Mainframe Security Analyst, Officer

Overview of the Role

Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.

As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and in our clients’ best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Enterprise Operations & Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital architecture and ensuring our platforms provide a first-class customer experience. We reimagine client and partner experiences to deliver excellence through secure, reliable, and efficient services.

Our commitment to diversity includes a workforce that represents the clients we serve from all walks of life, backgrounds, and origins. We foster an environment where the best people want to work. We value and demand respect for others, promote individuals based on merit, and ensure opportunities for personal development are widely available to all. Ideal candidates are innovators with well-rounded backgrounds who bring their authentic selves to work and complement our culture of delivering results with pride. If you are a problem solver who seeks passion in your work, come join us. We’ll enable growth and progress together.

We are seeking a highly motivated Information Security Analyst specialized in mainframe security to join our Global Compliance Monitoring (GCM) team. This role will play a crucial part in ensuring the security and compliance of our enterprise mainframe systems, supporting automation efforts, and driving continuous improvement.

Responsibilities :

• Security Administration : Manage mainframe user access, security profiles, and data access controls (, RACF, TopSecret). Implement and maintain security policies and procedures. Configure and monitor security software and tools.
• Compliance Monitoring & Reporting : Monitor mainframe systems for security incidents and compliance violations. Conduct security assessments and audits. Generate reports and communicate findings to stakeholders. Ensure compliance with industry regulations (PCI DSS, SOX, etc.) and internal standards.
• Risk Management & Remediation : Identify, assess, and evaluate security vulnerabilities and risks. Propose and implement remediation plans to address weaknesses and compliance gaps.
• Collaboration & Support : Collaborate with IT teams to resolve security issues and integrate security best practices. Act as a subject matter expert on mainframe security, providing technical support and guidance. Contribute to security awareness training.
• Automation & Continuous Improvement : Support automation efforts and standardize enterprise reports. Develop and maintain security documentation. Stay up-to-date on mainframe security threats and trends, recommending improvements to the security posture.
• Ownership & Leadership : Co-lead the GCM Enterprise Mainframe workstream, ensuring controls are compliant, timely, and aligned with data security policy. Actively participate in discussions, challenge ideas constructively, and collaborate on solutions. Work collaboratively across global and regional teams.

Qualifications :

Job Family Group : Technology

Job Family : Information Security

Time Type : Full time

Primary Location :

San Antonio Texas United States

Primary Location Full Time Salary Range :

53, - $74,

In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including : medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit Available offerings may vary by jurisdiction, job level, and date of hire.

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

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

Anticipated Posting Close Date :

Aug 28, 2025