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Senior Mainframe Developer

Luxoft

Salary not specified
Sep 16, 2025
Oklahoma City, OK, US
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Migrate a legacy system written in HLASM (High-Level Assembler) from the mainframe to a cloud-based Java environment for one of the largest banks in the USA.

Requirements

  • Proficiency in COBOL development and JCL (5+ years).
  • Strong debugging, performance tuning, and problem-solving skills.
  • Experience with CICS transactions and DB2 database programming.
  • Solid understanding of mainframe batch and online processing.
  • Experience with IMS, VSAM, or HLASM.
  • Familiarity with large-scale system migrations and modernization projects.
  • Understanding of integration between mainframe and cloud-based systems.

Responsibilities

  • Analyze, understand, and enhance existing mainframe codebase (COBOL, JCL, CICS, DB2, IMS).
  • Extract and transform business logic from mainframe systems for migration to modern architecture.
  • Troubleshoot, debug, and resolve issues within mainframe applications during migration.
  • Collaborate with Java and client teams to ensure smooth transition and accurate functionality replication.
  • Provide knowledge transfer and documentation of mainframe components and processes.

Other

  • Mandatory work from the office 5 days per week.
  • Experience working in distributed, global teams with US customers.
  • Excellent communication skills for collaboration with client teams.
  • Prior experience in banking or financial services industry.
  • English: B2 Upper Intermediate