The AS400 Subject Matter Expert supports banking applications, resolves production issues, manages deployments, and ensures system stability.
We are hiring an experienced AS400 SME with strong expertise in IBM AS400 / iSeries systems, RPG programming, and Banking & Payment applications.
The ideal candidate will act as a Technical SME / L3 Production Support expert, responsible for supporting mission-critical banking systems, resolving production issues, fixing defects, handling deployments, and ensuring stability of payment-related applications.
This role requires a senior professional who can work across application support, troubleshooting, bug fixing, and platform transition / migration activities in a high-availability banking environment.
Key Responsibilities- Act as the AS400 Subject Matter Expert (SME) for banking and payment applications
- Provide L3 Production Support for critical business applications running on AS400 / iSeries
- Analyze and resolve production incidents, defects, bugs, and system issues
- Perform root cause analysis and implement permanent fixes for recurring production problems
- Support banking payment systems and ensure smooth transaction processing
- Troubleshoot and resolve issues related to batch jobs, interfaces, system logs, and application failures
- Support application deployments, release activities, and post-deployment validations
- Work on customer migration / platform transition initiatives, ensuring continuity and system stability
- Collaborate with business users, operations teams, development teams, and infrastructure teams
- Provide technical guidance and support during critical incidents and production outages
- Maintain support documentation, knowledge articles, and operational runbooks
- Ensure adherence to incident management, change management, and release management processes
RequirementsRequired Skills & ExperienceTechnical Skills
- Strong hands-on experience with AS400 / IBM iSeries
- Strong programming experience in:
- RPG / RPGLE
- CL
- DB2
- Experience in Application Support / Production Support
- Strong knowledge of:
- Bug Fixing / Defect Resolution
- Incident Management
- Log Analysis
- Deployment & Release Support
- Batch Job Monitoring
- Root Cause Analysis
- Good understanding of legacy banking platforms and transaction systems
- Strong experience in Banking
- Good understanding of Payments systems
- Exposure to:
- Payment transaction processing
- Platform migration / transition
- Customer migration from one system to another
- High-volume transactional environments
Top Skills
Cl
Db2
Ibm As400
Iseries
Rpg Programming
Unison Consulting Singapore Office
1 Changi Business Park Crescent, , Plaza 8 #03-06 Tower A, Singapore, , Singapore, 486025
Unison Consulting Singapore Office
#12-00, 63 Market Street, Bank of Singapore Center, Singapore, , Singapore, 048942
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