Mainframe Developer

• Mainframe Developer - Pittsburgh, PA
• Location:- Pittsburgh, PA (5 days client office mandatory)
• Overall 10+ years exp
• Domain:- Banking

JD

We are looking for an experienced of Mainframe professional and strong credit card domain expertise and hands-on exposure to Fiserv platforms, preferably VisionPLUS / First Data card processing environments. The ideal candidate will have deep experience in designing, developing, enhancing, and supporting high-volume card processing applications on IBM mainframe, with strong knowledge of the end-to-end credit card lifecycle including authorization, billing, disputes, collections, and settlement.

Required Skills & Qualifications

• 8+ years of experience in Mainframe development/support with strong hands-on expertise in COBOL, JCL, CICS, DB2, and VSAM.
• Strong experience in the credit card / payments domain.
• Prior experience working with Fiserv, preferably on VisionPLUS / First Data card processing platforms.
• Good understanding of card lifecycle processes including account onboarding, transaction processing, authorization, billing, payments, disputes, fraud, and collections.
• Experience with online and batch processing in high-volume transaction environments.
• Strong knowledge of IBM mainframe tools such as TSO/ISPF, File-AID, Endevor/Changeman, SORT utilities, and scheduling tools like Control-M / CA7.
• Experience in production support, incident analysis, defect resolution, and performance tuning.
• Ability to work closely with business stakeholders and convert business requirements into technical design.
• Strong analytical, problem-solving, and communication skills.
• Bachelor s degree in Computer Science, Information Systems, Engineering, or related field.

Key Responsibilities

• Design, develop, enhance, and maintain mainframe applications supporting credit card processing and servicing.
• Work on card management functions such as account setup, authorizations, transactions, billing, statements, payments, disputes, chargebacks, collections, and settlement.
• Support and customize Fiserv / VisionPLUS modules based on business requirements and regulatory needs.
• Analyze functional and technical requirements and translate them into effective mainframe solutions.
• Develop and support batch and online processes using COBOL, JCL, CICS, DB2, and VSAM.
• Perform impact analysis, code reviews, unit testing, system testing, and production support.
• Troubleshoot production issues, optimize performance, and ensure system stability for high-volume transaction processing.
• Collaborate with business analysts, product owners, QA teams, and upstream/downstream system teams for end-to-end delivery.
• Participate in release planning, deployment support, and post-production validation.

Prepare technical documentation, design specifications, and support knowledge transition