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Applications Support Senior Analyst

Australia, Sydney Employment contract · Job Posted April 23, 2026
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Job Description

As an Application Support Senior Analyst, you will take a central role in running and maintaining the production environment for Citi's critical Reference Data Applications – high visibility applications forming the backbone of Citi’s operations, serving hundreds of partner systems across Citi’s main businesses – Markets, Services, Banking, and Functions – enabling them to service our clients. You will join a high-performing team focused on building a robust Production Support platform using the latest technologies, AI-driven automation, and reliability techniques. Our mission is to deliver a world-class client experience by digitizing services, eliminating manual work, and ensuring our platforms can scale for growth. In this global role, you will provide support for our enterprise-critical applications, partnering closely with Application Support, Development, Infrastructure, Business, and Operations teams to ensure seamless service delivery.

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
  • Support the planning and execution of system changes, including application releases, infrastructure maintenance, and continuity of business tests
  • Maintain and optimize the production monitoring/observability estate by implementing new features and leveraging analytics
  • 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

Requirements

  • 5+ years in a Production Support role managing enterprise-level applications
  • 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 containerization platforms (OpenShift, Kubernetes)
  • Experience with relational (Oracle, MSSQL) and NoSQL (MongoDB) databases
  • Strong knowledge of messaging solutions (Tibco EMS, MQ, Kafka)
  • Experience working with REST APIs
  • Solid understanding of distributed application architecture, including networks, load balancers, storage, and authentication (AD/LDAP)
  • Excellent written and verbal communication skills, with the ability to articulate complex technical issues to both technical and business audiences

Nice to have

  • Proficiency in a programming language (e.g., Python, Java) for automation
  • Familiarity with prompt engineering techniques for interacting with Generative AI / Large Language Models (LLMs)
  • Experience with observability standards and tools: Open Telemetry, Prometheus, Grafana

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  • Develop and maintain technical support documentation
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