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Citi Logo Citi · IT - Administration

Applications Support Sr Analyst

Costa Rica, Heredia · Job Posted May 26, 2026
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Job Responsibility

  • Provide technical and business support for Citi users, addressing daily queries and issues, driving stability, efficiency, and risk management improvements
  • Provide resolution to critical incidents including prioritization, timely escalation and communication to key stakeholders, driving immediate fixes, as well as comprehensive post-mortems and root cause analysis of all problems for recurrence prevention
  • Support the planning and execution of system changes, including application releases, infrastructure maintenance, and continuity of business tests, ensuring production stability is maintained
  • Maintain and optimize the production monitoring/observability estate by implementing new features and leveraging analytics to enhance system visibility and proactive alerting
  • Collaborate closely with development teams to recommend and implement improvements to application stability, performance, and recoverability
  • Identify opportunities and implement automation tools to reduce operational toil, improve efficiency, and mitigate risk
  • Use available automation tool to perform COB test few times in a year to enhance the application resiliency
  • Proactively develop, maintain, and continuously improve comprehensive technical support documentation, including runbooks, knowledge base articles, troubleshooting guides, system architecture diagrams, and application recovery procedures
  • Proactively and continuously assesses the implications of new and existing technology applications within the current operational environment, serving as a critical gatekeeper for production stability and security
  • Operates with significant independence and exercises sound, autonomous judgment in complex, high-stakes production environments, requiring minimal direct supervision
  • Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets

Requirements

  • 5+ years experience in an Application Support role
  • Deep expertise in Unix/Linux and advanced Shell scripting
  • Proficiency with enterprise monitoring tools (e.g., ITRS Geneos, AppDynamics) and log aggregation platforms (e.g., Splunk, ELK)
  • Experience with some programming languages and willingness/ability to learn
  • Experience with containerization platforms (OpenShift, Kubernetes)
  • Experience with relational (Oracle, MSSQL) and NoSQL (MongoDB) databases
  • Strong knowledge of messaging solutions (Tibco EMS, MQ, Kafka)
  • Advanced execution capabilities and ability to adjust quickly to changes and re-prioritization
  • Effective written and verbal communications including ability to explain technical issues in simple terms that non-IT staff can understand
  • Demonstrated analytical skills
  • Issue tracking and reporting using tools
  • Knowledge/ experience of problem Management Tools
  • Effectively share information with other support team members and with other technology teams
  • Ability to plan and organize workload
  • Ability to communicate appropriately to relevant stakeholder
  • Proven expertise in supporting high-volume, mission-critical applications that process, manage, and distribute financial data related to securities, pricing, and rates
  • Bachelor's/University degree or equivalent experience
  • Fluent English
  • Linux
  • Unix
  • Oracle
  • Graphana
  • Snow
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