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API Reliability Engineer at Citi

Company: Citigroup Inc.

Location: mississauga, London

Posted: May 29, 2026

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Position Details

Citi is seeking an experienced API Reliability Engineer dedicated to enhancing API performance and reliability in a fast-paced environment. This role places emphasis on proactive monitoring and incident management to ensure stellar client experiences.

As an API Reliability Engineer, you will take ownership of high-availability API systems, utilizing your deep technical skills in Java and AWS to foster continuous improvement. This hands-on role requires collaboration with cross-disciplinary teams to refine operational strategies and automate monitoring solutions.

Key Responsibilities:
• Manage operations of large-scale distributed API ecosystems
• Implement monitoring solutions to ensure system health
• Analyze and optimize API performance metrics
• Lead post-incident reviews and recommend improvements
• Engage in automation for operational tasks and systems

Requirements:
• Extensive support experience with Java ...