Senior Production Support Engineer Lead, Citi

Citi

Location:
Poland, Warsaw

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

We are seeking a proactive and technically skilled Production Support Engineer to join our global support team. The ideal candidate will have hands-on experience with OpenShift (OSE), APIs, and Splunk, and will be responsible for ensuring high availability and stability of critical business applications. This role requires a strong sense of ownership, rapid incident response capabilities, and the ability to troubleshoot across complex, distributed environments.

Job Responsibility:

Provide L2/L3 production support for business-critical applications hosted on OpenShift
Troubleshoot and resolve application and infrastructure issues, ensuring minimal impact to end users
Monitor system health using Splunk dashboards and alerts
proactively identify and address anomalies
Collaborate with development and DevOps teams to triage and resolve API-related performance or connectivity issues
Write and maintain knowledge base articles, runbooks, and post-incident reports (RCA)
Participate in on-call rotation and major incident management
Automate monitoring, alerting, and operational tasks to improve reliability and efficiency
Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behaviour, conduct and business practices, and escalating, managing and reporting control issues with transparency, as well as effectively supervise the activity of others and create accountability with those who fail to maintain these standards.

Requirements:

Strong experience in Red Hat OpenShift (OSE) environments
Proficient in supporting and debugging RESTful APIs, including authentication, performance, and error handling
Expertise in Splunk: creating dashboards, alerts, and performing deep log analysis
Strong scripting skills (e.g., Bash, Python, or PowerShell) for automation and diagnostics
Working knowledge of ITIL practices and incident/problem management processes
Familiarity with CI/CD pipelines (Jenkins, GitLab CI)
Experience with cloud platforms (AWS, Azure, or GCP)
Exposure to application performance monitoring tools (e.g., Dynatrace, AppDynamics, ELK, Splunk)
Understanding of SRE principles
Use of Automation tools such as Automation Anywhere, Run Book Automation
Bachelor’s degree in computer science, Information Systems, or a related field (or equivalent experience)
Ability to plan and organize workload and consistently demonstrates clear and concise written and verbal communication skills.

What we offer:

Private Medical Care Program
Life Insurance Program
Pension Plan contribution (PPE Program)
Employee Assistance Program
Paid Parental Leave Program (maternity and paternity leave)
Sport Card
Holidays Allowance
Sport and team recreation activities
Special offers and discounts for employees
Access to an array of learning and development resources
A discretional annual performance related bonus.

Additional Information:

Job Posted:
June 25, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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Senior Production Support Engineer Lead