Software Engineer (AS400 / RPG / Payments)

Optimum Solutions Pte Ltd; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

Optimum Solutions Pte Ltd in Singapore seeks a Support Analyst to manage stability, maintenance, and defect remediation of enterprise payment and core banking applications. You will deliver L2/L3 production support, perform RCA, and support end-to-end testing and production releases in a high-availability environment.

Key requirements include a Bachelor's degree in Computer Science, 3+ years in development and production support, and hands-on IBM AS400 / iSeries experience with RPG/LE, CL/LE,

Qualifications

• Bachelor's degree in Computer Science or equivalent.
• 3+ years of experience in development and production support.
• Hands-on proficiency in IBM AS400 / iSeries environment.
• Strong programming and query skills in RPG/LE, CL/LE, COBOL400, SQL, and Query400.
• Experience with change management and version control tools (e.g., ALDON, IBM RDi).
• Practical experience with monitoring and scheduling tools (e.g., Control-M, Splunk, BMC Helix).
• Domain knowledge: exposure to banking payments and settlement workflows including SWIFT messaging, cross-border remittances, or regional clearing networks.

Responsibilities

• Perform structured root cause analysis on application defects, provide technical remediation, and assist L2 teams with incident recovery and escalations.
• Conduct code debugging, minor fixes, and support testing across SIT, UAT, and production deployments during scheduled maintenance windows.
• Proactively identify performance bottlenecks to enhance application throughput, stability, and high-volume transaction processing.
• Comply with SDM policies, perform risk and impact assessments for all deployments, and maintain accurate technical documentation.
• Communicate incident status, root cause findings, and release notes clearly to business users, internal support units, and external vendors.

Skills

AS400/iSeries

RPG/LE

CL/LE

COBOL400

SQL

Query400

ALDON

IBMRDi

Control-M

Splunk

BMC Helix

Banking payments domain

Education

Bachelor's degree in Computer Science or equivalent

Tools

ALDON

IBM RDi

Job description

We are seeking a Support Analyst to manage the stability, maintenance, and defect remediation of our enterprise payment and core banking applications. You will deliver L2/L3 production support, perform root cause analysis (RCA), and support end-to-end testing and production releases in a high-availability environment.

Key Responsibilities

• Perform structured root cause analysis on application defects, provide technical remediation, and assist L2 teams with incident recovery and escalations.
• Conduct code debugging, minor fixes, and support testing across SIT, UAT, and production deployments during scheduled maintenance windows.
• Proactively identify performance bottlenecks to enhance application throughput, stability, and high-volume transaction processing.
• Comply with SDM policies, perform risk and impact assessments for all deployments, and maintain accurate technical documentation.
• Communicate incident status, root cause findings, and release notes clearly to business users, internal support units, and external vendors.

Requirements

• Bachelor Degree in Computer Science or equivalent
• 3 or more years of experience in development and production support
• Demonstrated hands-on proficiency in the IBM AS400 / iSeries environment.
• Strong programming and query skills in RPG/LE, CL/LE, COBOL400, SQL, and Query400.
• Experience with change management and version control tools (e.g., ALDON, IBM RDi).
• Practical experience with monitoring and scheduling tools (e.g., Control-M, Splunk, BMC Helix).
• Domain Knowledge: Exposure to banking payments and settlement workflows, including SWIFT messaging (MT/MX, ISO 20022), cross-border remittances, or regional clearing networks (e.g., MEPS+, RTGS, FAST, RENTAS, CNAPS).