Linux Production Support Analyst - Application & Infrastructure Security , AVP

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.

The position responsible for leading efforts to prevent, monitor and respond to information/data breaches and cyber-attacks. The overall objective of this role is to ensure the execution of Information Security directives and activities in alignment with Citi's data security policy.
 

Responsibilities:

• Identify opportunities to automate and standardize information security controls.

• Resolve any vulnerabilities or issues detected in an application or infrastructure.

• Analyze source code to mitigate identified weaknesses and vulnerabilities within the system.

• Review and validate automated testing results and prioritize actions that resolve issues based on overall risk.

• Scan and analyze applications with automated tools and perform manual testing if necessary.

• Working knowledge of Linux, networking, and application management on as big data tools for troubleshooting, and security strategies.

• Reduce risk by analyzing the root cause of issues, their impact, and required corrective actions.

• Direct the development and delivery of secure solutions by coordinating with business and technical contacts.

• Appropriately assess risk when business decisions are made, demonstrating consideration for the firm's reputation and safeguarding Citi, its clients, and assets, by driving compliance with applicable laws, rules, and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing, and reporting control issues with transparency.

Job Skills:

• Must be a self-starter and be able to manage their time against deliverables.

• Linux in general (SA Skills is desired/plus)

• Scripting

• Troubleshooting (must)

• Monitoring (must)

• Previous or current IT Operations experience

• Be able to work under pressure and clearly articulate to management current problems, escalation process, etc.

• Follow domain process and procedures.

• Resolve product / application escalations.

• Ability to troubleshoot and support multiple applications in our domain.

• Maintain track and complete assigned tickets (Jira, ServiceNow, etc.)

• Understand Big data platforms and previous experience with Splunk Core or Splunk ES is a plus.

• Excellent communication and process documentation

Qualifications:

• 3-5 years of relevant experience

• Advanced proficiency with Microsoft Office tools and software

• Consistently demonstrates clear and concise written and verbal communication.

• Proven analytical skills.

Education:

• Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

About Citi:

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.

The Role:

The Linux Production Support Analyst - Application & Infrastructure Security, AVP (C12) is an intermediate level position responsible to help maintain, certify, and ensure that Citi's Security Infrastructure and Security Applications remain in consistent adherence to MISP (Malware Information Sharing Platform) as regulated and required by the OCC. This is a production support role and will require close collaboration with internal, highly technical teams.

Responsibilities

• Support operations around the existing infrastructure platforms and/or applications including troubleshooting, monitoring, and remediation
• Resolve infrastructure product/application escalations by collaborating with internal, highly technical teams
• Splunk basic skills including research, querying data (e.g., security logs, data logs, etc.)
• Perform scripting in Bash/Shell
• Maintain, track, and complete assigned tickets in the ticketing system queue

• Resolve any vulnerabilities or issues detected in an application or infrastructure
• Analyze source code to mitigate identified weaknesses and vulnerabilities within the system
• Review and validate automated testing results and prioritize actions to resolve issues based on overall risk in ranked order
• Scan and analyze applications with automated tools and perform manual testing if necessary
• Good working knowledge of networking protocols, security strategies, and application management for troubleshooting
• Identify opportunities to automate and standardize information security controls when possible
• Reduce risk by analyzing the root cause of issues, their impact, and required corrective actions.
• Direct the development and delivery of secure solutions by coordinating with business and technical contacts

Qualifications

• 4+ years' experience working hands-on with Linux
• 3+ years' IT Security Production Support experience in Security Infrastructure or Security Application support
• Basic Bash/Shell Scripting at minimum
• Prior experience with Splunk Core or Splunk ES is a big plus
• Must be a self-starter able to effectively manage time in alignment to timelines
• Ability to work well under pressure and clearly articulate to management regarding any arising problems, escalations, etc.
• Consistent adherence to domain process and procedures
• Good understanding of Big Data/Data Lake platforms or environments
• Ability to troubleshoot and support multiple applications within the domain
• Experience with Jira or ServiceNow is a plus
• Excellent communication and process documentation skills
• Bilingual Spanish is a plus

Education

• Bachelor’s degree/University degree or equivalent experience
• Linux certifications (e.g., Linux SA) are a plus

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

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Job Family Group:

Technology

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Job Family:

Information Security

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Time Type:

Full time

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Primary Location:

Jacksonville Florida United States

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Primary Location Full Time Salary Range:

$87,280.00 - $130,920.00

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 citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

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

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Anticipated Posting Close Date:

Aug 27, 2025

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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.

 

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.