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The Linux Production Support Analyst sits within Citi's Security Infrastructure organization and is responsible for maintaining, certifying, and ensuring that Security Infrastructure and Security Applications remain in consistent adherence to MISP (Malware Information Sharing Platform) requirements as regulated by the OCC. This position plays a critical operational role in safeguarding enterprise security compliance by supporting production environments through continuous monitoring, troubleshooting, and vulnerability remediation. The analyst will collaborate closely with highly technical internal teams to reduce risk, deliver secure solutions, and drive automation and standardization of information security controls. This is an opportunity to contribute directly to the resilience and regulatory standing of one of the world's largest financial institutions.
Job Responsibility
Maintain, certify, and ensure Citi's Security Infrastructure and Security Applications adhere consistently to MISP (Malware Information Sharing Platform) requirements as regulated by the OCC
Support daily operations across existing infrastructure platforms and applications, including troubleshooting, monitoring, and remediation
Resolve infrastructure product and application escalations by collaborating with internal, highly technical teams
Query and research security logs and data logs using Splunk to support monitoring and incident investigation
Perform scripting in Bash/Shell to support automation and operational tasks
Maintain, track, and complete assigned tickets within the ticketing system queue in a timely manner
Resolve vulnerabilities and issues detected across applications and infrastructure environments
Analyze source code to identify and mitigate weaknesses and vulnerabilities within the system
Review and validate automated testing results, prioritizing corrective actions based on overall risk ranking
Scan and analyze applications using automated tools and perform manual testing when required
Apply working knowledge of networking protocols, security strategies, and application management to support troubleshooting efforts
Identify and implement opportunities to automate and standardize information security controls
Analyze root causes of issues, assess their impact, and implement required corrective actions to reduce risk
Coordinate with business and technical contacts to direct the development and delivery of secure solutions
Requirements
4+ years of hands-on experience working with Linux systems in a production environment
3+ years of IT Security Production Support experience, specifically within Security Infrastructure or Security Application support
Proficiency in Bash/Shell scripting at a minimum
Experience with Splunk Core or Splunk ES for querying and researching security and data logs
Strong ability to troubleshoot and support multiple applications across a security domain simultaneously
Good working knowledge of networking protocols, security strategies, and application management practices
Good understanding of Big Data or Data Lake platforms and environments
Experience with ticketing and project management tools such as Jira or ServiceNow
Excellent written and verbal communication skills, with the ability to clearly articulate issues and escalations to management
Strong process documentation skills and consistent adherence to domain processes and procedures
Ability to work effectively under pressure and manage time independently in alignment with project timelines
Nice to have
Advanced scripting capability
Linux certifications (e.g., Linux System Administrator)
Bilingual proficiency in Spanish
What we offer
medical, dental & vision coverage
401(k)
life, accident, and disability insurance
wellness programs
planned time off (vacation)
unplanned time off (sick leave)
paid holidays
discretionary and formulaic incentive and retention awards