Senior Mainframe PL/I Developer

Senior Mainframe Engineer (Pl/1)

Remote

Contract

Required:

• Hands-on experience developing or maintaining applications written in PL/I / PL1.
• Experience with enterprise or legacy application environments, preferably in banking, payments, credit union, card processing, or financial services.
• Familiarity with batch processing, data migration, and core banking/business transaction processing. Internal tokenization planning identifies PL/I, batch processing, and data migration as important skill areas for the program.
• Experience using source control and structured development workflows; internal PL/I development guidance references Git, feature branch workflow, pull requests, Jenkins builds, compiling, unit testing, and static analysis.
• Ability to read and analyze complex legacy code and identify impacts across related modules.
• Strong debugging, problem-solving, and technical documentation skills.
• Ability to collaborate across architecture, Java/API development, QA, product, and business teams.
• Understanding of secure handling of sensitive data, especially PAN/cardholder-data logic, is strongly preferred.

Desired:

• Symitar / Episys experience.
• Cards, payments, ATM, external loans, or card lifecycle knowledge.
• Experience with tokenization, PAN handling, or PCI-sensitive applications.
• Java integration experience or ability to work with Java/API teams on PL/I-to-service integration. Internal materials describe tokenization work where PL/I may communicate with Java or another component for tokenization services.
• AIX, Putty, shell scripting, PowerOn, Azure DevOps, or Agile delivery experience. These are listed as relevant skillsets in internal tokenization planning.
• Experience with QA automation, regression testing, or working closely with automated test teams.