Cloud Security Threat Modeler Senior Analyst (AVP)

Citigroup Inc.; City Of London; Hybrid; GBP 100,000 - 125,000; Full time

Job summary

A global financial services firm in London is seeking a skilled cybersecurity professional to join their Cloud Threat Modeling team. The role involves identifying threats and mitigation strategies in the public cloud environment, requiring extensive cybersecurity experience and strong scripting skills. You'll enjoy a flexible working environment, competitive salary, and numerous benefits including annual leave and private medical care.

Benefits

27 days annual leave

Discretionary annual performance bonus

Private Medical Care

Employee Assistance Program

Pension Plan

Paid Parental Leave

Special discounts for employees

Access to learning resources

Qualifications

• Extensive experience in a Cybersecurity role.
• Proven experience with Jira or other similar ticketing systems.
• Strong understanding of security best practices.
• Experience with scripting languages like Python or PowerShell.
• Familiarity with threat modeling methodologies.
• Ability to identify vulnerabilities using CWE or OWASP frameworks.

Responsibilities

• Perform Threat Modeling using a documented process.
• Development of automation tools as required.
• Maintain a high standard of work in identifying threats.
• Delivery of threat models and supporting tasks on time.
• Present work to seniors and other technical teams.

Skills

Cybersecurity principles

Threat modeling

Scripting languages

Analytical skills

Documentation skills

Communication skills

Tools

Jira

Terraform

Cloud platforms

Job description

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Overview of Chief Information Security Office (CISO):

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 sectors and functions.

Overview of the Role:

Citi is looking for a security focused person with a good understanding of cybersecurity principles to work in the Cloud Threat Modeling team. Using threat modeling you will identify threats and specify mitigating controls which will directly reduce the risk of Citi operating in the public cloud.

Responsibilities

• Perform Threat Modeling using a documented process
• Development of automation tools as required
• Maintain a high standard of work in identifying threats and specifying mitigating controls
• Attending to the lifecycle of identified threats and controls
• Delivery of threat models and supporting tasks within existing timeframes
• Provide feedback, support, and improvements to the existing threat modeling process
• Present work to seniors, the team, and other technical teams

Qualifications

• Extensive experience in a Cybersecurity role.
• Proven experience with Jira or other similar ticketing systems.
• Strong understanding of security best practices related to Authentication, Authorization, Logging/Monitoring, Encryption, Infrastructure Security, and Network Segmentation.
• Experience with scripting languages (e.g., Python, Bash, PowerShell) or Infrastructure as Code tools (e.g., Terraform, CloudFormation).
• Familiarity with threat modeling methodologies like STRIDE, PASTA, Attack Trees, and the MITRE ATT&CK framework, as well as threat modeling tools (e.g., IriusRisk, ThreatModeler, Microsoft Threat Modeling Tool).
• Ability to identify vulnerabilities using CWE or OWASP frameworks.
• Working knowledge of Operating Systems (e.g., Windows, Linux) and their hardening best practices.
• Familiarity with Development Concepts such as CI/CD pipelines, and SDLC.
• Working knowledge of Cloud Platforms (e.g., AWS, Azure, GCP).
• Ability to design and review technical architectures.
• Strong analytical skills, diligence, and attention to detail.
• Excellent skills in creating and maintaining high-quality documentation.
• Demonstrated ability to work effectively with diverse individuals and teams.
• Excellent written and verbal communication skills.
• A passion for continuous learning and staying up-to-date with new technologies and methodologies.
• Proven ability to build relationships across multiple cross‑functional teams.

Preferred Qualifications

• Proven experience specifically focused on Threat Modeling.
• Experience with Docker, Kubernetes, Serverless Technologies (e.g., AWS Lambda, Azure Functions, Google Cloud Functions), and Helm.
• Familiarity with Cloud Development Kit (CDK) and GitOps principles.
• Experience supporting or performing Penetration Testing activities (e.g., vulnerability scanning, network penetration testing, web application testing, mobile application testing).
• Experience with Snowflake, MongoDB, Terraform Cloud, GitHub, or Databricks.
• Experience working in a regulated environment (e.g., financial services).
• Ability to think like an attacker and anticipate potential threats.

Preferred Certifications

While certifications are not strictly required, possessing one or more of the following certifications is highly desirable:

Cloud Certifications (Foundational or Practitioner Level)

• AWS Certified Cloud Practitioner
• AWS Certified Solutions Architect – Associate
• Google Cloud Certified Professional Cloud Architect
• Microsoft Certified: Azure Solutions Architect Expert
• Microsoft Certified: Azure Administrator Associate
• CompTIA Cloud+

Cybersecurity Certifications (Foundational Level)

• CompTIA Security+
• (ISC)² Certified in Cybersecurity
• GIAC Security Essentials Certification (GSEC)
• ISACA CSX Cybersecurity Fundamentals Certificate

What we can offer you

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 discretionary 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.

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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.

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