Mainframe Developer: Modernization & Data Integration

Capgemini; New Jersey; On-site; USD 61,000 - 104,000; Full time

Benefits offered by this job

PTO

Health insurance

Retirement plan

Life and disability insurance

Employee assistance program

Job summary

Capgemini is seeking a hands-on IBM z/OS mainframe developer in the Jersey City area and other U.S. locations. You will support COBOL, JCL, DB2 and VSAM, ensure high availability, and optimize batch and real-time processing within critical systems.

You will collaborate with modernization, data integration, and cloud teams on mainframe-to-cloud initiatives, support OBIEE and Snowflake data consumers, and participate in deployment and documentation using Confluence and SQL-based tooling.

Qualifications

• Experience with IBM z/OS mainframe applications.
• Strong COBOL/JCL/DB2/VSAM skills required.
• Experience with batch and near-real-time processing.
• Familiarity with data integration and ETL (Informatica, Python).
• Exposure to Java/Spring Boot APIs and Oracle data stores is a plus.

Responsibilities

• Provide hands-on development and support for mainframe apps.
• Analyze and optimize large legacy portfolios and batch processing.
• Collaborate on mainframe-to-cloud modernization initiatives.
• Support OBIEE and Snowflake data consumers.
• Document analyses and deployments using Confluence.

Skills

Mainframe development

COBOL

JCL

DB2

VSAM

Batch processing

Performance tuning

Java/Spring Boot

Python

Tools

Informatica

Python ETL

Oracle DB

OBIEE

Snowflake

Confluence

SQL

Job description

Capgemini is seeking a hands-on IBM z/OS mainframe developer in the Jersey City area and other U.S. locations. You will support COBOL, JCL, DB2 and VSAM, ensure high availability, and optimize batch and real-time processing within critical systems.

You will collaborate with modernization, data integration, and cloud teams on mainframe-to-cloud initiatives, support OBIEE and Snowflake data consumers, and participate in deployment and documentation using Confluence and SQL-based tooling.