Sr Mainframe Developer

Sr Mainframe Developer at Net2Source Inc. Sr Mainframe Developer at Net2Source Inc. in Weehawken, New Jersey Posted in 1 day ago.

Type:

full-time

Job Description:

• CLIENT INTERVIEW WILL BE IN-PERSON

• Mainframe

• CICS IS A MANDATORY SKILL

• Job title:

Sr Mainframe Developer Location:

Jersey City, NJ (Onsite)

Term:

Contract Job Description:

Design, develop, test, and maintain mission-critical banking applications using COBOL, CICS, JCL, DB2, and VSAM Build and support CICS online transactions for core banking functions such as account management, fund transfers, and loan processing Write and tune DB2 SQL queries, stored procedures, and perform explain plan analysis for high-volume financial data Create, maintain, and troubleshoot JCL batch jobs supporting end-of-day, end-of-month, and regulatory reporting cycles

• Diagnose and resolve production issues, system failures, and performance bottlenecks in a zero-downtime banking environment Conduct code reviews, enforce coding standards, and mentor junior developers Collaborate with business analysts, architects, and compliance teams across the full SDLC
• from requirements to deployment Support mainframe modernization initiatives including integration with digital banking platforms and REST APIs Ensure all development adheres to banking regulations, audit controls, and security standards (SOX, PCI-DSS, FFIEC) Maintain thorough technical documentation including design specs, runbooks, and change management records

Job Requirements:

10+ years of hands-on IBM mainframe development experience, preferably in banking or financial services Expert-level proficiency in COBOL and CICS transaction programming Strong command of JCL, z/OS utilities (SORT, IDCAMS, IEBGENER), and batch processing Deep knowledge of DB2

• SQL optimization, bind/rebind, and performance tuning for large financial datasets Solid experience with VSAM file structures and access methods
• Familiarity with

REXX/CLIST

scripting for automation

• Understanding of banking domain concepts
• core banking, payments (ACH, SWIFT, Fedwire), GL, and reconciliation Exposure to mainframe-to-distributed integration (MQ, APIs, Web Services) is a plus Knowledge of DevOps for mainframe tools like Zowe, IDz, or DBB is highly desirable Years of experience required: 8-10