Senior Mainframe Developer – COBOL, DB2, CICS

Valiant Technologies LLC

Edison (NJ)

On-site

USD 110,000 - 150,000

Full time

31 hours ago

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Job summary

Valiant Technologies LLC hires a skilled Mainframe Developer to design, develop, and maintain enterprise COBOL applications on IBM mainframe systems. You will work with JCL, DB2, CICS, and VSAM, ensuring robust batch processing and online transaction handling.

Collaborate with analysts, QA, and architects in an Agile environment to modernize legacy systems, optimize performance, and deliver reliable production solutions. Experience with Endevor/Changeman or Git is a plus.

Qualifications

Proficient in COBOL/COBOL II with experience in enterprise systems.
Strong knowledge of JCL and batch processing workflows.
Experience with DB2 including SQL, stored procedures, and performance tuning.
Hands-on experience with CICS online transactions and screen processing.
Familiarity with VSAM datasets (KSDS/ESDS/RRDS) and TSO/ISPF.
Experience performing code reviews, testing, and debugging on mainframe apps.
Ability to work in Agile teams and collaborate with BA/QA/Architects.

Responsibilities

Design, develop, enhance, and maintain enterprise applications using IBM Mainframe technologies.
Develop and maintain COBOL programs to support complex business requirements.
Create, modify, and execute JCL scripts for batch processing and job scheduling.
Work with DB2 databases, including SQL queries and performance tuning.
Develop and maintain CICS online transactions and screen processing.
Work with VSAM datasets and mainframe utilities to optimize performance.
Analyze legacy apps and implement system enhancements; support deployments and releases.