Principal Engineer – IT Operations | RPP Squad

Why PayNet / Why Now

• Own 24/7 operations for mission‐critical real‐time payment systems (RPP) where availability, stability, and security are non‐negotiable
• Strengthen the ACI UP platform to improve scalability, performance, and reliability as operational demands increase
• Ensure day‐to‐day operations and change delivery consistently meet payment standards (ISO 20022 & ISO 8583)
• Reduce downtime and operational risk by leading incident response, complex troubleshooting, and faster recovery across core platforms

TL; DR

• Lead operations ownership for RPP and the ACI UP platform in a high‐availability environment
• Drive system resilience through strong engineering across Java, Linux, RDBMS, and automation
• Be the technical authority during incidents, ensuring rapid recovery and stable service
• Raise team capability through mentoring and continuous improvement aligned to business objectives

Why This Role Matters

• Real‐time payment operations require deep technical judgment to keep services stable under pressure
• Operational excellence here directly reduces incident frequency, impact, and recovery time
• Compliance with ISO 20022 & ISO 8583 must be sustained through both BAU operations and implementation change
• Principal‐level leadership is needed to balance BAU, improvements, and high‐stakes troubleshooting in one operating environment

What You Will Actually Do

• Lead and oversee 24/7 operations for RPP, ensuring high availability, stability, and security
• Provide technical leadership for ACI UP, improving scalability, performance, and reliability
• Ensure operational and implementation compliance with ISO 20022 & ISO 8583 standards
• Manage and optimise backend systems across Java, Linux, and RDBMS, including automation via shell scripting
• Lead incident management and complex troubleshooting to minimise downtime and ensure rapid recovery
• Drive continuous improvement and team capability through mentoring and alignment to business objectives

Examples of This Role in Practice

• Leading a high‐severity production incident, coordinating deep troubleshooting and restoring service rapidly
• Identifying a recurring stability issue and implementing automation to prevent repeated operational failures
• Improving platform performance through system‐level analysis and tuning in a high‐availability environment
• Validating that operational changes and implementations remain compliant with ISO 20022 & ISO 8583 requirements
• Coaching engineers through BAU + project delivery pressures while maintaining a stable, secure operating posture

What Will Help You Succeed

Required

• Extensive hands‐on capability in Java, Linux administration (RHEL/Oracle), and shell scripting for operations and automation
• Practical knowledge of payment standards (ISO 20022 & ISO 8583) and how they apply in payment operations
• Proven experience operating Linux systems in a high‐availability, mission‐critical environment, including performance analysis and optimization
• Demonstrated leadership across BAU and project operations, including complex troubleshooting under pressure

Helpful

• Hands‐on experience with the ACI UP platform or similar payment processing systems
• RHCSA / RHCE certification in Linux administration
• Exposure to DevOps and observability tools such as Jenkins, Terraform, Grafana, Prometheus, ELK
• Familiarity with core infrastructure services such as SMTP, LDAP, DNS, Apache, Nginx, HAProxy, WebLogic, JBoss/WildFly
• Advanced performance tuning using tools such as vmstat, iostat, sar, lsof

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