Role OverviewDesign, build, and support mission-critical mainframe applications powering high-volume core banking transactions. Drive reliability, performance, and integration of legacy systems within a modern, API-driven enterprise ecosystem.
Key Responsibilities- Develop & enhance COBOL/CICS/DB2/JCL applications for core banking, payments, settlements, and reporting
- Maintain 24x7 production systems, ensuring stability in high-throughput environments
- Optimize DB2 performance (complex queries, indexing, stored procedures) to improve response time and scalability
- Troubleshoot production issues using Abend-AID, XPEDITER; perform root cause analysis and permanent fixes
- Automate batch pipelines using JCL and REXX; manage batch recovery and restart strategies
- Collaborate with distributed teams to enable API-led integration and modernization initiatives
- Participate in Agile ceremonies, conduct code reviews, and mentor junior engineers
Mandatory Technical Skills- Core: COBOL, CICS, DB2, JCL (hands-on development)
- DB2 Expertise: Query optimization, stored procedures, performance tuning
- Batch Processing: Job control, scheduling, recovery handling
- Debugging: Abend-AID, XPEDITER
- Systems: High-volume transaction processing, regulatory reporting
Tools & Ecosystem- Scheduling: Control-M, CA7
- Release Mgmt: Endevor, ChangeMan
- Data Tools: File-AID
Domain Expertise (Critical)- Banking/Financial Services (payments lifecycle, settlements)
- Regulatory reporting systems
- High-availability, mission-critical environments
Important Capabilities- Production support & incident management
- Root cause analysis and defect resolution
- Performance tuning & system optimization
- Batch failure recovery strategies
Modernization & Integration- Integrate mainframe applications with API/microservices-based systems
- Exposure to cloud or hybrid modernization programs
Automation- REXX scripting for operational efficiency
- JCL-based workflow automation
Soft Skills- Strong stakeholder communication
- Agile collaboration mindset
- Mentoring and knowledge sharing
Experience- 7–10 years in mainframe development
- Proven experience in large-scale banking systems handling high transaction volumes
Nice-to-Have- Exposure to z/OS Connect, MQ, REST APIs
- Knowledge of DevOps practices in mainframe environments
