO) is home to deeply talented colleagues that work to ensure the safety of Citi's clients', our revenue, our employees and our proprietary data. We manage information security as one end-to end program - one with a clear mandate and accountability. Our mission is a program that is fully anchored to modern control and architectural frameworks, is fully aligned with the enterprise architecture of the firm and is deeply integrated into the businesses and functions.

AI Security Specialist

AI models can now autonomously discover and exploit zero-day vulnerabilities in production software - and we're building the defensive capability to match. We're hiring across four CISO teams working at the intersection of AI and cyber security.

What Makes This Different

The problems we're solving don't have playbooks yet.

  • AI-driven vulnerability management. When frontier models can generate thousands of findings in a weekend, the bottleneck shifts from discovery to triage, verification, and remediation. We're building the pipeline that makes this sustainable.
  • Security architecture for the AI era. Defining how a global bank deploys, monitors, and governs agentic AI - from standards and evaluation frameworks to production runtime monitoring.
  • AI at scale, not in a lab. Citi has deployed AI tools to 180,000+ employees, equipped 30,000 developers with AI coding assistants, and is rolling out agentic AI capabilities firm wide. Securing that footprint and the platforms that underpin them is the job.
  • Securing AI agents that can behave like insider threats. Frontier models can harvest credentials, escape sandboxes, and adapt when they detect monitoring. We're designing the containment architectures and runtime controls to operate them safely at enterprise scale.
  • Real security engineering. This isn't a cyber seat where you'll spend your time in administration . You will be expected to understand the code, the architecture, the threats, and find solutions. You'll have the mandate and the backing to build something meaningful.

What You'll Work On

Depending on your background and interests, you could join one of four teams:

  • Offensive Security & Vulnerability Management - AI-assisted pen testing at a scale previously impossible. Automated exploit validation. Bridge the gap from "AI found a vulnerability" to "the application team has a PR to fix it."
  • AI & Emerging Technology Security - Define how the bank deploys AI safely. Security architecture and assurance for new implementations, plus building the next generation of AI-powered tools for our CISO colleagues. Test new models at the cutting edge of creation and influence.
  • Cyber Security AI Services - Own the AI products CISO depends on in production - security assurance, cyber security operations, governance and controls, vulnerability assessment. Keep them reliable, evolve them fast.
  • Cyber Security Operations - Detection, triage, and response for a world where adversaries use AI to find and exploit vulnerabilities faster than traditional detection can keep up. Behavioral analytics for AI agents. Playbooks for AI-originated attack scenarios.

Why Citi, Why Now

  • Real and urgent. Not an innovation lab. The threats are active, the work ships into production, and it protects one of the world's largest financial institutions.
  • Technical teams. These are engineering-led functions. Small teams, high autonomy, minimal governance overhead. We build tools, ship code, and measure ourselves by what we deliver - not slide decks.
  • Strong mandate. Executive sponsorship to move fast. You'll have the backing and resources to act on what you find.
  • Unique scope. Very few organizations operate at this intersection at this scale. The solutions you build will influence how the industry responds.

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)

We offer

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

  • 27 days annual leave (plus bank holidays)
  • A discretional annual performance related bonus
  • Private Medical Care & Life Insurance
  • Employee Assistance Program
  • Pension Plan
  • Paid Parental Leave
  • Special discounts for employees, family, and friends
  • Access to an array of learning and development resources

Visit our Global Benefits page to learn more.

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Sounds like Citi has everything you need? Then apply to discover the true extent of your capabilities

------------------------------------------------------

Job Family Group:

Technology

------------------------------------------------------

Job Family:

Information Security

------------------------------------------------------

Time Type:

Full time

------------------------------------------------------

Most Relevant Skills

Please see the requirements listed above.

------------------------------------------------------

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

------------------------------------------------------

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
2,100,573 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

AI/ML
Similar stack
Same company
London
$50k – $61k per year · In office · Part-Time · Southampton
AI/ML
AI Agents
Apply
In office · Full-Time · 2+ years exp · London
Python
Databases
Databricks
AI/ML
ElevenLabs
Multimodal AI
Computer Vision
Synthetic Data
Hugging Face
arXiv
Vision-Language-Action
World Models
Physical AI
DevOps
Vercel
Robotics
ROS
LeRobot
Analytics
Azure Data Factory
Apply
Hybrid · Full-Time · London
Apply
Hybrid · Part-Time · London · Leicester
Python
SQL
AI/ML
Machine Learning
DevOps
GCP
Azure
CI/CD
AWS
Apply
$62k – $79k per year · In office · Full-Time · London
Python
AI/ML
AI Agents
Apply
≈ $68k – $145k per year (Estimated) · Hybrid · Full-Time · Edinburgh · Leeds · London
DevOps
Azure DevOps
Azure
Management
Miro
Confluence
Jira
Agile
Apply
In office · London
Apply
General Manager 1 day ago
In office · London
Apply
Hybrid · Full-Time · London
Management
SharePoint
Apply
Hybrid · Full-Time · London
Management
SharePoint
Apply
See all jobs
This is one of many
2,100,573 more open roles from verified company boards, updated every day.