Mainframe application development

Key Responsibilities

Design develop and maintain mainframe batch and online applications supporting capital markets and banking workflows

Develop and enhance COBOL programs for business critical processing logic

Build and support CICS online transactions with strong performance and availability SLAs

Create maintain and tune JCL jobs for large scale batch processing and scheduling

Design and optimize DB2 (z/OS) database access SQL queries and indexing strategies

Work with VSAM datasets file definitions and data access patterns

Perform root cause analysis and resolve production defects efficiently

Support audit regulatory and compliance requirements through controlled and traceable changes

Collaborate with business analysts QA teams and operations in Agile delivery models

Participate in code reviews performance tuning and mentoring of junior resources

Core Technical Skills

COBOL (Batch & Online)

CICS transaction processing

JCL (Job Control Language) scheduling restart/recovery performance tuning

DB2 z/OS Application Programming

VSAM (KSDS ESDS RRDS)

Strong understanding of Mainframe architecture and z/OS utilities

Financial Services / Capital Markets Domain Experience

Experience with broker dealer banking or capital markets systems

Knowledge of high volume transaction processing and batch cycles

Understanding of data reconciliation controls and audit trails

Familiarity with regulatory environments and change control processes

Experience supporting 24x7 production systems with strict SLAs

Nice to Have Skills

z/OS Connect or API enablement of mainframe applications

Mainframe modernization exposure (refactoring API enablement or coexistence models)

Tools such as EASYTRIEVE REXX or schedulers (e.g. CA 7)

Experience working in distributed mainframe hybrid architectures

Familiarity with CI/CD practices adapted for mainframe ecosystems

Soft Skills

Strong analytical and problem solving abilities

Ability to translate complex business requirements into technical solutions

Clear communication with business and technical stakeholders

Mentoring and technical leadership mindset